ISO 3735:1999 PDF

Scope: This International Standard specifies a method for the determination of sediment in crude petroleum and fuel oils by extraction with toluene. The precision applies to a range of sediment levels from 0,01 % (m/m) to 0,40 % (m/m), although higher levels may be determined. NOTE 1 If this International Standard is applied to crude petroleum samples containing significant amounts of salts, an overestimation of the sediment content may be obtained because a proportion of the inorganic salts may be trapped in the extraction thimble. This problem is generally not significant for crude petroleum samples containing less than 0,1 % (mlm) total salts. NOTE 2 For the purposes of this International Standard, the terms "% (m/m)" and "% (V/V)" are used to represent the mass and volume fractions of materials, respectively.

ISO 3735:1999 history

1999 ISO 3735:1999 Crude petroleum and fuel oils - Determination of sediment - Extraction method
1975 ISO 3735:1975 Crude petroleum and fuel oils; Determination of sediment; Extraction method