Retention Time Verification Standard Back Catalog number: 51172 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 685660 Bentazone-methyl, 100µg/ml in Acetonitrile, 5ml Price on request TOTP Tri-o-tolyl phosphate, 1.2ml x 50ug/ml, toluene Price on request 79079 EPA Method 8330 Analyte Price on request