Turbidity Standard (1.0 NTU) Back Catalog number: 59290 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 1485.12-100-T 2-Nitrobiphenyl, 100µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 86-00-0 Price on request 98528 5-Nitro-o-toluidine Price on request 71579 4-Nitrophenol-PFB derivative Price on request