This document specifies a method for the determination of the mass per unit area. It also specifies five
methods (Method A to Method E) for the determination of the fibre mass per unit area of moulding
compounds and prepregs. The five methods are as follows:
— Method A: Extraction by Soxhlet;
— Method B: Extraction by immersion in solvent in a beaker;
— Method C: Decomposition by loss ignition;
— Method D: Extraction by wet combustion;
— Method E: Method by calculation.
This document is applicable to the following types of materials:
— moulding compound and preimpregnated unidirectional sheet, tape, fabric and mats;
— prepregs in which any type of reinforcement (aramid, carbon, glass, etc.) and any type of matrix
(thermosetting or thermoplastic) has been used.
Typically, reinforcement fibres are coated with sizing or finishes. These normally dissolve with the
resin and are, therefore, included in the resin content.
This document is not applicable to the following types of prepregs:
— those containing reinforcements which are soluble (or partly soluble) in the solvents used to dissolve
the resin.

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This Standard is applicable to full size thermal insulating products and test specimens. This standard can also be applied to the individual layers of multi layered products. It specifies the equipment and procedures for determining the apparent overall density and the apparent core density under reference conditions.

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ISO 80000-3:2019 gives names, symbols, definitions and units for quantities of space and time. Where appropriate, conversion factors are also given.

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This document gives guidelines for determining the average surface density over a measured area
of anodic oxide or of a coating deposited autocatalytically, mechanically, by chemical conversion,
by electrodeposition, by hot dip galvanizing and by chemical or physical vapour deposition using
gravimetric and other chemical analysis procedures that have attained some degree of national or
international standardization.
A variety of procedures are described and include:
— gravimetric procedures for chemical or electrochemical dissolution of the coating or the substrate
to determine the coating surface density;
— gravimetric procedures for weighing the uncoated substrate and the coated (finished) specimen to
determine the coating surface density;
— analytical procedures that utilize dissolution of the coating for determination of the coating surface
density by instrumental chemical analysis methods.
With the exception of the gravimetric method as described in ISO 3892, this document does not give the
measurement uncertainties of the methods cited.

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This document specifies three methods for the determination of dry bulk density of soils calculated
from the mass and the volume of a soil sample. The methods involve drying and weighing a soil sample,
the volume of which is either known [core method (see 4.1)] or determined [excavation method (see 4.2)
and clod method (see 4.4)].

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This part of IEC 61987 provides an
• operating list of properties (OLOP) for the description of the operating parameters and the
collection of requirements for a density measuring equipment, and
• device lists of properties (DLOP) for a range of density measuring equipment types
describing them.
The structures of the OLOP and the DLOP correspond with the general structures defined in
IEC 61987-11 and agree with the fundamentals for the construction of LOPs defined in
IEC 61987-10.
Aspects other than the OLOP, needed in different electronic data exchange processes
described in IEC 61987-10, will be published in IEC 61987-921.
Libraries of properties and of blocks used in the concerned LOPs are listed in Annex C and
Annex D.

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This document specifies a method for determining the absolute particle density of fine ceramic powders or sintered parts using liquid pycnometry.
NOTE Other pycnometer methods like gas pycnometers (e.g. helium pycnometer), where a gas is used as media, also exist.

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This document specifies a method for the determination of the change of mass and the change of volume of self-levelling and non-sagging sealants used in joints in building construction.
NOTE This test procedure is not intended to determine the absolute maximum value of loss of volume of a tested sealant, but it is an indicative measurement of the loss of volume under specified parameters.

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This standard describes the method for determining the particle density of compressed fuels such as pellets or briquettes. Particle density is not an absolute value and conditions for its determination have to be standardised to enable comparative determinations to be made.

