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ASTM D4952 Active Sulfur Doctor Test Package for Petroleum Products
KN-4952 Active Sulfur Doctor Test for Petroleum Products conforms to the ASTM D4952 Standard Test Method for Qualitative Analysis for Active Sulfur Species in Fuels and Solvents (Doctor Test) and ISO 5275 Petroleum products and hydrocarbon solvents — Detection of thiols and other sulfur species — Doctor test.Sulfur present as mercaptans or as hydrogen sulfide in distillate fuels and solvents can attack many metallic and non-metallic materials in fuel and other distribution systems. A negative result in the doctor test ensures that the concentration of these compounds is insufficient to cause such problems in normal use.
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