This draft European Standard defines a gas chromatographic analysis for the determination of the composition of fuel gases, as used in refinery heating gas. These results are used to calculate the carbon content and the lower calorific value.
With this gas chromatographic analysis, an overall of 23 refinery heating gas components are determined in concentrations as typically found in refineries (see Table 1 for further details).
Water is not analyzed. The results represent dry gases.
NOTE 1   Depending on the equipment used, there is a possibility to determine higher hydrocarbons as well.
NOTE 2   For the purposes of this draft European Standard, the terms "% (V/V)" is used to represent the volume fraction (φ).
IMPORTANT - This standard does not purport to address all of the safety problems associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations.

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This document establishes a valid method for separation of chemically heterogeneous polyethylene
oxide (PEO) mixtures and for the determination the number and content of the chemically heterogeneous
species in the overall sample.
The method presented in this document serves as a technical guideline and enables laboratories to
learn the principle of “critical chromatography” on a validated system.
This method presented in this document with its stated system parameters is not applicable for other
polymer classes, due to the diversity of the interactions between the polymer/mobile phase/stationary
phase and the number of separation systems that are therefore available.
The evaluation of the interlaboratory testing has shown that many error sources relate to the technique
of liquid chromatography in general. Possible error sources are described in Annex A.
Details on the evaluation of the interlaboratory testing are given in Annex B.
Elugrams of the participants (excerpts) are given in Annex C.
Investigations of the long-term stability of the test mixture are given in Annex D

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This analytical procedure specifies a reverse phase high performance liquid chromatographic with UV detection (RP-HPLC-UV) method for the simultaneous determination of four authorized carotenoids in fish compound feed, namely astaxanthin (AXN), canthaxanthin (CXN), adonirubin (ADR) and astaxanthin dimethyldisuccinate (AXN DMDS), and of six authorized carotenoids in poultry feed, namely canthaxanthin (CXN); capsanthin (CSN), ethyl ester of beta-apo-8'-carotenoic acid (BACARE), citranaxanthin (CIXN), lutein (LUT) and zeaxanthin (ZEA) at levels ranging from ca. 2 to ca. 4 500 mg/kg (depending on the carotenoid). Beta-carotene (BCAR), authorized in compound feed for all animal species, was also added to the scope. The analytical procedure is fit for the purpose of quantitation of declared carotenoids and labelling confirmation. The procedure applies to natural and synthetic feed additives.
Xanthophyll esters like those of lutein, zeaxanthin and capsanthin that might be present in feed materials are not authorized feed additives and therefore not part of the scope of this method.

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This International Standard specifies the measurement of explosive and related nitrocompounds
compounds using liquid chromatography–tandem mass spectrometry (LC-MS/MS) in soil and soilmaterials. This method is applicable to 12 compounds (1,3-DNB, 1,3,5-TNB, 2,4-DNT, 2,6-DNT, 2,4,6-TNT, 4-A-2,6-DNT, 2-A-4,6-DNT, Tetryl, Hexyl, RDX, HMX, PETN) listed in ISO 11916-1(soil, HPLC/UV method) except nitrobenzene, 2-nitortoluene, 3-nitrotoluene and 4-nitrotoluene. In particular,this method is effective for the analysis of PETN, 1,3,5-TNB and tetryl which showed poor interlaboratory trial results with ISO 11916-1. Under the conditions specified in this document, concentrations as low as 0,005 mg/kg to 0,014 mg/kg-dry matter can be determined, depending on the substance.
Purpose and justification of the proposal*
Currently two ISO standards exist for the analysis of explosives and related compounds in soil: ISO 11916-1(HPLC/UV method), ISO 11916-2(GC-ECD or MS method). According to the results of interlaboratory trial with ISO 11916-1, it showed some problematic aspects to analyze PETN, 1,3,5-TNB and tetryl. In case of ISO 11916-2, it also gave poor inter-laboratory trial results for 1,3,5-TNB. Therefore, it is necessary to develop new method effectively applicable to the determination of PETN, 1,3,5-TNB and tetryl.
In addition to this, lower risk-based PRGs (Preliminary Remediation Goal), new regulatory concerns, and change of land use have created the atmosphere to apply more sensitive and selective instruments to determine explosive and related compounds. From the view of these aspects, liquid chromatography–tandem mass spectrometry (LC-MS/MS) is one of alternative methods for these purposes. LC-MS/MS method provides 10-20 times or much lower detection limit than that of HPLC/UV method and is recommendable to determine PETN, 1,3,5-TNB and tetryl.
Also LC-MS/MS method is getting more familiar in ISO standard development (e.g. ISO/CD22104 Water quality--Microcystins, ISO/NP21677 Water quality--HBCD, ISO/CD21675 Water quality--PFAS).
Consider the following: Is there a verified market need for the proposal? What problem does this
standard solve? What value will the document bring to end-users? See Annex C of the ISO/IEC
Directives part 1 for more information. See the following guidance on justification statements on ISO Connect:
https://connect.iso.org/pages/viewpage.action?pageId=27590861

