Fuchs Referenzfluessigkeit IRM 903 is a reference oil, IRM REFERENCE OILS per ASTM D 471-06 Description - The ASTM standard test method D 471-06 deals with the effect of liquids on elastomers (“Rubber Property – Effect of Liquids”). Besides describing the procedures for various elastomer tests, it lists standard test liquids with which reference measurements can be performed. The ASTM D 471-06 method divides the standard test liquids into three groups: · IRM reference oils · ASTM reference fuels · ASTM service liquids IRM Reference oils - The reference oils listed under IRM — IRM 901, IRM 902 and IRM 903 — are mineral oils with different paraffin and aromatic concentrations. Basically, the effect on elastomers increases as the content of aromatics increases (swelling behaviour). FUCHS IRM 901 has the lowest aromatic concentration, and IRM 903 has the highest aromatic concentration. The aniline point is generall
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