Test methods of basic chemicals, catalog, Chinese national standards
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GB/T 210.2 Specification and determination methods of sodium carbonate for industrial use - Part 2: Specification and determination methods
GB/T 1926.2 Technical furfural test methods
GB/T 2441.2 Determination of urea - Part 2: Biuret content - Spectrophotometric method
GB/T 2441.3 Determination of urea - Part 3: Water content - Karl Fischer method
GB/T 2441.4 Determination of urea - Part 4: Iron content 1,10-Phenanthroline spectrophotometric method
GB/T 2441.5 Determination of urea - Part 5: Alkalinity - Titrimetric method
GB/T 2441.6 Determination of urea - Part 6: Water insoluble matter content - Weight method
GB/T 2441.7 Determination of urea - Part 7: Particle size - Sieve method
GB/T 2441.8 Determination of urea - Part 8: Sulphate content - Visible turbidimetric method
GB/T 2441.9 Determination of urea - Part 9: Methylenediurea content - Spectrophotometric method
GB/T 2601 The chromatographic method for determination of content of hydroxybenzene
GB/T 2602 Method for the urea determination of m-cresol content of phenol products
GB/T 2947 Determination of free water in urea and ammonium nitrate by karl fischer method
GB/T 3711 Method of determination for neutral oils and pyridine bases contents of phenol products
GB/T 4348.1 Sodium hydroxide for industrial use - Determination of sodium hydroxide and sodium carbonate content
GB/T 4348.2 Sodium hydroxide for industrial use - Determination of sodium chloride content - Mercurimetric method
GB/T 4348.3 Sodium hydroxide for industrial use - Determination of iron content - 1,10-phenanthroline photometric method
GB/T 6324.3 Test method of organic chemical products - Part 3: Determination of permanganate-reducing substances
GB/T 6286 Determination of bulk density for molecular sieve
GB/T 6287 Determination of static absorbed water for molecular sieve
GB/T 6288 Determination of particle size for granular molecular sieve
GB/T 7375 Fluorinated methanes for industrial uses - Determination of purity - Gas chromatography
GB/T 7376 Determination of micro-amounts of water in industrial Fluorinated alkane
GB/T 8770 Determination of dynamic absorbed water for molecular sieve
GB/T 9580 Evaluation of standard reference carbon black
GB/T 16581 Test method for the determination of oxygen index of insulating liquids
GB/T 11200.1 Sodium hydroxide for industrial use - Determination of sodium chlorate content - o-Tolidine spectrometric method
GB/T 11213.1 Sodium hydroxide for chemical fiber use - Determination of sodium hydroxide content
GB/T 11213.2 Sodium hydroxide for chemical fiber use - Determination of sodium chloride content - Spectrometric method
GB/T 11213.4 Sodium hydroxide for chemical fiber use - Determination of silicon content - Reduced molybdosilicate spectrophotometric method
GB/T 11213.5 Sodium hydroxide for chemical fiber use - Determination of sulphate content
GB/T 12684 Methods of test for boron compound for industrial use
GB/T 12717 Test method of acetates for industrial use
GB/T 12827 Standard reference acetylene blank and standard practice for evaluation
GB/T 13216 Test methods for glycerine
GB/T 13550 Molecular sieve 5A and its determination
GB/T 14022.2 Technical furfuryl alcohol test methods
GB/T 14571.1 Ethylene glycol for industrial use - Determination of acidity - Titrimetric method
GB/T 14571.2 Monoethylene glycol for industrial use--Determination of diethylene glycol and triethylene glycol - Gas chromatographic method
GB/T 14571.3 Ethylene glycol for industrial use - Determination of content of total aldehydes present - Spectrophotometric method
GB/T 14571.4 Ethylene glycol for industrial use - Determination of ultraviolet transmittance - Ultraviolet spectrophotometric method
GB/T 15338 Carbon black - Validation of test method precision and bias
GB/T 19281 Analytic method for calcium carbonate
GB/T 19282 Analytic method for lithium hexafluorophosphate
GB/T 20646 Rubber compounding ingredients - p-Phenylenediamine(PPD) antioxidants - Test methods
GB/T 21541 Chlorinated methanes for industrial use - Determination of purity - Gas chromatography
GB/T 23852 Analytical method of thiocyanate for industrial use
GB/T 23940 Analytical methods of persulfate products for industrial use
GB/T 23941 Analytical methods of calcium chloride for industrial use
GB/T 23961 Determination of low carbon aliaphatic amines - Gas chromatographic method
GB/T 24199 Refined pyridine - Determination of pyridine content - Gas chromatographic method
GB/T 27813 Analytical methods of anhydrous potassium fluoride
GB/T 29612 Carbon black - Determination of cadmium, lead, mercury content
GB/T 29643 Sodium hydroxide for industrial use - Laboratory sample - Preparation of the main solution for carrying out certain determinations
GB/T 30303 Test method of methylamines and methylamines water solution for industrial use
GB/T 32612 Textiles - Determination of 2-methoxyethanol and 2-ethoxyethanol
GB/T 32698 Rubber compounding ingredients - Determination of particle size distribution for silica，precipitated，hydrated - Laser diffraction