ASTM C471M-16

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Designation: C471M − 16
StandardTest Methods for
Chemical Analysis of Gypsum and Gypsum Products
1
(Metric)
This standard is issued under the fixed designation C471M; 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.
1. Scope* 1.3 The text of this standard references notes and footnotes
that provide explanatory material. These notes and footnotes
1.1 These test methods cover the chemical analysis of
(excluding those in tables and figures) shall not be considered
gypsum and gypsum panel products, including gypsum ready-
as requirements of the standard.
mixed plaster, gypsum wood-fibered plaster, and gypsum
concrete. 1.4 The values stated in SI units are to be regarded as the
standard.
1.2 The test methods appear in the following order:
1.5 This standard does not purport to address all of the
Sections
Preparation of Sample 4 safety concerns, if any, associated with its use. It is the
Complete Procedure 5–16
responsibility of the user of this standard to establish appro-
Alternative Procedure for Analysis of 17
priate safety and health practices and determine the applica-
Free Water in Gypsum Using a Mois-
ture Balance
bility of regulatory limitations prior to use.
Alternative Procedure for Analysis of 18
Combined Water in Gypsum Using a
2. Referenced Documents
Moisture Balance
2
Alternative Procedure for Analysis for 19
2.1 ASTM Standards:
Calcium Sulfate by Ammonium Acetate
C11 Terminology Relating to Gypsum and Related Building
Method
Alternative Procedure for Analysis for 20 Materials and Systems
Sodium Chloride by the Coulometric
C22/C22M Specification for Gypsum
Method
C28/C28M Specification for Gypsum Plasters
Determination of Sand in Set Plaster 21
Wood-Fiber Content in Wood-Fiber Gyp- 22 C59 Specification for Gypsum Casting Plaster and Gypsum
sum Plaster
Molding Plaster
Optional Procedure for Analysis for So- 23
C61 Specification for Gypsum Keene’s Cement
dium by the Atomic Absorption Method
Optional Procedure for Analysis for So- 24 C317/C317M Specification for Gypsum Concrete
dium by Flame Photometry
C778 Specification for Standard Sand
Determination of Orthorhombic Cyclooc- 25
C842 Specification forApplication of Interior Gypsum Plas-
tasulfur (S ) in Ggypsum Panel
8
Products—General Provisions
ter
Determination of Orthorhombic Cyclooc- 26
D1193 Specification for Reagent Water
tasulfur (S ) in Gypsum Panel Prod-
8
D1428 Test Method for Test for Sodium and Potassium In
ucts by Gas Chromatograph Equipped
with a Mass Spectrometer (GS/MS)
Water and Water-Formed Deposits by Flame Photometry
Determination of Orthorhombic Cyclooc- 27 3
(Withdrawn 1989)
tasulfur (S ) in Gypsum Panel Prod-
8
D2013 Practice for Preparing Coal Samples for Analysis
ucts by Gas Chromatograph Equipped
with an Electron Capture Detector
E11 Specification for Woven Wire Test Sieve Cloth and Test
(GC/ECD)
Sieves
Determination of Orthorhombic Cyclooc- 28
tasulfur (S ) in Gypsum Panel Prod-
8
3. Terminology
ucts by High-performance Liquid Chro-
matograph Equipped with and
3.1 Definitions—Definitions shall be in accordance with
Ultraviolet Detector (HPLC/UV)
Terminology C11.
1
These test methods are under the jurisdiction of ASTM Committee C11 on
2
Gypsum and Related Building Materials and Systems and are the direct responsi- For referenced ASTM standards, visit the ASTM website, www.astm.org, or
bility of Subcommittee C11.01 on Specifications and Test Methods for Gypsum contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Products. Standards volume information, refer to the standard’s Document Summary page on
Current edition approved Jan. 1, 2016. Published January 2016. Originally the ASTM website.
3
approved in 1961. Last previous edition approved in 2014 as C471 – 14. DOI: The last approved version of this historical standard is referenced on
10.1520/C0471M-16. www.astm.org.
*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
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C471M − 16
3.2 Definitions: the dried sample. Reduce the sample in accordance with 4.1.5.
3.2.1 calibration standard, n—a chemical mixture contain- Thoroughly blend and rehydrate the specimen in accordance
ing a known quantity of the analyte used to relate the measured with 4.1.4
analytical signal to the concentration of the analyte. 4.3.2 Gypsum Neat Plaster or Gypsum Gauging Plaster—
Reduce the dried sample in accordance with 4.1.5. Thoroughly
3.2.2 dried sample, n—a sample devoid of free water.
blend and re
...