Name: ASTM F307-02(2007) - Standard Practice for Sampling Pressurized Gas for Gas Analysis
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Abstract

Standard Practice for Sampling Pressurized Gas for Gas Analysis

ABSTRACT
This practice describes the procedure for obtaining a sample of pressurized gas for gas analysis from a system or component. A sample pressure vessel shall be evacuated and sealed with a minimum vacuum pressure. The vessel shall then be attached to the designated pressurized sample port. The pressurized gas is allowed to enter the sample vessel until the pressure is equal to the pressure of the system or component. The pressure shall be secured and the sample vessel assigned for appropriate analysis. The apparatus shall consist of connecting lines, miscellaneous fittings, tie-downs, and a gas sample vessel.
SCOPE
1.1 This practice describes the procedure for obtaining a sample of pressurized gas for gas analysis from a system or component.
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1.3 This standard does not purport to address all of the safety concerns, if any, 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 prior to use. For hazard statement, see Section 5.

General Information

Status

Historical

Publication Date

31-Mar-2007

ICS

71.040.40 - Chemical analysis

Technical Committee

E21 - Space Simulation and Applications of Space Technology

Drafting Committee

E21.05 - Contamination

Current Stage

Ref Project

Relations

Replaces

ASTM F307-02 - Standard Practice for Sampling Pressurized Gas for Gas Analysis

Effective Date

01-Apr-2007

Replaced By

ASTM F307-13 - Standard Practice for Sampling Pressurized Gas for Gas Analysis

Effective Date

01-Jun-2013

Referred By

ASTM D3246-15 - Standard Test Method for Sulfur in Petroleum Gas by Oxidative Microcoulometry (Withdrawn 2024)

Effective Date

01-Apr-2007

Referred By

ASTM D6667-21 - Standard Test Method for Determination of Total Volatile Sulfur in Gaseous Hydrocarbons and Liquefied Petroleum Gases by Ultraviolet Fluorescence

Effective Date

01-Apr-2007

Referred By

ASTM D7833-20 - Standard Test Method for Determination of Hydrocarbons and Non-Hydrocarbon Gases in Gaseous Mixtures by Gas Chromatography

Effective Date

01-Apr-2007

Referred By

ASTM D7551-10(2015) - Standard Test Method for Determination of Total Volatile Sulfur in Gaseous Hydrocarbons and Liquefied Petroleum Gases and Natural Gas by Ultraviolet Fluorescence

Effective Date

01-Apr-2007

Referred By

ASTM D2712-23 - Standard Test Method for Determination of Hydrocarbon Impurities in High Purity Propylene by Gas Chromatography

Effective Date

01-Apr-2007

Referred By

ASTM D5507-21a - Standard Test Method for Determination of Trace Organic Impurities in Monomer Grade Vinyl Chloride by Capillary Column/Multidimensional Gas Chromatography

Effective Date

01-Apr-2007

Referred By

ASTM D2505-88(2015) - Standard Test Method for Ethylene, Other Hydrocarbons, and Carbon Dioxide in High-Purity Ethylene by Gas Chromatography (Withdrawn 2024)

Effective Date

01-Apr-2007

Referred By

ASTM D5234-92(2017) - Standard Guide for Analysis of Ethylene Product

Effective Date

01-Apr-2007

Referred By

ASTM D6159-23 - Standard Test Method for Determination of Hydrocarbon Impurities in Ethylene by Gas Chromatography

Effective Date

01-Apr-2007

Referred By

ASTM D3764-23 - Standard Practice for Validation of the Performance of Process Stream Analyzer Systems

Effective Date

01-Apr-2007

Referred By

ASTM D8098-23 - Standard Test Method for Permanent Gases in C<inf>2</inf> and C<inf>3</inf> Hydrocarbon Products by Gas Chromatography and Pulse Discharge Helium Ionization Detector

Effective Date

01-Apr-2007

Referred By

ASTM D2504-88(2015) - Standard Test Method for Noncondensable Gases in C<inf>2</inf> and Lighter Hydrocarbon Products by Gas Chromatography (Withdrawn 2024)

Effective Date

01-Apr-2007

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ASTM F307-02(2007) - Standard Practice for Sampling Pressurized Gas for Gas Analysis

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ASTM F307-02(2007) - Standard ...

