EPA Method 524 & 624 - Internal Standard Back Catalog number: 19494 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 90240 Captan Price on request BR-PFOSK L-PFOSK with branched isomers, 1.2ml x 50ug/ml, methanol Price on request 94567 PCB Congener Mix, 100µg/ml in Isooctane, 1ml Price on request