Email this pagePrint this page Potassium Standard - 5,000 ppm w/w Go back to: Chemical Reagents, pH Indicators and Biological Stains Product Code: C2281 in Mineral Oil Hazard Rating4-Extreme 3-Severe 2-Moderate 1-Slight 0-Minimal Health Flammability Reactivity 500 mls$397.65 each 1 liter$662.74 each