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: F307 − 02 (Reapproved2007)
Standard Practice for
Sampling Pressurized Gas for Gas Analysis
ThisstandardisissuedundertheﬁxeddesignationF307;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginal
adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.Asuperscript
epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope 4.1 Connecting Lines, rigid or ﬂexible, pressure rated and
identiﬁed within recognized safety codes.
1.1 This practice describes the procedure for obtaining a
sample of pressurized gas for gas analysis from a system or
4.2 Miscellaneous Fittings, as needed for sampling point
component.
adaption.
1.2 The values stated in SI units are to be regarded as the
4.3 Tie-downs, suitable for sample line restraint in accord
standard. The values given in parentheses are for information
with pressure, temperature, and recognized safety codes.
only.
4.4 Gas Sample Vessel, evacuated to a suitable pressure for
1.3 This standard does not purport to address all of the
the gas analysis method to be used. This vessel should have
safety concerns, if any, associated with its use. It is the
valves at inlet and outlet to enable lockup of vacuum or
responsibility of the user of this standard to establish appro-
pressure. (See Fig. 1.)
priate safety and health practices and determine the applica-
NOTE 2—The gas sample vessel capacity is in accord with desired
bility of regulatory limitations prior to use. For hazard
sample volume. A recommended 8-L (500-in ) volume has been deter-
statement, see Section 5.
mined adequate to aerospace industry. The gas sample vessel must be
pressure-rated for the system or component to be sampled.
2. Terminology
5. Safety Hazards
2.1 Deﬁnitions:
2.1.1 sample port—the designated point in a system or
5.1 Personnel must stand clear of exiting gas.
component from which a representative gas sample may be
5.2 Ear protection must be used when gas ﬂow approaches
taken.
sonic velocity.
3. Summary of Practice
5.3 All lines and associated equipment must be connected
and operated within the requirements of recognized safety
3.1 Asample pressure vessel is evacuated and sealed with a
codes.
minimum vacuum pressure of 10-3 torr. The vessel is then
attached to the designated pressurized sample port. The pres-
6. Procedure
surized gas is allowed to enter the sample vessel until the
pressure is equal to the pressure of the system or component.
6.1 Establish and maintain a minimum purge at the sample
The pressure is secured and the sample vessel assigned for
port.
appropriate analysis.
6.2 Connect one end of a suitable connecting line to the
sample port, and continue to purge.
4. Apparatus
NOTE 1—All apparatus used in the sample taking should be veriﬁed as
6.3 Install tie-down as required
...

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ABSTRACT
This practice describes the apparatuses needed, and the procedures for connecting, preparing, and sampling pressurized gas blow down systems and components for particulate contamination by the use an automatic particle monitor. The sensing unit of the automatic particle monitor is connected to the designated sample port which is under purge condition. The system flow rate is then adjusted to the sample flow rate requirement. Finally, all the gas passing through the sensing unit is monitored for particulate contamination until the required sample volume has been analyzed.
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1.1 This practice describes how to connect, prepare, and sample pressurized gas systems (having up to 19.1-mm (0.75-in.) diameter lines) for particulate contamination by using an automatic monitor.
1.2 The values stated in MKS units are to be regarded as the standard. The values given in parentheses are for information only.
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. For hazard statements, see Section 5.
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Standard Practice for Sampling Pressurized Gas for Gas Analysis

ABSTRACT
This practice describes the procedure for obtaining a sample of pressurized gas for gas analysis from a system or component. A sample pressure vessel shall be evacuated and sealed with a minimum vacuum pressure. The vessel shall then be attached to the designated pressurized sample port. The pressurized gas is allowed to enter the sample vessel until the pressure is equal to the pressure of the system or component. The pressure shall be secured and the sample vessel assigned for appropriate analysis. The apparatus shall consist of connecting lines, miscellaneous fittings, tie-downs, and a gas sample vessel.
SCOPE
1.1 This practice describes procedures for obtaining a sample of pressurized gas for gas analysis from a system or component.
1.2 The values stated in SI units are to be regarded as the standard.
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. For hazard statement, see Section 6.
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ASTM D5788-95(2024)(Guide)

