HI-781-11 Marine Nitrate Low Range certified standards

Each high quality set of standards is manufactured in our state-of-the-art facility and comes supplied with a Certificate of Analysis. The certificate of Analysis provides the lot number, reference values and expiry date to provide traceability when certifying the Checker HC.

Hanna Instruments certifies these standards meet the states tolerance limited indicated.

2.49 ± 0.25 @ 25˚C

These should be used for quality control to validate instrument function on the specified Hanna Instrument only.

Instructions for use:

1 Thoroughly wipe standard cuvette with HI-731318 lint free cloth and only touch the top of the cuvette thereafter. The cuvette wall must be dry and free of smudges.

2 At the c1 prompt place HI-781-11 A standard cuvette into the holder of the checker and press operations button.

3 At the c2 prompt place HI-781-11B standard cuvette into the holder and then press the operations button.

Acceptable results must be between 2.25 and 2.75 ppm @ 25˚C.