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The proposed standard aims at describing a method to analyze 57 chemically defined suspected allergens (some of them existing under several isomeric forms or as mixtures) in ready to inject fragrance and raw material samples according to the SCCS opinion. (SCCS/1459/11).
This new analytical method uses gas chromatography and mass spectrometry (GC-MS) to detect and to quantify the 57 fragrance substances and their relevant isomers at a concentration higher than 0.0002% (2 mg/kg) in ready to inject fragrance and raw material samples. Making this method available will allow the screening of (complex) ready to inject fragrance and raw material samples to be undertaken for the presence of any of those chemically defined suspected allergens. It will therefore be a basis for the calculation of adequate information to the cosmetics industry in order to provide adequate consumer information. The present analytical method uses GC-MS by combination of two GC columns of different polarity with a dedicated methodology for quantitation.

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This part of IEC 62321 provides strategies of sampling along with the mechanical preparation
of samples from electrotechnical products. These samples can be used for analytical testing to
determine the levels of certain substances as described in the test methods in other parts of
the IEC 62321 series. Restrictions for substances will vary between geographic regions and
can be updated on a regular basis. This document describes a generic process for obtaining
and preparing samples prior to the determination of any substance of concern.
This document does not provide:
– full guidance on each and every product that could be classified as electrotechnical product.
Since there is a huge variety of electrotechnical parts, with various structures and
compositions, along with the continuous innovations in the industry, it is unrealistic to
attempt to provide procedures for the disjointment of every type of part;
– guidance regarding other routes to gather additional information on certain substances in a
product, although the information collected has relevance to the sampling strategies in this
document;
– safe disassembly and mechanical disjointment instructions related to electrotechnical
products (e.g. mercury-containing switches) and the recycling industry (e.g. how to handle
CRTs or the safe removal of batteries). See IEC 62554 [1] 1 for the disjointment and
mechanical sample preparation of mercury-containing fluorescent lamps;
– sampling procedures for packaging and packaging materials;
– analytical procedures to measure the levels of certain substances. This is covered by other
standards (e.g. other parts of the IEC 62321 series), which are referred to as "test
standards" in this document;
– guidelines for assessment of compliance.
This document has the status of a horizontal standard in accordance with IEC Guide 108 [2].

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This part of IEC 62321 specifies the screening analysis of polybrominated biphenyls (PBBs), polybrominated diphenyl ethers (PBDEs), di-isobutyl phthalate (DIBP), di-n-butyl phthalate (DBP), benzylbutyl phthalate (BBP), di-(2-ethylhexyl) phthalate (DEHP), di-n-octyl phthalate (DNOP), di-isononyl phthalate (DINP), and di-isodecyl phthalate (DIDP) in polymers of electrotechnical products using the analytical technique of gas chromatography-mass spectrometry using a pyrolyser/thermal desorption accessory (Py/TD-GC-MS). This test method has been evaluated through the analysis of PP (polypropylene), PS (polystyrene), and PVC (polyvinyl chloride) materials containing deca-BDE between 100 mg/kg and 1 000 mg/kg and individual phthalates between 100 mg/kg to 4 000 mg/kg as depicted in Annex J. Use of the methods described in this document for other polymer types, PBBs (mono-deca), PBDEs (mono-deca) and phthalates or concentration ranges other than those specified above has not been specifically evaluated. This document has the status of a horizontal standard in accordance with IEC Guide 108 [1]1.

