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KN-511 Mechanical Impurities Tester
KN-511 Mechanical Impurities Tester conforms to GB/T 511 Petroleum, Petroleum Products and Additives – Method for Determination of Mechanical Admixtures. It applies to test the mechanical impurities of petroleum products and additives by using gravimetric method
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ASTM D974 Apparatus for Acid and Base Number by Color Indicator Titration
KN-974 Apparatus for Acid and Base Number by Color Indicator Titration conforms to ASTM D974 Standard Test Method for Acid and Base Number by Color-Indicator Titration. New and used petroleum products can contain basic or acidic constituents that are present as additives or as degradation products formed during service, such as oxidation products. The relative amount of these materials can be determined by titrating with acids or bases. This number, whether expressed as acid number or base number, is a measure of this amount of acidic or basic substances, respectively, in the oil—always under the conditions of the test. This number is used as a guide in the quality control of lubricating oil formulations. It is also sometimes used as a measure of lubricant degradation in service; however, any condemning limits must be empirically established.
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