EPA Method 525.2 Pesticide Level 5 Back Catalog number: 92842 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 11760.12-100-IO 2,2',3,3',5,6,6'-Heptachlorobiphenyl,100 µg/mL,isooctane,1mL, Price on request 683379 Tylosin tartrate, 250mg Price on request 63054 2,2’,6,6’-Tetrachlorobiphenyl (54) Price on request