EPA Method 508 Surrogate Standard Back Catalog number: 19042 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 91334 Semi-Volatile Mix #1 Price on request S-11197U1-1ML BHC (epsilon isomer), 100ug/ml in Toluene, 1ml Price on request 15900-2820-100AN5 Imazamethabenz-methyl, 100µg/ml in AL, 5ml Price on request