Core & Main Ammonia Standard, 20 ppm as N, 500 mLBy Core & Main $37.60 | EA Quantity discounts available QuantityPrice1 – 1$37.602 – 5$36.666 +$35.72Product #: 706915Mfr. Part #: AS1020-PThis item is in stock Quantity -+ Add to Cart Add to List Add to My List Or: Create a New List Create and Add Item Learn more about Core & Main chemicals and reagents for your everyday water quality testing.Free Ground Shipping On All Orders Over $1500!*Conditions Apply* Details Description Ammonia Standard, 20ppm as N, 500 mL. Features 20 mg/L (ppm) as N DetailsBackDescription Ammonia Standard, 20ppm as N, 500 mL. Features 20 mg/L (ppm) as N Documents Safety Data Sheet