Core & Main Ammonia Standard, 1.0 ppm as N, 500 mLBy Core & Main $28.95 | EA Quantity discounts available QuantityPrice1 – 1$28.952 – 5$28.236 +$27.50 Product #: 707323Mfr. Part #: AS1001-PThis item is in stock Quantity -+ Add to Cart Free Ground Shipping On All Orders Over $1500!*Conditions Apply* Details Description Core & Main Ammonia Standard, 1.0 ppm as N, 500 mL Features 1.0 mg/L (ppm) as N DetailsBackDescription Core & Main Ammonia Standard, 1.0 ppm as N, 500 mL Features 1.0 mg/L (ppm) as N California residents see Prop 65 WARNINGS