Industry Reference Materials (IRM) are standard compounding ingredients used to achieve better agreement with standard ASTM recipes and inter-laboratory test comparisons. Also, certain IRMs are used to compare inter-laboratory results for rubber processability tests.

The Following IRMs Are Currently Available From ARDL:
        • IRM-002 Benzothiazyl Disulfide (MBTS)
        • IRM-003 TBBS
        • IRM-021 Stearic Acid
        • IRM-031 Sulfur
        • IRM-241 Butyl Rubber
        • IRM-913 Ammoniated Latex Antigenic Protein (NR Protein)
        • IRM-914 Anti-AL Antisera