LR COD Vials Mercury-Free Method: Dichromate Reactor Digestion Monster Gardens 10-minute & 25-minute auto-shutoff options

10-minute & 25-minute auto-shutoff options for hassle-free treatments

Inoculation of the rhizosphere with beneficial bacteria helps keep harmful bacteria from gaining a foothold

This expansion kit supports our Grow Flow Ebb and Gro Controller unit

High-Quality Materials: The bag's outer shell is made from a specially designed heavy-duty material

This lamp produces over 2100 PPF output with photon efficacy of 3 µmol/J

LR COD Vials Mercury-Free Method: Dichromate Reactor Digestion Monster Gardens 10-minute & 25-minute auto-shutoff optionsLow Range COD (Chemical Oxygen Demand) vials comes in a cardboard box and contains 150 vials, enough to perform up to 149 tests and instruction book. All COD Kits require the use of a Digestor Block and the V 2000 Photometer, an A 7320 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