ASTM C1069 – Standard Test Method for Specific Surface Area of Alumina or Quartz by Nitrogen Adsorption
Significance and Use
4.1 Both sellers and purchasers of alumina and quartz will find the test method useful to determine the specific surface area and indirectly as a measure of the particle size for material specifications, manufacturing control, and research and development.
1.1 This test method covers the determination of the specific surface area of aluminas and silicas used in the manufacture of ceramics. The test method is a general one, permitting the use of any modern commercial nitrogen adsorption apparatus but strictly defining the outgassing procedure. Calculations are based on the Brunauer-Emmett-Teller (BET) equation.
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.