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HI721-21 Iron Standards for HI721 Hanna Checker - Fresh Water

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HI721-21 Iron Standards for HI721 Hanna Checker - Fresh Water

SKU: 208624
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Quick Overview

Easily calibrate and test proper functionality of your Hanna Checker HI721 Iron HIgh Range for fresh water.

  • Contains Standard A, Standard B and 1 Packet 721-25 Reagent*

  • Follow instructions in packaging

  • Acceptable results must be between 0.94 and 1.06 ppm at 25°C
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Full Details

Hanna Checker Instructions for Iron HR Standards:

  1. 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. 2. Open B, HI721-11 standard cuvette and add 1 packet of HI721-25 reagent using procedure from the instructions (including timing).
  3. 3. At the C.1 prompt, place A, HI721-11 into the holder of the Checker and press operations button.
  4. 4. At the C.2 prompt, place B, HI721-11 standard cuvette as prepared above into the holder of the Checker and press operations button.
  5. Acceptable results must be between 0.94 and 1.06 ppm at 25°C
  6. *Attention: 1.00 ppm standard cuvette can be used only once.

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