C 373 – 88 R99 ;QZM3MW__.pdf - Designation C 373...

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Designation: C 373 – 88 (Reapproved 1999) Standard Test Method for Water Absorption, Bulk Density, Apparent Porosity, and Apparent Specific Gravity of Fired Whiteware Products 1 This standard is issued under the fixed designation C 373; 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 ( e ) indicates an editorial change since the last revision or reapproval. 1. Scope 1.1 This test method covers procedures for determining water absorption, bulk density, apparent porosity, and apparent specific gravity of fired unglazed whiteware products. 1.2 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 appro- priate safety and health practices and determine the applica- bility of regulatory limitations prior to use. 2. Significance and Use 2.1 Measurement of density, porosity, and specific gravity is a tool for determining the degree of maturation of a ceramic body, or for determining structural properties that may be required for a given application. 3. Apparatus and Materials 3.1 Balance , of adequate capacity, suitable to weigh accu- rately to 0.01 g. 3.2 Oven , capable of maintaining a temperature of 150 6 5°C (302 6 9°F). 3.3 Wire Loop, Halter, or Basket , capable of supporting specimens under water for making suspended mass measure- ments. 3.4 Container —A glass beaker or similar container of such size and shape that the sample, when suspended from the balance by the wire loop, specified in 3.3, is completely immersed in water with the sample and the wire loop being completely free of contact with any part of the container. 3.5 Pan , in which the specimens may be boiled.
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