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Mercury-Free COD reagents

Hanna Instruments offers a mercury-free or “green” method. These reagents are more sensitive to chloride interference, as mercuric sulfate is not present. The mercury-free COD reagents are available in a 0 - 150 ppm low range and 0 - 1500 ppm medium range. While the mercury-free reagents are easier to dispose of, they may be unacceptable for reporting purposes.

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