Ammonia as (NH4+) Back Catalog number: 50629 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended ASTM-P-0136-SET IP 391-95 Calibration Curve, in n-Heptane, 4 x 1ml Price on request 94083 Estrone Mix Price on request S-4135-100UL PIONA Mix.1 - Paraffins 11 n-Paraffins with varying Wt% as listed below; units: 0.1mL, 0.5mL neat. Chiron No. Name: Wt.% Chiron No. Name: Wt.% 1299.5 n-Pentane 13 1131.11 n-Undecane 7 1232.6 n-Hexane 12 1132.12 n-Do Price on request