Perchlorate Level 2 Back Catalog number: 59340 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 1348.20-100-TX5 Benzo[b]fluoranthene-d12, 100µg/mL, Solvent-toluene, Unit 1mL, # of units-5, Cas.no. 93951-98-5 Price on request 1256.7-1ML trans-1,2-Dimethylcyclopentane, neat, Solvent-neat, Unit 1mL, # of units-1, Cas.no. 822-50-4 Price on request 79531 4-n-Nonylphenol Price on request