Review on 🔬 High-precision AUTOUTLET Refractometer Saltwater Aquarium: Perfect for Seawater, Pool, Tank Testing, Marine Fishkeeping. 0-100PPT & 1.000-1.070 Salinity Tester with ATC Function, Hydrometer Specific Gravity Salinity Meter Kit – Buy Now! by Darin Marshall

Bought to replace an old pendulum hydrometer for my marine aquarium. The device is accurate, I have tested and dialed it with calibration fluid and also double checked with my hydrometer. I am concerned about the design of this refractometer. It feels plastic and cheap in the hand, it doesn't weigh that much. A plus is the fact that it comes with a hard plastic storage box. There are foam inserts in the case, so I think that with proper care (dry, cleaned, etc.) it will last a long time.