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Copper corrosion test is a qualitative method that is used to determine the level of corrosion of fuel products and is well suited for specification settings, internal quality control tools and development and research on hydrocarbons. It also detects the presence of harmful corrosive substances, like acidic or sulfur compounds.
In this test, a polished copper strip is suspended in the product and its effect observed. A polished copper strip is immersed into the sample at elevated temperature, Both the time and temperature conditions can be varied according to your product application. After the test period, the technician will remove the copper strip from the grease, wiping off the excess grease and then washing the copper coupon with acetone. The copper strip is then visually compared to the Copper Strip Corrosion Standards. This test is subjective as the results are determined by the eyes of the individual technician performing the test. Technicians of Alfa Chemistry are highly skilled in this test as they have conducted countless copper corrosion tests. The Color and tarnish level according to the ASTM Copper Strip Corrosion Standard is showed in Fig.1.
Fig. 1 Color and tarnish level according to the ASTM Copper Strip Corrosion Standard
The chemists at Alfa Chemistry have extensive experience in the testing of chemical substances. We are committed to the detection of copper corrosion. Our instruments comply with ASTM D130, ASTM D4048, EN ISO 2160 and other standards. Please feel free to contact us for more details.