Standard Guide for Spiking Organics into Aqueous Samples

SIGNIFICANCE AND USE
5.1 Matrix spiking of samples is commonly used to determine the bias under specific analytical conditions, or the applicability of a test method to a particular sample matrix, by determining the extent to which the added spike is recovered from the sample matrix under these conditions. Reactions or interactions of the analyte or component of interest with the sample matrix may cause a significant positive or negative effect on recovery and may render the chosen analytical, or monitoring, process ineffectual for that sample matrix.
5.2 Matrix spiking of samples can also be used to monitor the performance of a laboratory, individual instrument, or analyst as part of a regular quality assurance program. Changes in spike recoveries from the same or similar matrices over time may indicate variations in the quality of analyses and analytical results.
5.3 Spiking of samples may be performed in the field or in the laboratory, depending on what part of the analytical process is to be tested. Field spiking tests the recovery of the overall process, including preservation and shipping of the sample and may be considered a measure of the stability of the analytes in the matrix. Laboratory spiking tests the laboratory process only. Spiking of sample extracts, concentrates, or dilutions will be reflective of only that portion of the process subsequent to the addition of the spike.
5.4 Special precautions shall be observed when nonlaboratory personnel perform spiking in the field. It is recommended that all spike preparation work be performed in a laboratory by experienced analysts so that the field operation consists solely of adding a prepared spiking solution to the sample matrix. Training of field personnel and validation of their spiking techniques are necessary to ensure that spikes are added accurately and reproducibly. Consistent and acceptable recoveries from duplicate field spikes can be used to document the reproducibility of sampling and the spiking technique....
SCOPE
1.1 This guide covers the general technique of “spiking” aqueous samples with organic analytes or components. It is intended to be applicable to a broad range of organic materials in aqueous media. Although the specific details and handling procedures required for all types of compounds are not described, this general approach is given to serve as a guideline to the analyst in accurately preparing spiked samples for subsequent analysis or comparison. Guidance is also provided to aid the analyst in calculating recoveries and interpreting results. It is the responsibility of the analyst to determine whether the methods and materials cited here are compatible with the analytes of interest.
1.2 The procedures in this guide are focused on “matrix spike” preparation, analysis, results, and interpretation. The applicability of these procedures to the preparation of calibration standards, calibration check standards, laboratory control standards, reference materials, and other quality control materials by spiking is incidental. A sample (the matrix) is fortified (spiked) with the analyte of interest for a variety of analytical and quality control purposes. While the spiking of multiple sample test portions is discussed, the method of standard additions is not covered.
1.3 This guide is intended for use in conjunction with the individual analytical test method that provides procedures for analysis of the analyte or component of interest. The test method is used to determine an analyte or component's background level and, again after spiking, its now elevated level. Each test method typically provides procedures not only for samples, but also for calibration standards or analytical control solutions, or both. These procedures include preparation, handling, storage, preservation, and analysis techniques. These procedures are applicable by extension, using the analyst's judgement on a case-by-case basis, to spiking solutions, ...

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ASTM D7959-24(Test Method)

Standard Test Method for Chloride Content Determination of Aviation Turbine Fuels using Chloride Test Strip

SIGNIFICANCE AND USE
5.1 Chloride present in aviation turbine fuel can originate from refinery salt drier carryover or possibly from seawater contamination (for example, product transferred by barge). Elevated chloride levels have caused corrosive and abrasive wear of aircraft fuel control systems leading to engine failure.4
SCOPE
1.1 This test method covers a rapid means of determining chloride content of aviation turbine fuel. This methodology is applicable for chloride concentrations between 0 mg/L to 0.5 mg/L. This methodology will not detect chlorine originating from chlorinated organic compounds (that is, covalent bond).
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
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ASTM E203-24(Test Method)

