This standard specifies the requirements, test methods, inspection rules, packaging, labeling, storage and transportation of 4A molecular sieves. This standard applies to 4A molecular sieve spherical and strip products, 4A molecular sieve raw powder, and 4A molecular sieve activated powder. It is mainly used for drying various chemical gases and liquids, refrigerants, pharmaceuticals, electronic materials, and automobile brake systems.
HG/T 2524-2010 Referenced Document
GB/T 14563 Specification and test method of kaolin clay*, 2020-06-02 Update
GB/T 191 Packaging.Pictorial marking for handling of goods
GB/T 603 Preparation of preparations and products used in chemical reagent test methods*, 2023-08-06 Update
GB/T 6286 Determination of bulk density for molecular sieve*, 2021-08-20 Update
GB/T 6287 Determination of static adsorbed water for molecular sieve*, 2021-08-20 Update
GB/T 6288 Determination of particle size for granular molecular sieve*, 2021-08-20 Update
GB/T 6679-2003 General rules for sampling solid chemical products
GB/T 6682 Water for analytical laboratory use.Specification and test methods
GB/T 8170-2008 Rules of rounding off for numerical values & expression and judgement of limiting values
HG/T 2783 Test method for crushing resistance of molecular sieves*, 2020-12-09 Update