WA VPH Marker Standard Back Catalog number: 51141 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 52330 EPA Method 200.8 - Analytes Price on request 683418 Ethyl perfluoro(2-methyl-3-oxahexanoate), 10mg Price on request 71393 2,4,6-Trinitrotoluene Price on request