Turbidity (400 NTU) Back Catalog number: 50384 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 8721.22-10MG Di-n-heptyl phthalate, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 3648-21-3 Price on request 3174.5-K-IO Ethyl propanoate, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 105-37-3 Price on request AE-00057 Pesticide Mix #27, 1.0 µg/mL in Isooctane, 1ml Price on request