This instrument is designed and manufactured in accordance with the latest standard GB/T 33400-2016 "Determination of Total Pollutant Content in Middle Distillates, Diesel and Fatty Acid Methyl Esters". The method for determining the total pollutant content in diesel and pure fatty acid methyl ester (BD100) with a volume fraction of no more than 30% specified in the standard for middle distillate oil and fatty acid methyl ester. It is also used for samples with a viscosity not exceeding 8 mm2/s at 20 ℃ or 5 mm2/s at 40 ℃, as well as samples with a total pollutant content of 12 mg/kg to 30 mg/kg, and precision is specified; It also applies to samples with total pollutant content exceeding this range, but its precision is not specified. It is a commonly used product for refining enterprises and testing institutions to determine the total pollutant content in diesel