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Gases - Determination of nitrogen content - Indirect method
90.93 Standard confirmed
Gases - Determination of argon content in argon - Indirect method
90.93 Standard confirmed
Gases - Determination of carbon-dioxide content - Absorption method
90.93 Standard confirmed
Gases - Determination of carbon-dioxide content - Infrared spectrophotometric method
90.93 Standard confirmed
Gases - Determination of hydrogen content - Indirect method
90.93 Standard confirmed
Gases - Acetylene - Determination of acetylene content - Method absorption of acetylene in water
90.93 Standard confirmed
Gases - Determination of carbon monoxide - Absorption method
90.93 Standard confirmed
Gases - Determination of water content - Gravimetric method
90.93 Standard confirmed
Gases - Acetylene - Determination of content of hydrogen sulphide - Volumetric method
90.93 Standard confirmed
Gases - Acetylene - Determination of phosphor-hydrogene content - Volumetric method
90.93 Standard confirmed
Gases - Determination of hydrocarbons content - Infrared spectrophotometric method
90.93 Standard confirmed
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