Ammonia as (NH4+) Back Catalog number: 50630 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 673614 alpha-HCH, 100 µg/ml, Ethyl acetate, 5ml Price on request 0218.17-200-T 11H-Benzo[b]fluorene, 200µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 243-17-4 Price on request 675831 Flucythrinate, 100 µg/ml, Toluene, 5ml Price on request