EPA Method 8240 Purgeable Halocarbons Back Catalog number: 43002 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 19222 EPA Method 8070 - Nitrosamines Price on request 11738.12-100-IO 2,2',3,3',6,6'-Hexachlorobiphenyl ,100 µg/mL,isooctane,1mL, Price on request 55213 Medical Marijuana Heavy Metals Price on request