WS Disinfection By-Products - Cal Check 4 Back Catalog number: 93986 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 1089.22-10MG Benzo[ghi]perylene-d12, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 93951-66-7 Price on request 2815.11-100-IO 3-Methyl-2-naphthol, 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 17324-04-8 Price on request 71058 tert-Butyl peroxide Price on request