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  • DS/ISO 3987-2011

    Petroleum products - Determination of sulfated ash in lubricating oils and additives


     

     

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    標準號
    DS/ISO 3987-2011
    發布日期
    2011年01月28日
    實施日期
    2011年01月28日
    廢止日期
    國際標準分類號
    75.100
    發布單位
    DK-DS
    適用范圍
    This International Standard describes a procedure for the determination of the mass percentage of sulfated ash from unused lubricating oils containing additives and from additive concentrates used in compounding.These additives usually contain one or more of the following metals: barium, calcium, magnesium, zinc, potassium, sodium and tin. The elements sulfur, phosphorus and chlorine can also be present in combined form.NOTE 1 For the purposes of this International Standard, the terms ‘%(m/m) and ‘%(V/V)’ are used to represent the mass and volume fractions of a material respectively.Application of this procedure to sulfated ash levels below 0,02 % (m/m) is




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