General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
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GB/T 28601-2012
Scope
WARNING: Personnel using this standard should have practical experience in formal laboratory work. This standard does not address all possible safety issues. It is the user's responsibility to take appropriate safety and health measures and ensure compliance with the conditions stipulated in the relevant national laws and regulations. Scope: This standard specifies the method for the determination of gel content by test sieves. This standard applies to precipitated hydrated silica.
GB/T 28601-2012 Referenced Document
GB/T 6003.1 Test sieves—Technical requirements and testing—Part 1:Test sieves of metal wire cloth*, 2022-10-12 Update
GB/T 8170 Rules of rounding off for numerical values & expression and judgement of limiting values