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ISO 3987:2010
M00000306
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ISO 3987:2010 Petroleum products - Determination of sulfated ash in lubricating oils and additives
standard by International Organization for Standardization, 11/15/2010
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ISO 3987:2010 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.