EPA Method 632 Spike Standard Back Catalog number: 93970 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 14258.5-K-ME Ethylisopropylnitrosamine, 1000μg/ml in MeOH, 1ml Price on request 674981 Cyhalofop-butyl, 50mg Price on request 38131 WS Paraquat & Diquat Price on request