TRZ Salinity Refractometer for Aquariums, Marine Monitoring, Saltwater Testing, Dual Sacle 0-100ppt Salinity & 1.000-1.070 Specific Gravity Automatic Temperature Compensation.

Just remember these types of units do not stay in calibration or vary on temperature (Even though they may say temperature calibrated) so you will need to use calibration liquid every time that you check your water because fluctuations exist. I've tried several different refractometers now and they are mostly the same.

Bought this one to check my old one, this one checked right on the dot at 1.026 with the new Aquatic Experts fluid. My old refractor check in at 1.027, I'm so glad I bought this one and it came spot on. My corals will be much happier now.

Exactly what I needed once you calibrate the refractometer with fresh tap or bottle water clean it off and a few drops of you saltwater and it gives you a true reading of your salt I love it can’t go wrong it’s awesome

I had the dip in water type with the big plastic needle that moves to my salinity level. I felt it wasn’t accurate which was verified by my LFS. They had these available for $90 range. This one here was much cheaper, & exactly the same as they sold in the store. Works great, & comes in a storage box. Easy to use, easy to clean, easy to read. Couldn’t be happier.

I love that it is very accurate. Plus it is super easy to use and clean. However, the numbers are soooo small it is sometimes hard to read.

Superb product. Easy instructions. Love it.

Works great, that is all

I have no doubt this works Perfectly however made the mistake of thinking it would work to test Pool salt.

very light and feels cheap but works well. Calibrating it was easy but i feel like i have to calibrate it for different tanks. does not easily match other refractometers but if youre using it for one tank its perfect as long as you keep your salinity at the same level. also worth the price. i also ordered a calibration solution because it does not come with one.

Works as needed. You will need to buy calibration fluid for it separately. It's around $20 on Amazon. Even with buying the fluid on top of buying this, it's still cheaper than in our local stores for the refractometer alone. Solid purchase if you have saltwater tank.

I have had this for a couple months now, and it simply doesn't work correctly, guess the old saying you get what you pay for it correct. I would spend the extra on a better quality known brand, you will save money in the long run.

cannot stress this enough -- probably the best item to keep for your hobby if you are keeping a reef aquarium. Had a floating hydrometer and swing arm in the past, the first of which is inaccurate and the swing arm was completely off readings - throwing my tank in disarray for weeks and wasting salt. losses with oversaturated salt...since this product ive been accurate with specific gravity readings and have had nothing but good luck.

It works pretty decent I'd say. The accuracy is a little off by maybe 5? Other than that, it's pretty good and half the price what they were charging at the petstore.