Standard Test Method for Water Using Volumetric Karl Fischer Titration

SIGNIFICANCE AND USE
4.1 Titration techniques using KF reagent are one of the most widely used for the determination of water.
4.2 Although the volumetric KF titration can determine low levels of water, it is generally accepted that coulometric KF titrations (see Test Method E1064) are more accurate for routine determination of very low levels of water. As a general rule, if samples routinely contain water concentrations of 500 mg/kg or less, the coulometric technique should be considered.
4.3 Applications can be subdivided into two sections: (1) organic and inorganic compounds, in which water may be determined directly, and (2) compounds, in which water cannot be determined directly, but in which interferences may be eliminated by suitable chemical reactions or modifications of the procedure. Further discussion of interferences is included in Section 5 and Appendix X2.
4.4 Water can be determined directly in the presence of the following types of compounds:
Organic Compounds
Acetals
Ethers
Acids (Note 1)
Halides
Acyl halides
Hydrocarbons (saturated and unsaturated)
Alcohols
Ketones, stable (Note 4)
Aldehydes, stable (Note 2)
Nitriles
Amides
Orthoesters
Amines, weak (Note 3)
Peroxides (hydro, dialkyl)
Anhydrides
Sulfides
Disulfides
Thiocyanates
Esters
Thioesters
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Acids (Note 5)
Cupric oxide
Acid oxides (Note 6)
Desiccants
Aluminum oxides
Hydrazine sulfate
Anhydrides
Salts of organic and inorganic acids (Note 6)
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Calcium carbonate
Note 1: Some acids, such as formic, acetic, and adipic acid, are slowly esterified. When using pyridine-free reagents, commercially available buffer solutions can be added to the sample prior to titration. With formic acid, it may be necessary to use methanol-free solvents and titrants (1).4
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1.2 The values stated in SI units are to be regarded as standard.
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. Specific warnings are given in 3.1.
1.4 Review the current Safety Data Sheets (SDS) for detailed information concerning toxicity, first aid procedures, and safety precautions for chemicals used in this test procedure.
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Standard Test Method for Antimony Content Using Neutron Activation Analysis (NAA)

SIGNIFICANCE AND USE
5.1 High levels of antimony are commonly used in flame retardant formulations for various materials. NAA is a test method that can be useful for verifying these levels and, for other materials, NAA can also be useful in establishing the amount of low level contamination, if any, with high sensitivity and high precision.
5.2 Neutron activation analysis provides a rapid, highly sensitive, nondestructive procedure for antimony determination in a wide range of matrices. This test method is independent of the chemical form of the antimony.
5.3 This test method can be used for quality and process control in the petrochemical and other manufacturing industries, and for research purposes in a broad spectrum of applications.
SCOPE
1.1 This test method covers the measurement of antimony concentration in plastics or other hydrocarbon or organic matrix by using neutron activation analysis (NAA). The sample is activated by irradiation with neutrons from a research reactor and the subsequently emitted gamma-rays are detected with a germanium semiconductor detector. The same system may be used to determine antimony concentrations ranging from 1 ng/g to 10 000 μg/g with the lower end of the range limited by numerous interferences and the upper limit established by the demonstrated practical application of NAA.
1.2 This test method may be used on either solid or liquid samples, provided that they can be made to conform in size and shape during irradiation and counting to a standard sample of known antimony content using very simple sample preparation. Several variants of this method have been described in the technical literature. A monograph is available which provides a comprehensive description of the principles of neutron activation analysis using reactor neutrons (1).2
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. Specific precautions are given in Section 9.
1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

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Standard Test Method for Determination of Trace Elements in Soda-Lime Glass Samples Using Laser Ablation Inductively Coupled Plasma Mass Spectrometry for Forensic Comparisons

