(HI781-25) Marine Nitrate Checker Reagents (25 Tests) – Hanna Instruments


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The HI781-25 are high-quality reagents that are pre-measured, allowing for users to achieve fast and accurate measurements with their HI781 Marine Nitrate Low Range Colorimeter. These reagents follow a colorimetric method in which the reaction between nitrate and the reagent causes a pink/violet tint in the sample. This checker has been developed to work with seawater samples.


Get your replacement reagents for your HI781 Marine Nitrate Low Range Colorimeter today. These high-quality reagents are manufactured in our state-of-the-art facility and are clearly marked with the lot number and expiration date on each packet for traceability.


Pre-made reagents for ease of use.

Prepared with high purity chemicals.

Marked with expiration date and lot number for traceability

What’s Included:


1x PC x100 mL HI781A-0

25x PCS x 0.16g HI781B-0

25x PCS x 0.6g HI781C-0

25x PCS x Paper Filters





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