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Detailed description

Edible oils GB 11133-2015- Determination of water content in petroleum products, lubricants and addi

Detection standard

GB/T 6682-2008#Analysis of laboratory water specifications and test methods # Laboratory water # Oxidizable substances

  • Detection specification


This standard specifies the method for directly determining the water content in petroleum products and hydrocarbon compounds using an automatic titrator. The direct titration method for determining water content ranges from 10mg/kg to 25000mg/kg. This standard also specifies a method for indirectly determining the water content of the sample. The water in the sample is separated by heating, and then transported to a Karl Fischer titrator for analysis by a dry gas carrier. Interference of thiols, sulfides, sulfur, and other compounds with the test method This standard is applicable to the determination of water content in additives, lubricants, base oils, automatic transmission fluids, hydrocarbon solvents, and other petroleum products using commercially available Karl Fischer Coulomb reagents. By selecting the appropriate sample injection amount, the water content measurement range of this standard ranges from milligrams per kilogram level to mass percentage level

Normative references

The following documents are essential for the application of this document.

. For dated references, only the dated version applies to this document. For undated references, the latest version (including all modification orders) applies to this document

GB/T 1884 Laboratory Determination of Density of Crude Oil and Liquid Petroleum Products (Densimeter Method) (GB/T 1884-2000-eqv ISO 3675:1998)

GB/T 1885 Petroleum Measurement Tables (GB/T 1885-1998, eqv ISO 91-2:1991)

GB/T 4756 Manual Sampling Method for Petroleum Liquids (GB/T 4756-1998, eqv ISO 3170:1988)

GB/T 6682 Specification and Test Methods for Analytical Laboratory Water (GB/T 6682-2008, ISO 3696:1987, MOD)

SH/T 0604 Method for Determining the Density of Crude Oil and Petroleum Products (U-shaped Vibrating Tube Method) (SH/T 0604-2000, eqv ISO 12185:1996)

ASTM D5854 Standard Practice for Mixing and Handling of Liquid Samples of Petroleum and Petroleum Products

ASTM E203 Standard Method for Determining Water Content (TestMethodforWaterUsingVolumetric Karl Fischer Titration)

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