SIGNIFICANCE AND USE
5.1 This test method is useful for the determination of elemental concentrations in the range of approximately 0.1 µgg-1 to 10 percent (%) (See Table X1.1) in soda-lime glass samples (7 and 8). A standard test method can aid in the interchange of data between laboratories and in the creation and use of glass databases.
5.2 The determination of elemental concentrations in glass provides high discriminating value in the forensic comparison of glass fragments.
5.3 This test method produces minimal destruction of the sample. Microscopic craters of 50 µm to 100 µm in diameter by 80 µm to 150 µm deep are left in the glass fragment after analysis. The mass removed per replicate is approximately 0.4 µg to 3 µg (6).
5.4 Appropriate sampling techniques shall be used to account for natural heterogeneity of the materials at a microscopic scale.
5.5 The precision, bias, and limits of detection of the method (for each element measured) shall be established during validation of the method. The measurement uncertainty of any concentration value used for a comparison shall be recorded with the concentration.
5.6 Acid digestion of glass followed by either Inductively Coupled Plasma-Optical Emission Spectrometry (ICP-OES) or Inductively Coupled Plasma-Mass Spectrometry (ICP-MS) can also be used for trace elemental analysis of glass, and offer similar detection levels and the ability for quantitative analysis. However, these methods are destructive, and require larger sample sizes and more sample preparation (Test Method E2330).
5.7 Micro X-Ray Fluorescence (µ-XRF) uses comparable sample sizes to those used for LA-ICP-MS with the advantage of being non-destructive of the sample. Some of the drawbacks of µ-XRF include lower sensitivity and precision, and longer analysis time (Test Method E2926).
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SCOPE
1.1 This test method covers a procedure for the quantitative elemental analysis of the following seventeen elements: lithium (Li), magnesium (Mg), aluminum (Al), potassium (K), calcium (Ca), iron (Fe), titanium (Ti), manganese (Mn), rubidium (Rb), strontium (Sr), zirconium (Zr), barium (Ba), lanthanum (La), cerium (Ce), neodymium (Nd), hafnium (Hf) and lead (Pb) through the use of laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) for the forensic comparison of glass fragments. The potential of these elements to provide the best discrimination among different sources of soda-lime glasses has been published elsewhere (1-5).2 Silicon (Si) is also monitored for use as a normalization standard. Additional elements may be added as needed, for example, tin (Sn) can be used to monitor the orientation of float glass fragments.
1.2 The method only consumes approximately 0.4 µg to 3 µg of glass per replicate and is suitable for the analysis of full thickness samples as well as irregularly shaped fragments as small as 0.1 mm by 0.1 mm by 0.2 mm (6) in dimension. The concentrations of the elements listed above range from the low parts per million (µgg-1) to percent (%) levels in soda-lime glass, the most common type encountered in forensic cases. This standard method can be applied for the quantitative analysis of other glass types; however, some modifications in the reference standard glasses and the element menu may be required.
1.3 This standard is intended for use by competent forensic science practitioners with the requisite formal education, discipline-specific training (see Practice E2917), and demonstrated proficiency to perform forensic casework.
1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the respo...

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ASTM D5544-16(2023)(Test Method)

Standard Test Method for On-Line Measurement of Residue After Evaporation of High-Purity Water

SIGNIFICANCE AND USE
5.1 Even so-called high-purity water will contain contaminants. While not always present, these contaminants may contribute one or more of the following: dissolved active ionic substances such as calcium, magnesium, sodium, potassium, manganese, ammonium, bicarbonates, sulfates, nitrates, chloride and fluoride ions, ferric and ferrous ions, and silicates; dissolved organic substances such as pesticides, herbicides, plasticizers, styrene monomers, deionization resin material; and colloidal suspensions such as silica. While this test method facilitates the monitoring of these contaminants in high-purity water, in real time, with one instrument, this test method is not capable of identifying the various sources of residue contamination or detecting dissolved gases or suspended particles.
5.2 This test method is calibrated using weighed amounts of an artificial contaminant (potassium chloride). The density of potassium chloride is reasonably typical of contaminants found in high-purity water; however, the response of this test method is clearly based on a response to potassium chloride. The response to actual contaminants found in high-purity water may differ from the test method's calibration. This test method is not different from many other analytical test methods in this respect.
5.3 Together with other monitoring methods, this test method is useful for diagnosing sources of RAE in ultra-pure water systems. In particular, this test method can be used to detect leakages such as colloidal silica breakthrough from the effluent of a primary anion or mixed-bed deionizer. In addition, this test method has been used to measure the rinse-up time for new liquid filters and has been adapted for batch-type sampling (this adaptation is not described in this test method).
5.4 Obtaining an immediate indication of contamination in high-purity water has significance to those industries using high-purity water for manufacturing components; production can be halted immediate...
SCOPE
1.1 This test method covers the determination of dissolved organic and inorganic matter and colloidal material found in high-purity water used in the semiconductor, and related industries. This material is referred to as residue after evaporation (RAE). The range of the test method is from 0.001 μg/L (ppb) to 60 μg/L (ppb).
1.2 This test method uses a continuous, real time monitoring technique to measure the concentration of RAE. A pressurized sample of high-purity water is supplied to the test method's apparatus continuously through ultra-clean fittings and tubing. Contaminants from the atmosphere are therefore prevented from entering the sample. General information on the test method and a literature review on the continuous measurement of RAE has been published.2
1.3 The values stated in SI units are to be regarded as standard. The values given in parentheses are mathematical conversions to inch-pound units that are provided for information only and are not considered standard.
1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. For specific hazards statements, see Section 8.
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Standard Test Method for Heat of Reaction of Thermally Reactive Materials by Differential Scanning Calorimetry

