Hach COD in Salt/Seawater TNTplus Vial Tests

For photometric determination of low range COD by the reactor digestion method.


  • Easy and safe handling
  • No reagent blank necessary
  • Automatic method detection
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For saline COD samples with Chloride concentrations up to 20,000 mg/L Cl-1 COD

For photometric determination of low range COD by the reactor digestion method.

High Chloride concentrations usually interfere COD testing and lead to a high bias. Samples with low COD cannot simply be diluted since the COD detection limit is crucial.

TNT815 is a safe, reliable and very easy to use method for the photometric detection of low range COD in saltwater samples, e.g. in seawater.

The Direct Read Technology will provide your COD result to the nearest mg/L! No more cleaning glassware and dealing with large amounts of hazardous reagents and waste.

  • Digestion Required: Yes
  • Instrument: DR3900, DR6000, DR1900
  • Method: 10299
  • Method Name: Reactor Digestion
  • Number of tests: 25
  • Parameter:COD (for samples up to 20000 mg/L Chloride)
  • Platform: TNT plus™
  • Range: 7 - 70 mg/L COD
  • Shelf Life: 12 months from production date
  • Storage Conditions: 15 - 25 °C (protect from light)
Questions & Answers
What size vials are used for the Hach TNT chemistry kits?
The standard TNT kits are 16mm vials and the TNTplus kits are 13mm.
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Hach COD in Salt/Seawater TNTplus Vial Tests
COD in salt-/seawater - TNTplus Vial Test, LR (7 - 70 mg/L COD), 25 Tests
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Hach COD in Salt/Seawater TNTplus Vial Tests
COD in salt-/seawater - TNTplus Vial Test, HR (70 - 700 mg/L COD), 25 Tests
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