Interference Standard 4 Back Catalog number: 52041 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 20035 CLP Program - Acid Surrogate Standard Price on request 675244 Paraoxon-methyl, 100 µg/ml, Acetonitrile, 5ml Price on request MTPP 13C18-Triphenyl phosphate, 1.2ml x 50ug/ml, toluene Price on request