Coral Obsessions just delivered my new milwaukee MA887 refractometer. This is one of the easiest instrument I have used to use for checking salinity. Calibration was a piece of cake and the readout is extremely accurate. the only bad thing i would say is that the manufacture should have included an instrument to place water on the prism. Other than that, I think this will be around my test kits for a long time. Great Price. Thanks Ron and Broc at Coral Obsessions
new digital refractomer
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