Nitrate as NO3-, 1000µg/ml in water, 100ml Back Catalog number: 54200 Manufacturer: ABSOLUTE STANDARDS Availability: 3 weeks Price on request - + Recommended L-PFOS Sodium perfluoro-1-octanesulfonate, 1.2ml x 50ug/ml, methanol Price on request 672987 17-beta-Estradiol-17-valerate, 100mg Price on request 9518.16-100-T 1,2,3,4-Tetrahydrobenzo[b]naphtho[1,2-d]thiophene, 100µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 90501-14-7 Price on request