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This document describes a method of determining bulk density of solid biofuels by the use of a standard measuring container. This method is applicable to all solid biofuels with a nominal top size of maximum 100 mm.
Bulk density is not an absolute value, therefore conditions for its determination have to be standandised in order to gain comparative measuring results.
Note 1: The nominal top size is defined as the aperture size of the sieve where at least 95 % by mass of the material passes (ISO DIS 16559 (14588)).
Note 2: Bulk density of solid biofuels is subject to variation due to several factors such as vibration, shock, pressure, biodegradation, drying and wetting. Measured bulk density can therefore deviate from actual conditions during transportation, storage and transhipment.

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This European Standard sets out principles for the design of volumetric instruments manufactured from glass or from plastics in order to facilitate the most reliable and convenient use to the intended degree of accuracy.

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ISO 384:2015 sets out principles for the design of volumetric instruments manufactured from glass or from plastics in order to facilitate the most reliable and convenient use to the intended degree of accuracy.

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ISO 3819:2015 specifies requirements for an internationally acceptable series of glass beakers for laboratory use.

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ISO 3819:2015 specifies requirements for an internationally acceptable series of glass beakers for laboratory use.

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ISO 384:2015 sets out principles for the design of volumetric instruments manufactured from glass or from plastics in order to facilitate the most reliable and convenient use to the intended degree of accuracy.

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The terminology used in this Standard conforms to the ?International Vocabulary of Basic and General Terms in Metrology? (VIM), the ?International Vocabulary of Terms in Legal Metrology? (VIML). In addition for the purposes of this Standard, the following definitions apply. An index of all the terms, 166 definitions and references defined below can be found under T.8.

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This International Standard provides methods for the testing, calibration and use of volumetric instruments made from glass in order to obtain the best accuracy in use.
NOTE Testing is the process by which the conformity of the individual volumetric instrument with the appropriate standard is determined, culminating in the determination of its error of measurement at one or more points.
The International Standards for the individual volumetric instruments include clauses on the definition of capacity; these clauses describe the method of manipulation in sufficient detail to define the capacity without ambiguity. This International Standard contains supplementary information.
The procedures are applicable to volumetric instruments with nominal capacities in the range of 0,1 ml to 10 000 ml. These include: single-volume pipettes (see ISO 648) without subdivisions; graduated measuring pipettes and dilution pipettes, with partial or complete subdivisions (see ISO 835); burettes (see ISO 385); volumetric flasks (see ISO 1042); and graduated measuring cylinders (see ISO 4788). The procedures are not recommended for testing of volumetric instruments with capacities below 0,1 ml such as micro-glassware.
This International Standard does not deal specifically with pyknometers as specified in ISO 3507. However, the procedures specified below for the determination of volume of glassware can, for the most part, also be followed for the calibration of pyknometers.

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ISO 4787:2010 provides methods for the testing, calibration and use of volumetric instruments made from glass in order to obtain the best accuracy in use.
The International Standards for the individual volumetric instruments (ISO 385, ISO 646, ISO 835, ISO 1042 and ISO 4788) include clauses on the definition of capacity; these clauses describe the method of manipulation in sufficient detail to define the capacity without ambiguity. ISO 4787:2010 contains supplementary information.
The procedures in ISO 4787:2010 are applicable to volumetric instruments with nominal capacities in the range of 0,1 ml to 10 000 ml. These include: single-volume pipettes (see ISO 648) without subdivisions; graduated measuring pipettes and dilution pipettes, with partial or complete subdivisions (see ISO 835); burettes (see ISO 385); volumetric flasks (see ISO 1042); and graduated measuring cylinders (see ISO 4788). The procedures are not recommended for testing of volumetric instruments with capacities below 0,1 ml such as micro-glassware.
ISO 4787:2010 does not deal specifically with pyknometers as specified in ISO 3507. However, the procedures specified for the determination of volume of glassware can, for the most part, also be followed for the calibration of pyknometers.

