ASTM C562-15

Standard Test Method for Moisture in a Graphite Sample

SIGNIFICANCE AND USE
4.1 This test method is applicable only for determination of the volatile moisture content resulting from adsorption of water vapor from the atmosphere, and is not intended to give representative moisture data for graphite that has been exposed to liquid water contamination.
SCOPE
1.1 This test method provides a practical determination for the percentage of moisture in a graphite sample.  
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 and health practices and determine the applicability of regulatory limitations prior to use.

General Information

• Status: Historical
• Publication Date: 30-Sep-2015
• ICS: 71.060.10 - Chemical elements
• Technical Committee: D02 - Petroleum Products, Liquid Fuels, and Lubricants
• Drafting Committee: D02.F0 - Manufactured Carbon and Graphite Products

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: C562 − 15
Standard Test Method for
1
Moisture in a Graphite Sample
This standard is issued under the fixed designation C562; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope* 5.1.1 Type and condition of desiccant.
5.1.2 Ambient relative humidity at the time of the test.
1.1 This test method provides a practical determination for
5.1.3 Timing and procedure for moving samples from des-
the percentage of moisture in a graphite sample.
iccator to the balance.
1.2 The values stated in SI units are to be regarded as
5.1.4 Adsorptivity of the graphite sample relative to the
standard. No other units of measurement are included in this
adsorptivity of the desiccant used.
standard.
5.1.5 Residency time in the desiccator.
1.3 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
6. Apparatus
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica-
6.1 Alumina Ceramic or Platinum Crucible or Dish, suit-
bility of regulatory limitations prior to use.
able for holding sample (subsequently called sample holder).
6.2 Analytical Balance, capable of weighing to 60.0002 g.
2. Referenced Documents
2
6.3 Drying Oven, air convection type, capable of being
2.1 ASTM Standards:
C561 Test Method for Ash in a Graphite Sample controlled to 110 °C 6 2 °C.
6.4 Desiccator, charged with indicating desiccant.
3. Terminology
3.1 Definitions:
7. Sampling
3.1.1 moisture content, n—percentage content by weight of
7.1 Samples may be solid or particulate. Solid bodies may
volatile moisture present in the graphite specimen that has been
be sampled by removing one or more solid pieces from the
exposed to ambient conditions.
body by, for example, sawing, turning, milling, or fracturing.
4. Significance and Use
Particulate samples may be generated from solid bodies by
drilling, using a carbide drill to minimize contamination, or by
4.1 This test method is applicable only for determination of
other crushing and grinding methods.
the volatile moisture content resulting from adsorption of water
vapor from the atmosphere, and is not intended to give
8. Procedure
representative moisture data for graphite that has been exposed
to liquid water contamination.
8.1 Tare a dried sample holder using an analytical balance.
Weigh a 25 g to 50 g sample into the tared sample holder and
5. Interferences
reweigh both. (Perform all weighings to a precision of
5.1 Final weights (and therefore percent moisture values)
60.002 g.)
may be influenced by the following:
8.2 Place the sample holder containing the sample in a
drying oven maintained at 110 °C 6 2 °C for 2 h. Remove
1
This test method is under the jurisdiction of ASTM Committee D02 on
from the oven and immediately place in the desiccator. When
Petroleum Products, Liquid Fuels, and Lubricants and is the direct responsibility of
the sample has reached room temperature, remove from the
Subcommittee D02.F0 on Manufactured Carbon and Graphite Products.
desiccator and weigh immediately.
Current edition approved Oct. 1, 2015. Published November 2015. Originally
ɛ1
approved in 1965. Last previous edition approved in 2010 as C562 – 91(2010) .
8.3 Repeat the procedure prescribed in 8.2 until a constant
DOI: 10.1520/C0562-15.
2
weight of 60.002 g is achieved.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
8.4 The dried sample may be reserved for ash determina-
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. tion. (See Test Method C561.)
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

