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The EPA accepted Accu-TEST
Micro-COD System offers fast, low-cost determination of chemical oxygen
demand (COD). The Accu-TEST COD test provides you with a method for
rapid determination of wastewater strength. COD testing is a perfect
complement to BOD testing. The Accu-TEST System is compatible with all
commonly used COD determination methods and equipment.
The micro-COD
test determines the quantity of oxygen required to oxidize reduced
compounds, including organic matter, in a water sample. This test requires a
specific oxidizing agent and a catalyst, which are included in the Accu-TEST
reagents. The reagents and samples are processed for 2 hours at a
temperature of 150oC. The 2-hour time period is mandatory for EPA
approved methods, but COD readings for non-reporting purposes may be
obtained in as little as 15 minutes for readily oxidized wastes.
Step #1:
Twist off the cap. Add sample. Replace the cap.
Step #2:Digest
the sample and reagents at 150oC for two hours in our COD
reactor.
Step #3:
Read results on a calibrated spectrophotometer.
That's all there is
to it! If you wish to reopen the vial for titration of the digested
material, simply unscrew the cap and remove the sample. Special instructions
are provided for pre-treatment of high chloride (in excess of 2000 mg/l)
samples that permit analysis using the above method. For samples with low
chloride and ammonia levels, mercury-free reagents are available, which can
be used for non-reporting purposes.
COD Reactors: Each reactor
holds 15 or 30 reagent vials (16 mm) for digestion at 150oC.
Compact and solidly built, the units are factory set to the correct
temperature, with an accuracy of ± 2oC. Both units have an
available chemically-resistant safety shield and thermometer. |
