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ASTM C867-94

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Standard Test Method for Soluble Sulfate in Ceramic Whiteware Clays (Photometric Method)

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1.1 This test method covers the determination of soluble sulfate ions present in water or a filtrate by means of a photometer measuring the turbidity of precipitated barium sulfate. A method of standardizing the photometer for this test method is also given.

1.2 Soluble sulfate ions may be removed from clays or clay-water slurries by leaching with water during mixing and subsequent filter pressing. To remove all the sulfate ions would require an impractical number of washings; therefore, this test method should be considered a control test and not a quantitative analysis for SO4 ions.

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.


SDO ASTM: ASTM International
Document Number C867
Publication Date Jan. 1, 2000
Language en - English
Page Count 3
Revision Level 94
Supercedes
Committee C21.04
Publish Date Document Id Type View
Jan. 1, 2000 C0867-94 Revision
May 1, 2022 C0867-94R22 Reaffirmation
Jan. 1, 2014 C0867-94R14 Reaffirmation
May 1, 2007 C0867-94R07 Reaffirmation
Jan. 1, 2000 C0867-94R00 Reaffirmation