HI758-11 Calcium Standards for HI758 Hanna Checker - Marine Water

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HI758-11 Calcium Standards for HI758 Hanna Checker - Marine Water

SKU: 208637
Performance
2 Review(s)
$16.99
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  • Worked within its range! By on 12/8/2016

    It tested as it was advertised. There is a expiration date on the vials, which I didn't expect but makes sense if the standard has to be color specific. They store in a black plastic case that fits the box they come in so they can be protected from light and not fade I guess. The alkalinity and calcium are the same besides there different colors.
  • Excellent By on 9/18/2016

    Easy to use.