Product - COD Digestion


Learn more about Samples, Measurement, and Disposal of COD Vials

DRB200: Digital Reactor Block: 9 x 16 mm vial wells, 2 x 20 mm vial wells, 115 Vac

DRB 200 Reactors

The simple solution for standard and special digestions, reactors offer programmable digestion temperature and duration time. A dual digestion block gives the option for simultaneous digestions.



Reactor Adapter, 16mm to 13mm, for TNTplus vials, 5/PK

Reactor Adapter

  • Converts 16 mm diameter vial wells to 13 mm wells
  • Drop in and remove easily after cooling


Use the COD chemistries appropriate for your instrument to help ensure optimal results.


Chemical Oxygen Demand (COD) Reagent, TNTplus, ULR, 25 tests


All TNTplus reagents work with Hach’s DR 6000™ and DR 3900™ Spectrophotometers to simplify analysis, minimize error, eliminate chemical exposure and save time.




Chemical Oxygen Demand (COD) Reagent, TNTplus, HR, 150 tests

COD TNTplus (13 mm)

The following four chemistries contain mercury. Dispose of according to local, state and federal regulations.





Chemical Oxygen Demand (COD), Mercury-Free, TNTplus, HR, 25 tests

Mercury-free COD TNTplus (13 mm)

A greener choice without the hassle of mercury disposal.





COD Digestion Vials, Ultra Low Range, 1 to 40 mg/L COD, pk/150

COD Digestion Vials

Minimize handling of corrosive and toxic chemicals and eliminate pipetting hazardous reagents. 16 mm Test ’N Tube for Hach DR 6000™ and DR 3900™ Spectrophotometers.





COD2 Digestion Vials, HR, Mercury-free, pk/25

Mercury-free COD 2 Vials

16 mm Test ’N Tube for all instruments except DR 900 and Pocket Colorimeter II.





COD Digestion Vials, Manganese III, pk/150

COD Manganese III-Method 10067

16 mm for all instruments except Pocket Colorimeter II.