Hafnium (Hf) Back Catalog number: 58072 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 1590.12-100-IO 4-Hydroxycarbazole, 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 52602-39-8 Price on request 96656 EPA Method 504.1 - 524.2 Analytes Price on request 93902 Trihalomethane Standard Price on request