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This part of IEC 62321 specifies two techniques for the determination of
hexabromocyclododecane (HBCDD) in polymers of electrotechnical products.
The gas chromatography-mass spectrometry (GC-MS) test method is described in the
normative part of this document. The GC-MS method is suitable for the determination of
hexabromocyclododecane (HBCDD).
A method using high-pressure liquid chromatography-mass spectrometry (HPLC-MS) is given
in informative Annex A.
These test methods have been evaluated for use with EPS (expanded polystyrene foam),
XPS (extruded polystyrene foam) and ABS (acrylonitrile butadiene styrene) within the
concentration ranges as specified in Table 1. The use of this method for other types of materials
or concentration ranges outside those specified below has not been evaluated.
This document has the status of a horizontal standard in accordance with IEC Guide 108.

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This European Standard describes a method for the determination of the boiling range distribution of petroleum products by capillary gas chromatography using flame ionization detection. The standard is applicable to stabilized crude oils and for the boiling range distribution and the recovery up to and including n-nonane. A stabilized crude oil is defined as having a Reid Vapour Pressure equivalent to or less than 82,7 kPa as determined by IP 481 [3].
NOTE   For the purposes of this European Standard, the terms “% (m/m)” and “% (V/V)” are used to represent respectively the mass fraction, ω, and the volume fraction, φ.
WARNING —The use of this European Standard may involve hazardous materials, operations and equipment. This European Standard does not purport to address all of the safety problems associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and to determine the applicability of regulatory limitations prior to use.

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ISO 15192:2010 specifies a method for the determination of Cr(VI) in solid waste material and soil by alkaline digestion and ion chromatography with spectrophotometric detection. This method can be used to determine Cr(VI) mass fractions in solids greater than 0,1 mg/kg.

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This document specifies the gas chromatographic (GC) method for the determination of saturated,
olefinic and aromatic hydrocarbons in automotive motor gasoline and ethanol (E85) automotive fuel.
Additionally, the benzene and toluene content, oxygenated compounds and the total oxygen content can
be determined.
NOTE 1 For the purposes of this document, the terms % (m/m) and % (V/V) are used to represent respectively
the mass fraction, w, and the volume fraction, φ.
This document defines two procedures, A and B.
Procedure A is applicable to automotive motor gasoline with total aromatics of 19,32 % (V/V) up to
46,29 % (V/V); total olefins from 0,40 % (V/V) up to 26,85 % (V/V); oxygenates from 0,61 % (V/V) up to
9,85 % (V/V); oxygen content from 1,50 % (m/m) to 12,32 % (m/m); benzene content from 0,38 % (V/V)
up to 1,98 % (V/V) and toluene content from 5,85 % (V/V) up to 31,65 % (V/V).
The method has also been tested for individual oxygenates. A precision has been determined for
a total volume of methanol from 1,05 % (V/V) up to 16,96 % (V/V); a total volume of ethanol from
0,50 % (V/V) up to 17,86 % (V/V); a total volume of MTBE from 0,99 % (V/V) up to 15,70 % (V/V), a total
volume of ETBE from 0,99 % (V/V) up to 15,49 % (V/V), a total volume of TAME from 0,99 % (V/V) up to
5,92 % (V/V), and a total volume of TAEE from 0,98 % (V/V) up to 15,59 % (V/V).
Although this test method can be used to determine higher-olefin contents of up to 50 % (V/V), the
precision for olefins was tested only in the range from 0,40 % (V/V) to 26,85 % (V/V).
Although specifically developed for the analysis of automotive motor gasoline that contains oxygenates,
this test method can also be applied to other hydrocarbon streams having similar boiling ranges, such
as naphthas and reformates.
NOTE 2 For Procedure A, applicability of this document has also been verified for the determination of
n-propanol, acetone, and di-isopropyl ether (DIPE). However, no precision data have been determined for these
compounds.
Procedure B describes the analysis of oxygenated groups (ethanol, methanol, ethers, C3 – C5 alcohols)
in ethanol (E85) automotive fuel containing ethanol between 50 % (V/V) and 85 % (V/V). The gasoline
is diluted with an oxygenate-free component to lower the ethanol content to a value below 20 % (V/V)
before the analysis by GC.
The sample can be fully analysed including hydrocarbons. Precision data for the diluted sample are
only available for the oxygenated groups.
NOTE 3 For Procedure B, the precision can be used for an ethanol fraction from about 50 % up to 85 % (V/V).
For the ether fraction, the precision as specified in Table 6 can be used for samples containing at least 11 % (V/V)
of ethers. For the higher alcohol fraction, too few data were obtained to derive a full precision statement and the
data presented in Table 6 are therefore only indicative.
NOTE 4 An overlap between C9 and C10 aromatics can occur. However, the total is accurate. Isopropyl benzene
is resolved from the C8 aromatics and is included with the other C9 aromatics.

