1、BRITISH STANDARD BS 4993-6: 1980 BS 5050-10: 1980 ISO 3393:1976 Methods of test for Aluminium fluoride for industrial use Part 6: Determination of moisture content (gravimetric method) Methods of test for Cryolite Part 10: Determination of moisture content (gravimetric method) ISO title: Cryolite, n
2、atural and artificial, and aluminium fluoride for industrial use Determination of moisture content Gravimetric method UDC 661.862.36:543.712BS4993-6:1980 were directly represented on the committee entrusted with the preparation of these British Standards: Aluminium Federation British Ceramic Researc
3、h Association Royal Institute of Chemistry Amendments issued since publication Amd. No. Date of issue CommentsBS4993-6:1980 m 2 is the mass, in grams, of the weighing bottle, with its lid, containing the test portion before drying. 7 Test report The test report shall include the following particular
4、s: a) the reference of the method used; b) the results and the method, of expression used; c) any unusual features noted during the determination; d) any operation not included in this International Standard or in the International Standards to which reference is made, or regarded as optional. m 2 m
5、 1 m 0 - 100BS4993-6:1980 & BS 5050-10:1980 2 BSI 11-1999 Annex ISO Publications relating to cryolite, natural and artificial, and aluminium fluoride for industrial use CRYOLITE, NATURAL AND ARTIFICIAL ISO 1619, Preparation and storage of test samples. ISO 1620, Determination of silica content Spect
6、rophotometric method using the reduced molybdosilicate. ISO 1693, Determination of fluorine content Modified Willard-Winter method. ISO 1694, Determination of iron content 1,10-Phenanthroline photometric method. ISO 2366, Determination of sodium content Flame emission and atomic absorption spectroph
7、otometric methods. ISO 2367, Determination of aluminium content 8-Hydroxy-quinoline gravimetric method. ISO 2830, Determination of aluminium content Atomic absorption method. ISO 3391, Determination of calcium content Flame atomic absorption method. ISO 3392, Determination of water content Electrome
8、tric method. ISO 3393, Determination of moisture content Gravimetric method. ISO 4277, Evaluation of free fluorides content Conventional titrimetric method. ISO 4280, Determination of sulphates content Barium sulphate gravimetric method. ALUMINIUM FLUORIDE FOR INDUSTRIAL USE ISO 2362, Determination
9、of fluorine content Modified Willard-Winter method. ISO 2368, Determination of iron content 1,10-Phenanthroline photometric method. ISO 2369, Determination of silica content Spectrophotometric method using the reduced silicomolybdic complex. ISO 2925, Preparation and storage of test sample. ISO 3392
10、, Determination of water content Electrometric method. ISO 3393, Determination of moisture content Gravimetric method. ISO 4279, Determination of sodium content Flame emission spectrophotometric method. ISO 4280, Determination of sulphates content Barium sulphate gravimetric method.BS4993-6:1980 & B
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