Ammonia as NH3 Back Catalog number: 50736 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 679448 Heptachlor endo-epoxide, 100 µg/ml, Methanol, 1m Price on request 675535 D4-Rhodamine B, 5mg Price on request 33154 EPA Method 552.1, 552.2 - Haloacetic Acids Price on request