Bl This standard establishes the method for the determination of asphaltenes in gasoil, diesel oil, diesel fuel oil, lubricating oils, petroleum asphaltenes and crude oil in which the fraction has been distilled up to 260 C. B-2 The application of this method is not advisable in the case of lubricating oils that contain additives, since erroneous results may be obtained,
IRAM 6606-1959 history
1959IRAM 6606-1959 How to determine asphaltene precipitation in petroleum products