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GB/T 23278.8-2009 Methods for chemical analysis of sodium stannate - Part 8: Determination of nitrate content - Ion selective electrode method $100.00 via email in 1~3 business day valid
GB/T 23761-2009 Test method of photocatalytic materials for air purification $180.00 via email in 1~3 business day superseded
GB/T 23762-2009 Test method of photocatalytic materials for purification of water solution $180.00 via email in 1~3 business day superseded
GB/T 23764-2009 Test method of photocatalytic materials for self-cleaning $180.00 via email in 1~3 business day valid
GB/T 23765-2009 Test method of sodium cyanide and potassium cyanide products $240.00 via email in 1~3 business day valid
GB/T 23768-2009 Inorganic chemicals for industrial use - General rules for flame atomic absorption spectrometry $240.00 via email in 1~3 business day valid
GB/T 23769-2009 Inorganic chemical products - General method for the determination of pH values $120.00 via email in 1~3 business day valid
GB/T 23770-2009 Liquid inorganic chemical products - General method for the measurement of colour $180.00 via email in 1~3 business day valid
GB/T 23771-2009 Determination of bulk density for inorganic chemical products $130.00 via email in 1~3 business day valid
GB/T 23772-2009 Inorganic chemicals for industrial use - General method for the determination of total nitrogen content - Nesslers reagent colorimetric method $180.00 via email in 1~3 business day valid
GB/T 23773-2009 Inorganic chemicals for industrial use - General method for determination of ammonium content - Nesslers reagent colorimetric method $180.00 via email in 1~3 business day valid
GB/T 23774-2009 Inorganic chemicas for industrial use - General method for the determination of whiteness $120.00 via email in 1~3 business day valid
GB/T 23834.1-2009 Chemical analysis method for stannous sulfate - Part 1: Determination of stannous sulfate content - Volumetric method of potassium dichromate $120.00 via email in 1~3 business day valid
GB/T 23834.2-2009 Chemical analysis method for stannous sulfate - Part 2: Determination of insoluble substance in hydrochloric acid - Gravimetric method $120.00 via email in 1~3 business day valid
GB/T 23834.3-2009 Chemical analysis method for stannous sulfate - Part 3: Determination of alkali metals sulfate and alkaline-earth metals sulfate - Gravimetric method $120.00 via email in 1~3 business day valid
GB/T 23834.4-2009 Chemical analysis method for stannous sulfate - Part 4: Determination of lead and copper content - Flame atomic absorption spectrometry $120.00 via email in 1~3 business day valid
GB/T 23834.5-2009 Chemical analysis method for stannous sulfate - Part 5: Determination of arsenic content - Silver diethyldithiocarbamate spectrophotometry $120.00 via email in 1~3 business day valid
GB/T 23834.6-2009 Chemical analysis method for stannous sulfate - Part 6: Determination of iron content - 1 10-phenanthroline spectrophotometry $120.00 via email in 1~3 business day valid
GB/T 23835.10-2009 Lithium perchlorate anhydrous - Part 10: Determination of iron content $120.00 via email in 1~3 business day valid
GB/T 23835.11-2009 Lithium perchlorate anhydrous - Part 11: Determination of lead content $120.00 via email in 1~3 business day valid
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