SIGNIFICANCE AND USE
5.1 This test method is useful in determining the extrapolated onset temperature, the peak heat flow temperature and the heat of reaction of a material. Any onset temperature determined by this test method is not valid for use as the sole information used for determination of storage or processing conditions.
5.2 This test method is useful in determining the fraction of a reaction that has been completed in a sample prior to testing. This fraction of reaction that has been completed can be a measure of the degree of cure of a thermally reactive polymer or can be a measure of decomposition of a thermally reactive material upon aging.
5.3 The heat of reaction values may be used in Practice E1231 to determine hazard potential figures-of-merit Explosion Potential and Shock Sensitivity.
5.4 This test method may be used in research, process control, quality assurance, and specification acceptance.
SCOPE
1.1 This test method determines the exothermic heat of reaction of thermally reactive chemicals or chemical mixtures, using milligram specimen sizes, by differential scanning calorimetry. Such reactive materials may include thermally unstable or thermoset materials.
1.2 This test method also determines the extrapolated onset temperature and peak heat flow temperature for the exothermic reaction.
1.3 This test method may be performed on solids, liquids or slurries.
1.4 The applicable temperature range of this test method is 25 °C to 600 °C.
1.5 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.6 This standard is related to Test Method E537, but provides additional information.
1.7 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.8 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

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SIGNIFICANCE AND USE
5.1 Organic as well as inorganic chlorine compounds can prove harmful to equipment and reactions in processes involving hydrocarbons.
5.2 Maximum chloride levels are often specified for process streams and for hydrocarbon products.
5.3 Organic chloride species are potentially damaging to refinery processes. Hydrochloric acid can be produced in hydrotreating or reforming reactors and this acid accumulates in condensing regions of the refinery.
SCOPE
1.1 This test method covers the determination of organic chloride in aromatic hydrocarbons, their derivatives, and related chemicals.
1.2 This test method is applicable to samples with chloride concentrations to 25 mg/kg. The limit of detection (LOD) is 0.2 mg/kg and the limit of quantitation (LOQ) is 0.7 mg/kg. With careful analytical technique or the measurement of replicates, or both, this method can be used to successfully analyze concentrations below the LOD.
Note 1: The maximum is the highest concentration from the interlaboratory study and the LOD and LOQ were calculated from Performance Testing Program (PTP) data. See Table 1.
1.3 This test method is preferred over Test Method D5194 for products, such as styrene, that are polymerized by the sodium biphenyl reagent.
1.4 In determining the conformance of the test results using this method to applicable specifications, results shall be rounded off in accordance with the rounding-off method of Practice E29.
1.5 Organic chloride values of samples containing inorganic chlorides will be biased high due to partial recovery of inorganic species during combustion. Interference from inorganic species can be reduced by water washing the sample before analysis. This does not apply to water soluble samples.
1.6 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.7 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. For specific hazard statements, see 7.3 and Section 9.
1.8 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

Standard
5 pages
English language
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Standard
5 pages
English language
sale 15% off

31-Oct-2023
71.040.40
71.080.20
D16