![HI764-11 Nitrite Calibration Check Set for HI764 Checker](http://aquaticsuppliesusa.com/cdn/shop/products/208640-hanna-hi764-11nitritestandard-b-1_{width}x.jpg?v=1637255191)
Easily calibrate and test proper functionality of your Hanna Checker HI764 Nitrite Ultra Low Range for marine water (saltwater).
- Contains Standard A and Standard B
- Follow instructions in packaging
- Acceptable results must be between 86 and 114 ppb at 25°C
Hanna Checker Instructions for Nitrite ULR Standards:
- 1. Thoroughly wipe standard cuvette with HI731318 lint free cloth and only handle using top of cuvette. The cuvette wall must be dry and free of smudges.
- 2. At the C. 1 prompt, place A, HI764-11 standard cuvette into the holder of the Checker and press operations button.
- 3. At the C. 2 prompt, place B, HI764-11 standard cuvette into the holder of the Checker and press operations button.
- Acceptable results must be between 86 and 114 ppb at 25°C