Potassium (K), 1000µg/ml in 2%-HNO3/Water, 100ml Back Catalog number: 57019 Manufacturer: ABSOLUTE STANDARDS Availability: 3 weeks Price on request - + Recommended 50195 Sulfide (S) Price on request 92370 8260 Volatile Mix - IS Price on request 96595 1-Nicotine Price on request