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This International Standard specifies a chromatographic method to determine the amount of middle-chain chlorinated paraffins (MCCP) C14-C17 in processed and unprocessed leather.

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This document specifies a chromatographic method to determine the amount of short-chain chlorinated
paraffins (SCCPs) C10 to C13 in processed and unprocessed leathers.

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This document specifies a chromatographic method to determine the amount of short-chain chlorinated paraffins (SCCPs: C10-C13) and middle-chain chlorinated paraffins (MCCPs: C14-C17) in textile articles, especially in polymer of the coated fabrics, prints made of polymer and buttons made of polymer (e.g. polyvinylchloride) by means of  solvent extraction and gas chromatography negative ion chemical ionization mass spectrometry (GC-NCI-MS).

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This document specifies a determination procedure of energy resolution in the scanning transmission electron microscope or the transmission electron microscope equipped with the electron energy loss (EEL) spectrometer. This document is applicable to both in-column type EEL spectrometer and post-column type EEL spectrometer. These EEL signal detecting systems are applicable to a parallel detecting system and a serial detecting system.

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This document specifies procedures for quantitative analysis of Mn dendritic segregation in steel billets, blooms, slabs using electron probe microanalysis (EPMA). This document is mainly applicable to continuously cast products with Mn content more than 0,01Â % by mass. It can also be used for steel ingots and steel products, such as cast iron and cast steel. The minimum size of analysable dendrites is totally dependent on the resolution of microscope of EPMA and beam size of filament used for quantitative analysis.

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This document specifies a method for the determination of free and released formaldehyde in leathers.
This method, based on high-performance liquid chromatography (HPLC), is selective and not sensitive
to coloured extracts and is intended to be used for precise quantification of formaldehyde.
The formaldehyde content is taken to be the quantity of free formaldehyde and formaldehyde extracted
through hydrolysis contained in a water extract from the leather under standard conditions of use.

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This European Standard describes a method for the determination of the boiling range distribution of petroleum products by capillary gas chromatography using flame ionisation detection. The standard is applicable to crude oils. The boiling range distribution and recovery to C100 or C120 can be determined.
Two procedures are described: single and dual analysis mode. The basis of each is the calculation procedure as described in Annex A.
NOTE 1   This standard does not purport to address all of the safety problems associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations.
NOTE 2   For the purposes of this European Standard, the terms "% (m/m)" and "% (V/V)" are used to represent respectively the mass fraction and the volume fraction.
WARNING : Use of this European Standard may involve hazardous materials, operations and equipment. This European Standard does not purport to address all of the safety problems associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and to determine the applicability of regulatory limitations prior to use.

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This document specifies a method for the determination of traces of perchlorate with liquid chromatography and tandem mass spectrometry detection (LC‐MS/MS). The method is applicable to mineral fertilizers.

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This document specifies a method for determining the total content of polychlorinated biphenyls (PCBs), checking for all 209 possible congeners in pigment materials.
This document is applicable to a working range from1 mg/kg to 150 mg/kg. The lower quantitation limit of this method is 1 mg/kg per congener. Results below 1 mg/kg are considered to be qualitative only.

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This International standard specifies a method for quantitative and qualitative analysis of extractable organotin compounds without derivatization in textile and textile‐related products.
This International Standard provides a method that uses Liquid Chromatograph with Tandem Mass Spectrometer (LC/MS/MS).

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This document specifies a test method by acetonitrile solvent extraction for the determination
of the total content (solvent extractible) of the following preservative agents in leather by liquid
chromatography:
— 2-(thiocyanomethylthio)-benzothiazole (TCMTB);
— 4-chloro-3-methylphenol (PCMC);
— 2-phenylphenol (OPP);
— 2-octylisothiazol-3(2H)-one (OIT);
This method can also be used to determine breakdown products of these preservative agents, which
protect leather from microbiological attack.

