EPA Method 624 Internal / Surrogate Standard Back Catalog number: 92559 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 72192 Lanosterol Price on request 673488 Bromophos-methyl, 10.0 µg/ml, Ethyl acetate, 10m Price on request 673343 Mepanipyrim, 100 µg/ml, Acetonitrile, 5ml Price on request