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GB/T 8156.9-1987 Methods for chemical analysis of aluminium fluoride for industrial use--The molybdenum blue photometric method for the determination of phosphorus content $180.00 via email in 1~3 business day abolished
GB/T 8157-1987 Preparation and storage of test samples of sodium fluoride $180.00 via email in 1~3 business day superseded
GB/T 8158.1-1987 Methods for chemical analysis of sodium fluoride--The gravimetric method for the determination of moisture content $180.00 via email in 1~3 business day superseded
GB/T 8158.2-1987 Methods for chemical analysis of sodium fluoride--The distillation nitric thorium volumetric method for determination of fluorine content $180.00 via email in 1~3 business day superseded
GB/T 8158.3-1987 Methods for chemical analysis of sodium fluoride--The molybdenum blue photometric method for the determination of silica content $180.00 via email in 1~3 business day superseded
GB/T 8158.4-1987 Methods for chemical analysis of sodium fluoride--The 1, 10-phenanthroline spectro photometric method for the determination of iron content $180.00 via email in 1~3 business day superseded
GB/T 8158.5-1987 Methods for chemical analysis of sodium fluoride--The turbidimetric method for the determination of soluble sulphates content $180.00 via email in 1~3 business day superseded
GB/T 8158.6-1987 Methods for chemical analysis of sodium fluoride--The gravimetric method for the determination of carbonate content $180.00 via email in 1~3 business day superseded
GB/T 8158.7-1987 Methods for chemical analysis of sodium fluoride--The neutral titration for the determination of acidity $180.00 via email in 1~3 business day superseded
GB/T 8158.8-1987 Methods for chemical analysis of sodium fluoride--The gravimetric method for the determination of water-insoluble matter $180.00 via email in 1~3 business day superseded
GB/T 8158.9-1987 Methods for chemical analysis of sodium fluoride--The turbidimetric method for the determination of chloride content $180.00 via email in 1~3 business day superseded
HB 5219.1-1998 Methods for Chemical Analysis of Magnesium Alloy - Determination of Copper Content with BCO Spectrophotometric Method $45.00 via email in 1~3 business day valid
HB 5219.10-1998 Methods for Chemical Analysis of Magnesium Alloy - Determination of Nickel Content with Dimethylglyoxime Extraction Spectrophotometric Method $45.00 via email in 1~3 business day valid
HB 5219.11-1998 Methods for Chemical Analysis of Magnesium Alloy- Determination of Nickel Content Through Atomical Absorption Spectrometry $45.00 via email in 1~3 business day valid
HB 5219.12-1998 Methods for Chemical Analysis of Magnesium Alloy - Tri-n-octyl Amine Extraction - Determination of Zinc Content with EDTA Volumetric Method $45.00 via email in 1~3 business day valid
HB 5219.13-1998 Methods for Chemical Analysis Ofmagnesium Alloy - Determination of Zinc Content Through Atomical Absorption Spectrometry $45.00 via email in 1~3 business day valid
HB 5219.14-1998 Methods for Chemical Analysis of Magnesium Alloy- Determination of Zirconium Content with EDTA Volumetric Method $60.00 via email in 1~3 business day valid
HB 5219.15-1998 Methods for Chemical Analysis of Magnesium Alloy- Determination of Dissolved Zirconium Content with Quercetin Spectrophotometric Method $45.00 via email in 1~3 business day valid
HB 5219.16-1998 Methods for Chemical Analysis of Magnesium Alloy - Determination of Aluminium Content with EDTA Volumetric Method $60.00 via email in 1~3 business day valid
HB 5219.17-1998 Methods for Chemical Analysis of Magnesium Alloy - Determination of Aluminium Content with Chromazurine S Spectrophotometric Method $45.00 via email in 1~3 business day valid
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