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2020-02-13 - waiting TC decision to skip FV.

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This European Standard specifies a method for quantitative determination of seven selected polychlorinated biphenyls (PCB28, PCB52, PCB101, PCB118, PCB138, PCB153 and PCB180) in soil, sludge, sediment, treated biowaste and waste and using GC-MS and GC-ECD.
The limit of detection depends on the determinants, the equipment used, the quality of chemicals used for the extraction of the sample and the clean-up of the extract.
Under the conditions specified in this European Standard, lower limit of application from 1 μg/kg (expressed as dry matter) for soils, sludge and biowaste to 10 μg/kg (expressed as dry matter) for solid waste can be achieved. For some specific samples the limit of 10 μg/kg cannot be reached.
Sludge, waste and treated biowaste may differ in properties, as well as in the expected contamination levels of PCBs and presence of interfering substances. These differences make it impossible to describe one general procedure. This European Standard contains decision tables based on the properties of the sample and the extraction and clean-up procedure to be used.
NOTE   For the analysis of PCB in insulating liquids, petroleum products, used oils and aqueous samples is referred to EN 61619, EN 12766–1 and EN ISO 6468 respectively.
The method may be applied to the analysis of other PCB congeners not specified in the scope, provided suitability is proven by proper in-house validation experiments

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This document specifies a test method by artificial perspiration solution aqueous extraction for the
determination of the aqueous extractable content of the following preservative agents in leather by
liquid chromatography:
— 2-(thiocyanomethylthio)-benzothiazole (TCMTB);
— 4-chloro-3-methylphenol (PCMC);
— 2-phenylphenol (OPP);
— 2-octylisothiazol-3(2H)-one (OIT);
This method can also be used to determine breakdown products of these preservative agents, which
protect leather from microbiological attack.

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This document establishes a valid method for separation of chemically heterogeneous polyethylene oxide (PEO) mixtures and for the determination the number and content of the chemically heterogeneous species in the overall sample. The method presented in this document serves as a technical guideline and enables laboratories to learn the principle of "critical chromatography" on a validated system. This method presented in this document with its stated system parameters is not applicable for other polymer classes, due to the diversity of the interactions between the polymer/mobile phase/stationary phase and the number of separation systems that are therefore available. The evaluation of the interlaboratory testing has shown that many error sources relate to the technique of liquid chromatography in general. Possible error sources are described in Annex A. Details on the evaluation of the interlaboratory testing are given in Annex B. Elugrams of the participants (excerpts) are given in Annex C. Investigations of the long-term stability of the test mixture are given in Annex D.

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This document is applicable for the determination of VOC and SVOC with an expected VOC and/or SVOC content greater than 0,01 % by mass up to 100 % by mass.
The method given in ISO 11890-1 is used when the VOC is greater than 15 % by mass. This document (method ISO 11890-2) applies when the system contains VOC and SVOC as the VOC result of ISO 11890-1 can be influenced by the SVOC. For VOC content smaller than 0,1 %, the head space method described in ISO 17895 is used as an alternative. ISO 11890-1 and ISO 17895 cannot be used for the determination of the SVOC content.
NOTE 1  Some ingredients of coating materials and their raw materials can decompose during analysis and cause artificial VOC and/or SVOC signals. When determining VOC and/or SVOC for coating materials and their raw materials, these signals are artefacts of the method and are not taken into account (examples are given in Annex B).
This method assumes that the volatile matter is either water or organic. However, other volatile inorganic compounds can be present and might need to be quantified by another suitable method and allowed for in the calculations. The method defined in this document is not applicable for determination of water content.
NOTE 2  If organic acids or bases and their corresponding salts are present in the coating material or its raw materials, the amount that is quantified by this method might not be accurate due to a change in the acid or base equilibrium.