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C562 − 15
9. Calculation samples split from a common sample which was ground to pass
a No. 60 (250 µm) sieve. This sampling method was used for
9.1 Calculate the percentage of moisture content as follows:
the round robin to minimize variations among samples pro-
Moisture, % 5 @~ B 2 C!/~B 2 A!# 3 100
vided to participating laboratories.
where:
11.2 On this sample the mean, standard deviation between
A = weight of sample holder,
laboratories and standard deviation within laboratories were,
B = weight of sample holder and sample, and
respectively:
C = weight of sample
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
´1
Designation: C562 − 91 (Reapproved 2010) C562 − 15 An American National Standard
Standard Test Method for
1
Moisture in a Graphite Sample
This standard is issued under the fixed designation C562; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1
ε NOTE—Updated units of measure throughout the standard editorially in May 2010.
1. Scope Scope*
1.1 This test method provides a practical determination for the percentage of moisture in a graphite sample.
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 and health practices and determine the applicability of regulatory
limitations prior to use.
2. Referenced Documents
2
2.1 ASTM Standards:
C561 Test Method for Ash in a Graphite Sample
3. Terminology
3.1 Definitions:
3.1.1 moisture content, n—percentage content by weight of volatile moisture present in the graphite specimen that has been
exposed to ambient conditions.
4. Significance and Use
4.1 This test method is feasibleapplicable only for determination of the volatile moisture present on the graphite due to
adsorption from the atmospherecontent resulting from adsorption of water vapor from the atmosphere, and is not intended to give
representative moisture data for graphite that has been exposed to liquid water contamination.
5. Interferences
5.1 Final weights (and therefore percent moisture values) may be influenced by the following:
5.1.1 Type and condition of desiccant.
5.1.2 Ambient relative humidity at the time of the test.
5.1.3 Timing and procedure for moving samples from desiccator to the balance.
5.1.4 Adsorptivity of the graphite sample relative to the adsorptivity of the desiccant used.
5.1.5 Residency time in the desiccator.
6. Apparatus
6.1 Alumina Ceramic or Platinum Crucible or Dish, suitable for holding sample (subsequently called sample holder).
6.2 Analytical Balance, capable of weighing to 60.0002 g.60.0002 g.
6.3 Drying Oven, air convection type, capable of being controlled to 110110 °C 6 2°C.2 °C.
6.4 Desiccator, charged with indicating desiccant.
1
This test method is under the jurisdiction of ASTM Committee D02 on Petroleum Products Products, Liquid Fuels, and Lubricants and is the direct responsibility of
Subcommittee D02.F0 on Manufactured Carbon and Graphite Products.
Current edition approved May 1, 2010Oct. 1, 2015. Published May 2010November 2015. Originally approved in 1965. Last previous edition approved in 20052010 as
ɛ1
C562–91(2005).C562 – 91(2010) . DOI: 10.1520/C0562-91R10E01.10.1520/C0562-15.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
C562 − 15
7. Sampling
7.1 Samples may be solid or particulate. Solid bodies may be sampled by removing one or more solid pieces from the body by,
for example, sawing, turning, milling, or fracturing. Particulate samples may be generated from solid bodies by drilling, using a
carbide drill to minimize contamination, or by other crushing and grinding methods.
8. Procedure
8.1 Tare a dried sample holder using an analytical balance. Weigh a 2525 g to 50-g50 g sample into the tared sample holder and
reweigh both. (Perform all weighings to a precision of 60.002 g.)
8.2 Place the sample holder containing the sample in a drying oven maintained at 110110 °C 6 2°C2 °C for 2 h. 2 h. Remove
from the oven and immediately place in the desiccator. When the sample has reached room temperature, remove from the
desiccator and weigh immediately.
8.3 Repeat the procedure prescribed in 7.28.2 until a constant weight of 60.002 g 60.002 g is achieved.
8.4 The dried sample may be reserved for ash det
...