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One BRAND NEW Palm Abbe AQUAR H5O Digital Seawater Refractometer is a professional refractometer for testing seawater
That's why we are the #1 Refractometer supplier on eBay
It is not carcinogenic (won't cause cancer) according the the product MSDS
This HI 98121 meter is designed for simultaneous pH and ORP measurements and also reads temperature
Which unit to get
Atago HHR-2N Honey Refractometer Bee Bees Beekeeper Calibration Fluids One BRAND NEW Palm AbbeItem Description: Atago HHR 2N Portable Refractometer One BRAND NEW Atago HHR 2N (12. 0% to 30% Water Scale) Hand held Refractometer in a blue, foam lined vinyl case. This unit is especially necessary when testing high sugar items like honey. The HHR 2N uses ambient light and doesn't need a battery or power source. Included are: a mini screwdriver for scale calibration, a 10 Gram Vial of Calibration Fluid and a Users Guide. This unit also features a