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Natural gas - Hydrogen sulphide in natural gas - Methylene blue method
90.93 Standard confirmed
Natural gas - Total sulphur content - Determination by hydrogenation
90.93 Standard confirmed
Hydrogen sulfide and mercaptan sulfur in natural gas - Cadmium sulfate iodometric titration method
90.93 Standard confirmed
Reagents - Preparation, standardization and storage of standard volumetric solutions for chemical analysis
90.93 Standard confirmed
Reagents - Preparation and storage of standard reference buffer solutions for calibration of pH-meters
90.93 Standard confirmed
Reagents - Density-composition tables for aqueous solutions of sulphuric acid
90.93 Standard confirmed
Reagents - Density-composition tables for aqueous solutions of nitric acid
90.93 Standard confirmed
Reagents - Density-composition tables for aqueous solution of sodium hydroxide
90.93 Standard confirmed
Reagents - Preparation and storage of standard solutions for colorimetric, spectrophotometric, flame photometric and flame atomic absorption analysis, like and other kind of analysis
90.93 Standard confirmed
Reagents - Preparation and storage of indicator solutions for chemical (volumetric) analysis
90.93 Standard confirmed
Reagents - Sodium acetate trihydrate - Technical requirements
60.60 Standard published
Reagents - Lead(II)acetate trihydrate - Technical requirements
60.60 Standard published
Reagents - Sodium acetate, anhydrous - Technical requirements
60.60 Standard published
Reagents - Copper sulphate pentahydrate - Technical requirements
60.60 Standard published
Pure chemicals - Ferrous ammonium sulphate (Mohr's salt)
60.60 Standard published