Why does TNT880 include two test vials?

Document ID

Document ID TE1207

Published Date

Published Date 05/03/2018
Question
Why does TNT880 include two test vials?
Summary
TNT880 red and green vials
Answer
In the s-TKN test using Product # TNT880, the red-capped vial that is digested gives a total nitrogen value. The green-capped vial that is not digested gives a combined nitrate + nitrite reading. The result from subtracting the nitrate + nitrite value from the total nitrogen value is the final Kjeldahl nitrogen value.

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