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This document describes procedures for measuring average grain size derived from a two-dimensional polished cross-section using electron backscatter diffraction (EBSD). This requires the measurement of orientation, misorientation and pattern quality factor as a function of position in the crystalline specimen[1]. The measurements in this document are made on two dimensional sections. The reader should note carefully the definitions used (3.3) which draw a distinction between the measured sectional grain sizes, and the mean grain size which can be derived from them that relates to the three dimensional grain size. NOTE 1 While conventional methods for grain size determination using optical microscopy are well-established, EBSD methods offer a number of advantages over these techniques, including increased spatial resolution and quantitative description of the orientation of the grains. NOTE 2 The method also lends itself to the measurement of the grain size of complex materials, for example those with a significant duplex content. NOTE 3 The reader is warned to interpret the results with care when attempting to investigate specimens with high levels of deformation.

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This document specifies a test method for determining the presence of organotin compounds. This test
method is applicable to all types of materials of textile products.
NOTE CEN/TR 16741 defines which materials are concerned by this determination.

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This document specifies performance criteria for the selection of single-laboratory validated or collaborative study validated methods of analysis of mycotoxins in feed. The terms and definition of the relevant parameters for method validation are included. The performance requirements and characteristics are provided. This document could serve as a guide:
— to assess the quality of new European Standard methods under validation;
— to review the quality of previous collaborative trials;
— to confirm the extension of the scope of an already published European Standard applied to other analyte concentrations or matrices; or
— to evaluate the fitness-for-purpose of single-validated methods.
The performance criteria can apply to methods dedicated to the determination of mycotoxins.

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This document method is applicable for the determination of theobromine in compound feed by liquid chromatography with UV detection in the tested range of 27 to 307 mg/kg. This method has been validated using complementary compound feed for adult dogs and complementary compound feedstuff for horses. The actual working range may extend beyond the tested range. Alternative chromatography conditions using liquid chromatography tandem mass spectrometry (LC-MS/MS) are also provided for the validated range of 49 to 307 mg/kg. This method has also been shown to be fit for purpose for the determination of theobromine in baking chocolate by both HPLC-UV and LC-MS/MS.

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This International Standard gives criteria for mass spectrometric identification of target compounds in water. This document is a guideline for the identification of molecules <1 200 Da. For identification of larger molecules additional investigations are recommended.
This standard shall be used in conjunction with standards developed for the determination of the specific compounds. If the standards for analysing specific compounds give criteria for identification, those criteria shall be followed.

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This  document specifies the critical issues to address when developing in a laboratory a method for the simultaneous quantitative analysis of numerous organic compounds in water.

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This document specifies a method for the determination of selected perfluoroalkyl and polyfluoroalkyl substances (PFAS) in non-filtrated waters, for example drinking water, natural water (fresh water and sea water) and waste water containing less than 2 g/l solid particulate material (SPM) using liquid chromatography-tandem mass spectrometry (LC-MS/MS). The compounds monitored by this method are typically the linear isomers. The group of compounds determined by this method are representative of a wide variety of PFAS. The analytes specified in Table 1 can be determined by this method. The list can be modified depending on the purpose for which the method is intended. The lower application range of this method can vary depending on the sensitivity of the equipment used and the matrix of the sample. For most compounds to which this document applies ≥0,2 ng/l as limit of quantification can be achieved. Actual levels can depend on the blank levels realized by individual laboratory. The applicability of the method to further substances, not listed in Table 1, or to further types of water is not excluded, but is intended to be validated separately for each individual case.

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This document method is applicable for the determination of theobromine in compound feed by liquid chromatography with UV detection in the tested range of 27 to 307 mg/kg. This method has been validated using complementary compound feed for adult dogs and complementary compound feedstuff for horses. The actual working range may extend beyond the tested range. Alternative chromatography conditions using liquid chromatography tandem mass spectrometry (LC-MS/MS) are also provided for the validated range of 49 to 307 mg/kg. This method has also been shown to be fit for purpose for the determination of theobromine in baking chocolate by both HPLC-UV and LC-MS/MS.

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This document specifies a method for the determination of the boiling range distribution of petroleum products. The method is applicable to petroleum products and fractions with a final boiling point of 538 °C or lower at atmospheric pressure as determined by this document. This document does not apply to gasoline samples or gasoline components. The method is limited to products having a boiling range greater than 55 °C and having a vapour pressure sufficiently low to permit sampling at ambient temperature. The document describes two procedures. a) Procedure A allows a larger selection of columns and analysis conditions, such as packed and capillary columns as well as a thermal conductivity detector in addition to the flame ionization detector. Analysis times range from 14 min to 60 min. b) Procedure B is restricted to only three capillary columns and requires no sample dilution. The analysis time is reduced to about 8 min. Both procedures have been successfully applied to samples containing fatty acid methyl esters (FAME) up to 20 % (volume fraction).

