EPA Method 508 Surrogate Standard Back Catalog number: 19042 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 93608 525Mix Price on request 30067R EPA Method 502/524 High Conc VOC Mixes Price on request 11719.12-100-IO 2,2',4,5,6'-Pentachlorobiphenyl ,100 µg/mL,isooctane,1mL, Price on request