Refractometer

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    …to grow instead of having to adjust to constant salinity changes. If you have a hard time seeing the fuzzy blue line common with traditional refractometers, or just want to make your life easier, pick up a Hanna HI98319 Salinity Testing Pen! Comes with calibration solutions ensuring proper readings…

    $75.00 Regular Price: $

    …water at the same time. With a 0.1ppt resolution, once you start using the Hanna HI98319 Salinity Testing Pen, you will never look through a refractometer ever again. What’s Included? 1x HI772 dKH Alkalinity Checker 1x HI758 Calcium Checker 1x HI774 ULR Phosphate Checker 1x HI98319 Salinity…

    $275.00 Regular Price: $
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