These tests measure the leakage current through oil. This is a measure of the degree of deterioration or contamination of that oil by soluble polar products and/or ageing products/colloids (resulting from oxidation of the oil it self or from the solution in the oil of external contaminants or materials used in the construction of the […]
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This test method covers the visual determination of the color and appearance of a wide variety of petroleum products.Color and Appearance shall be evaluated by examining a representative sample of the oil in transmitted light under a thickness of approximately 10 cm and at ambient temperature. The result indicated the sediment by visual.
Sediment is any substance which is insoluble after dilution of the oil with organic solvent (n-heptane). Precipitable sludge is oil deterioration products or contaminants. Sediment and sludge are insoluble after dilution of the oil with organic solvent (n-heptane) under prescribed conditions. Both sediment and sludge insoluble in the solvent mixture (alcohol, toluene and acetone)
The oil to be tested, through which a stream of oxygen is bubbled, is maintained for a carefully measured period at a temperature of 100Â degree C in the presence of metallic cooper. The degree of oxidation is estimated by determining theÂ amount of sludge and the neutralization value.