Rhinoco Salinity Refractometer, Saltwater Aquarium Refractometer, Dual Scales Specific Gravity Salinity Meter with 0-100 PPT and 1.000-1.070 for Seawater, Pool, Tank, Te

Nice product! Has quality feel, and beats the heck out of the floating plastic indicator type SG meter. One little thing to keep in mind is that it requires a few drops of distilled water for calibration before using it the first time. It would have been nice if it came with a little vile of distilled water for this purpose, but I understand the difficulties.

Easy to use once calibrated

The refractometer is the best way to check your salinity. Dont waste your money on a hydrometer. You will need to calibrate it with distilled water.

Works exactly as expected. Very easy to use, and easy to clean. So much better than the old plastic salinity devices that wear out over time.

I have an expensive brand name one of these and this works just as good. Was bang on straight out of the box and has kept calibrated. Save yourself some money and buy this.

So far so good.

Easy to read and works like it should!