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ISO 4787:2010 provides methods for the testing, calibration and use of volumetric instruments made from glass in order to obtain the best accuracy in use. The International Standards for the individual volumetric instruments (ISO 385, ISO 646, ISO 835, ISO 1042 and ISO 4788) include clauses on the definition of capacity; these clauses describe the method of manipulation in sufficient detail to define the capacity without ambiguity. ISO 4787:2010 contains supplementary information. The procedures in ISO 4787:2010 are applicable to volumetric instruments with nominal capacities in the range of 0,1 ml to 10 000 ml. These include: single-volume pipettes (see ISO 648) without subdivisions; graduated measuring pipettes and dilution pipettes, with partial or complete subdivisions (see ISO 835); burettes (see ISO 385); volumetric flasks (see ISO 1042); and graduated measuring cylinders (see ISO 4788). The procedures are not recommended for testing of volumetric instruments with capacities below 0,1 ml such as micro-glassware. ISO 4787:2010 does not deal specifically with pyknometers as specified in ISO 3507. However, the procedures specified for the determination of volume of glassware can, for the most part, also be followed for the calibration of pyknometers.

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TC - Modifications in Clause 2 and Subclause 6.1.

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TC - Modifications in Clauses 2, 3, 6, C.1 and C.2.

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TC - Modifications in Foreword, Clause 1 and Subclauses 5.2.1, 8.1 and A.1.

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TC - Modifications in Foreword and in Clauses 1, 5, 7 and 8.

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TC - Modifications in Foreword, in Clauses 1, 7 and 8, in Subclause 5.1 and in Table 2.

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TC - Modifications in Foreword and Clauses 1, 5, 7 and 8.

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TC - Modifications in Foreword, Clauses 1 and 3, Annex A and Bibliography.

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TC - Modifications in Foreword, in Clauses 1, 2 and 9 and in Subclause 8.3.

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TC - Modifications in Foreword, Clause 1 and Subclauses 5.2.1, 8.1 and A.1.

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TC - Modifications in Foreword, in Clauses 1, 7 and 8, in Subclause 5.1 and in Table 2.

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TC - Modifications in Foreword, Clauses 1 and 3, Annex A and Bibliography.

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TC - Modifications in Clauses 2, 3, 6, C.1 and C.2.

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TC - Modifications in Clause 2 and Subclause 6.1.

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TC - Modifications in Foreword and in Clauses 1, 5, 7 and 8.

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TC - Modifications in Foreword and Clauses 1, 5, 7 and 8.

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TC - Modifications in Foreword, in Clauses 1, 2 and 9 and in Subclause 8.3.

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Product specification giving metrological requirements including max. permissible errors for one-mark and two-mark single volume pipettes from glass.
The basis of adjustment, volumetric accuracy and capacity are considered and the series of capacities is given specified wit h and without bulbs. The limits of volumetric error, the const ruction and dimensions, delivery time and inscription are defined. The specified details comply with ISO 384.

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ISO 648:2008 specifies metrological and constructional requirements for volumetric pipettes with one mark (total delivery) and for volumetric pipettes with two marks, both of which are adequate for general laboratory purposes.
The details specified are in conformity with the principles of design and construction of volumetric glassware given in ISO 384.

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ISO 648:2008 specifies metrological and constructional requirements for volumetric pipettes with one mark (total delivery) and for volumetric pipettes with two marks, both of which are adequate for general laboratory purposes. The details specified are in conformity with the principles of design and construction of volumetric glassware given in ISO 384.

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ISO 835:2007 specifies metrological and constructional requirements for graduated pipettes, adequate for general laboratory purposes.

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ISO 835:2007 specifies metrological and constructional requirements for graduated pipettes, adequate for general laboratory purposes.

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This standard specifies the  photometric and titrimetric  determination of errors of  measurement of piston-operated  volumetric apparatus. The tests  are applicable to complete  systems comprising the basic  apparatus and all parts selected  for use with the apparatus,  disposable or reusable, involved in  the measurement by delivery  process.These non-gravimetric  test methods can be applied. as  aids to quality assurance by the  supplier, . as routine quality  assurance and routine  calibrations by the user, and. as  routine and post-repair  testing.The methods described in  this part of ISO 8655 are not  applicable as alternatives to the  gravimetric reference test  methods specified in ISO 8655-6,  which gives the only method  suitable as a basis for supplier's  declarations or independent  certification of conformity.NOTE 1  Metrological requirements for  piston-operated volumetric  apparatus, especially maximum  permissible errors, are specified  in ISO 8655-2 to ISO 8655- 5.NOTE 2 For conformity tests or  type tests for declaration and  certification of conformity, see the  gravimetric reference test  methods in ISO 8655-6.

