Turbidity Standard (1.0 NTU) Back Catalog number: 59290 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 2635.27-1UG 18 alpha(H)-22,29,30-Trisnorneohopane, neat, Solvent-neat, Unit ca. 1µg, # of units-1, Cas.no. 55199-72-9 Price on request 82410 EPA Method 8240A Matrix Spiking Standard Price on request 95308 Propanol Standard Price on request