Compliance With Following National / International Standards: IP 13, ASTM D189, ASTM D2416 It is used to determine the amount of carbon deposit, when oil is evaporated under specified condition. The Carbon Residue values of crude oil, residue etc. are useful in the manufacturimg of various lubricants. Further details available on our website. The Price mentioned here are subject to change as per the capacity, specifications and application of the user.