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This document gives guidance to those involved in designing, executing and evaluating interlaboratory comparison studies for multi-analyte methods of analysis, developed by CEN/TC 327 “Animal feeding stuffs: Methods of sampling and analysis” and its working groups.
For the validation of multi-analyte methods their particularities must be considered which might necessitate deviations from the prescribed validation protocols. This study provides information whether the method is fit for its purpose and which performance can be expected in practical work while at the same time keeping the necessary effort for the study organizer and the participating laboratories minimal.
Next to the abovementioned aspects regarding interlaboratory comparison studies, this document also gives guidance on the preceding steps, viz. in-house validation and preparation of the method protocol. Guidance is also given on the transferability of the method protocol and the familiarization with the method protocol through a training study, elements that – depending on the specific method – could be included in the design of the study.

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This International Standard specifies the quantitative determination of 16 polycyclic aromatic hydrocarbons (PAH) according to the priority list of the Environmental Protection Agency, USA (EPA, 1982). This International Standard is applicable to all types of soil (field-moist or chemically dried samples), covering a wide range of PAH contamination levels.
Under the conditions specified in this International Standard, a lower limit of application of 0,01 mg/kg
(expressed as dry matter) can be ensured for each individual PAH.

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ISO 16772:2004 specifies a method for the determination of mercury in an aqua regia extract of soil, obtained in accordance with ISO 11464 and ISO 11466, using cold-vapour atomic absorption spectrometry or cold-vapour atomic fluorescence spectrometry. The limit of determination of the method is at least 0,1 mg/kg.

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ISO 13876:2013 specifies a method for quantitative determination of seven selected polychlorinated biphenyls (PCB28, PCB52, PCB101, PCB118, PCB138, PCB153, and PCB180) in sludge, treated biowaste, and soil using GC-MS and GC-ECD.

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This Technical Specification specifies a method for the determination of the following elements in aqua
regia or nitric acid digests or other extraction solutions of sludge, treated biowaste and soil:
Aluminium (Al), antimony (Sb), arsenic (As), barium (Ba), beryllium (Be), bismuth (Bi), boron
(B), cadmium (Cd), calcium (Ca), cerium (Ce), cesium (Cs), chromium (Cr), cobalt (Co), copper (Cu),
dysprosium (Dy), erbium (Er), europium (Eu), gadolinium (Gd), gallium (Ga), germanium (Ge), gold (Au),
hafnium (Hf), holmium (Ho), indium (In), iridium (Ir), iron (Fe), lanthanum (La), lead (Pb), lithium (Li),
lutetium (Lu), magnesium (Mg), manganese (Mn), mercury (Hg), molybdenum (Mo), neodymium (Nd),
nickel (Ni), palladium (Pd), phosphorus (P), platinum (Pt), potassium (K), praseodymium (Pr), rhenium
(Re), rhodium (Rh), rubidium (Rb), ruthenium (Ru), samarium (Sm), scandium (Sc), selenium (Se),
silicon (Si), silver (Ag), sodium (Na), strontium (Sr), sulfur (S), tellurium (Te), terbium (Tb), thallium
(Tl), thorium (Th), thulium (Tm), tin (Sn), titanium (Ti), tungsten (W), uranium (U), vanadium (V),
ytterbium(Yb), yttrium (Y), zinc (Zn) and zirconium (Zr).
The working range depends on the matrix and the interferences encountered.
The limit of detection is between 0,1 mg/kg dry matter and 2,0 mg/kg dry matter for most elements.
The limit of detection will be higher in cases where the determination is likely to have interferences (see
Clause 4) or in the case of memory effects (see e.g. 8.2 of ISO 17294-1:2004).

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This International Standard specifies a method for quantitative determination of seven polychlorinated biphenyls
and seventeen organochlorine pesticides in soil.
This International Standard is applicable to all types of soil.
Under the conditions specified in this International Standard, limits of detection of 0,1 μg/kg to 4 μg/kg (expressed
as dry matter) can be achieved.

