For Nitrogen, Ammonia Salicylate Method.
Hach 2653299 Ammonia Salicylate Reagent Powder Pillow, 10 mL (Pack of 100 )
Hach 2106069 PhosVer 3 Phosphate Reagent Powder Pillow, 10mL (Pack of 100)
Hach 2105569 DPD Free Chlorine Reagent Powder Pillows, 10 mL, (Pack of 100)
Hach 2106169 NitraVer 5 Nitrate Reagent Powder Pillows, 10 mL, (Pack of 100)
Hach 2105660 DPD Total Chlorine Reagent, SwifTest Dispenser Refill Vial, 250 Tests
Hach 2105560 DPD Free Chlorine Reagent, SwifTest Dispenser Refill Vial, 250 Tests