ASTM D1993-03被替代
Standard Test Method for Precipitated Silica-Surface Area by Multipoint BET Nitrogen Adsorption
出版：American Society for Testing and Materials
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基本信息
标准编号： ASTM D1993-03
发布时间：2003/1/10 0:00:00
标准类别：Standard
出版单位：American Society for Testing and Materials
标准页数：3
标准简介
CONTAINED IN VOL 09.01, 2005Describes a procedure which is used to measure the surface area of precipitated hydrated silicas by the conventional Brunauer, Emmett, and Teller (BET) theory of multilayer gas adsorption behavior usingmultipoint determinations, similar to that used for carbon black in Test Methods D4820. Specifies the sample preparation and treatment, instrument calibrations, required accuracy and precision of experimental data, and calculations of the surface area results from the obtained data.
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