Perchlorate Level 1 Back Catalog number: 59339 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 680422 zeta-Cypermethrin, 100 µg/ml, Acetone, 1ml Price on request 674540 D4-Picolinafen, 10.0 µg/ml, Acetonitrile, 10ml Price on request 674232 Fenthion-oxon, 10.0 µg/ml, Acetonitrile, 1ml Price on request