Perchlorate Level 2 Back Catalog number: 59340 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 0947.9-K-IO 3-Methylbenzothiophene, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 1455-18-1 Price on request 79738 Chloral hydrate, 1000µg/ml in Acetonitrile, 1ml Price on request 66078 PCB No. 78, 100µg/ml in Isooctane, 1ml Price on request