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This International Standard describes the determination of trace elements in digests or extraction solutions
from soil by inductively coupled plasma - atomic emission spectrometry (ICP-AES) for 34 elements (see
Table 1).
This multi-element determination method is applicable to soil extracts obtained with aqua regia in accordance
with ISO 11466, with DTPA in accordance with ISO 14870 or other weak extractants, or soil extracts for the
determination of total element contents using the acid digestion method of ISO 14869-1 or the fusion method
of ISO 14869-2.
The choice of calibration method depends on the extractant and can be adapted to the extractant
concentration.

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This part of ISO 17378 specifies a method for the determination of arsenic and antimony. The method
is applicable to drinking water, surface water, ground water, and rain water. The approximate linear
application range of this part of ISO 17378 for both elements is from 0,5 μg/l to 20 μg/l. Samples
containing higher concentrations than the application range can be analysed following appropriate
dilution.
Generally sea water is outside the scope of this part of ISO 17378. Sea water samples can be analysed
using a standard additions approach providing that this is validated for the samples under test. The
method is unlikely to detect organo-arsenic and organo-antimony compounds.
The sensitivity of this method is dependent on the selected operating conditions.

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This document specifies a high performance liquid chromatographic – tandem mass spectrometry (LC-MS/MS) method for the simultaneous screening and/or determination of the eleven authorised coccidiostats (halofuginone, robenidine hydrochloride, nicarbazin, diclazuril, decoquinate, monensin sodium, salinomycin sodium, narasin, lasalocid sodium, semduramicin sodium and maduramicin ammonium alpha) contents in poultry, cattle and pig feed at additive and cross-contamination levels and of five non-registered coccidiostats (ethopabate, clopidol, ronidazole, dimetridazole and amprolium) at sub-additive levels and for the screening of the prohibited furazolidone antibiotic at sub-additive level, in the same matrices.
The range of application of the method is fit for the purpose of the screening and determination of all eleven coccidiostats at the values set by European legislation, of the non-registered coccidiostats and of the screening of the banned antibiotic.

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This document specifies a general method for determining the average molecular weight and the
molecular weight distribution of polymers using SEC-LS, i.e. size-exclusion chromatography coupled
with light-scattering detection. The average molecular weight and the molecular weight distribution
are calculated from molecular weight data and weight concentrations determined continuously with
elution time. The molecular weight at each elution time is determined absolutely by combining a
light-scattering detector with a concentration-sensitive detector. Therefore, SEC-LS is classified as an
absolute method.
This method is applicable to linear homopolymers and to nonlinear homopolymers such as branched,
star-shaped, comb-like, stereo-regular and stereo-irregular polymers. It can also be applied to
heterophasic copolymers whose molecular composition cannot vary. However, SEC-LS is not applicable
to block, graft or heterophasic copolymers whose molecular composition can vary. And the methods are
applicable to molecular weights ranging from that of the monomer to 3 000 000, but are not intended
for samples that contain > 30 % of components having a molecular weight < 1 000.

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This Technical Specification gives a test method for determining the amounts of dimethyl fumarate (DMFu) in materials of textile products, desiccant sachets and other commodities.
The test method is not applicable to metal parts. The materials to which it is applicable are given in CEN/TR 16741:2015, Table 1.
NOTE In Europe, DMFu is prohibited in biocidal products as per Directive 98/8/EC. The substance must be used with caution to avoid any health problems in the chemistry laboratory. More recently, EU Commission Decision 2009/251/EC requires EU member states to ensure that products containing the biocide DMFu are not placed or made available on the market in the European Union. Decision 2009/251/EC establishes a maximum concentration of DMFu in products and parts of products of 0,1 mg/kg.

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This document specifies a method to determine the amounts of dimethylformamide (DMF) in components of
textile products containing polyurethane or acrylic.
NOTE Further information may be found in CEN/TR 16741:2015, Table 1 that defines which materials are
concerned by this determination.

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This document specifies a method to determine the amounts of polycyclic aromatic hydrocarbons
(PAH) in components of textile products.

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This document specifies a test method for the determination of the content of the following
preservative agents (bioactive agents):
— 2-phenylphenol (OPP);
— triclosan
in textile products by liquid chromatography.
NOTE The preservative agent 2-phenylphenol (OPP) can also be determined according to EN ISO 17070 and quantified by means of gas chromatography/mass spectroscopy (GC/MS).

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