Pre-filled with COD reagents, these digestion vials come in either EPA-approved or mercury-free versions for low-, standard-, and ultra-high-range analysis.
Vials contain premeasured digestion reagents suited to your expected range of COD, so there is no measuring of harmful chemicals- simply add your sample to
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A COD test typically involves digestion of a water sample in a sealed vial with potassium dichromate and sulfuric acid at 150oC for 2 hours.
The EPA does not allow a modification of the reagents used for reporting purposes. You must use all specified reagents in the COD vial.
hour time period is mandatory for EPA approved methods, but COD readings for non- digestion of up to 15 or 30 reagent vials (16 mm diameter). They.
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