HR+ COD Vials 0-15,000ppm HR+ Mercury-free (100 Count) spl_hi Propagate like a pro with

Propagate like a pro with our complete Propagation Kit

the AS-4 continuously monitors carbon dioxide (CO₂) levels using input from either the AL-1 or AL-2 CO₂ sensors—or both for full redundancy

It is an excellent natural and organic supplement to other plant foods and soil conditioners

Meets or exceeds all industry-listed standards

HR+ COD Vials 0-15,000ppm HR+ Mercury-free (100 Count) spl_hi Propagate like a pro withHigh Range Plus, COD vials comes in a cardboard box and contains 98 vials, enough to perform up to 97 tests and instruction book. All COD Kits require the use of a Digestor Block and the V 2000 Photometer, an A 7325 COD Photometer, or a spectrophotometer capable of accepting a 16 mm round cell. Photometers sold separately. A fresh reagent ampoule blank must be prepared for each series of tests; therefore the number of samples that can be tested with