EPA Method 624 Internal / Surrogate Standard Back Catalog number: 92559 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 677077 Diniconazole, 100 µg/ml, Acetone, 5ml Price on request C16065000 Phenylmercury-chloride, certified, 0.25g Price on request 32751 2,3-Dimethylpentane Price on request