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ISO 21413:2005 develops procedures and prescribes the minimum accuracy required of water-level measurements made in wells using graduated steel tapes, electric tapes and air lines. Procedures and accuracy requirements for measuring water levels in a flowing well are also included, as are procedures required to establish a permanent measuring point. ISO 21413:2005 discusses the advantages and limitations of each method and requirements for recording the data. ISO 21413:2005 does not include methods that use automated electrical or mechanical means to measure and record water levels.

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ISO 8655-7:2005 specifies the photometric and titrimetric determination of errors of measurement of piston-operated volumetric apparatus. The tests are applicable to complete systems comprising the basic apparatus and all parts selected for use with the apparatus, disposable or reusable, involved in the measurement by delivery process.
These non-gravimetric test methods can be applied: as aids to quality assurance by the supplier; as routine quality assurance and routine calibrations by the user; and as routine and post-repair testing.
The methods described in ISO 8655-7:2005 are not applicable as alternatives to the gravimetric reference test methods specified in ISO 8655-6, which gives the only method suitable as a basis for supplier's declarations or independent certification of conformity.
NOTE 1 Metrological requirements for piston-operated volumetric apparatus, especially maximum permissible errors, are specified in ISO 8655-2 to ISO 8655-5.
NOTE 2 For conformity tests or type tests for declaration and certification of conformity, see the gravimetric reference test methods in ISO 8655-6.

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ISO 8655-7:2005 specifies the photometric and titrimetric determination of errors of measurement of piston-operated volumetric apparatus. The tests are applicable to complete systems comprising the basic apparatus and all parts selected for use with the apparatus, disposable or reusable, involved in the measurement by delivery process. These non-gravimetric test methods can be applied: as aids to quality assurance by the supplier; as routine quality assurance and routine calibrations by the user; and as routine and post-repair testing. The methods described in ISO 8655-7:2005 are not applicable as alternatives to the gravimetric reference test methods specified in ISO 8655-6, which gives the only method suitable as a basis for supplier's declarations or independent certification of conformity. NOTE 1 Metrological requirements for piston-operated volumetric apparatus, especially maximum permissible errors, are specified in ISO 8655-2 to ISO 8655-5. NOTE 2 For conformity tests or type tests for declaration and certification of conformity, see the gravimetric reference test methods in ISO 8655-6.

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This International Standard provides metrological and construction requirements for an internationally acceptable series of burettes, suitable for general laboratory purposes.
The details specified are in accordance with the principles of design and construction of volumetric glassware given in ISO 384.
For piston burettes, see ISO 8655-3.

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ISO 4788:2005 specifies dimensions, material and constructional and metrological requirements of graduated measuring cylinders of tall form (Type 1a and Type 1b) and of squat form (Type 2). All types are suitable for general laboratory use.
The specifications in ISO 4788:2005 are in conformity with the principles of design and construction of volumetric glassware given in ISO 384.

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ISO 4788:2005 specifies dimensions, material and constructional and metrological requirements of graduated measuring cylinders of tall form (Type 1a and Type 1b) and of squat form (Type 2). All types are suitable for general laboratory use.
The specifications in ISO 4788:2005 are in conformity with the principles of design and construction of volumetric glassware given in ISO 384.

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ISO 4788:2005 specifies dimensions, material and constructional and metrological requirements of graduated measuring cylinders of tall form (Type 1a and Type 1b) and of squat form (Type 2). All types are suitable for general laboratory use. The specifications in ISO 4788:2005 are in conformity with the principles of design and construction of volumetric glassware given in ISO 384.

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