Vee Gee Scientific STX-3 Handheld Refractometer, with Salinity Scale, 0-100, -1.0 Accuracy, 1.0 Resolution

If your in any doubt if this is worth the money...it is, feels quality, calibration adjustment so much better than the cheap ones, the quality of the optical scale is without doubt the best I've seen, forget Itc, DD and red sea, this is the best out there.

Actually a great piece of kit, very accurate and holds it calibration fantastically

I have two conductivity meters by Hanna, and while they appear to be more precise, they tend to drift over time. This refactometer is great. i had previously bought one of the $20-30 versions on Amazon, and threw it out almost immediately because it wasn't even in the ballpark. This is extremely fast, and extremely accurate. It's basically replaced the Hanna digital meter for me.

I am a Salt Water Aquarium Hobbyist and a refractometer needs to be your best friend. I originally ordered a cheeper one that would never keep a calibration. This unit is amazing. It came calibrated perfectly. It’s heavy and you can tell it’s made well. The numbers are easy to read and are in large print. It comes with a little bag a screwdriver and a pipet for testing. Easy to use if you know what you’re looking at. Highly recommend even though it’s expensive. As they say buy once cry once.

Have been using this refractometer for almost 2 years now. Extremely accurate and holds calibration. I have 3 ways to measure salinity but this is the one I trust most. I do periodic ICP tests and the results line up with the salinity reported by the VeeGee refractometer. This is worth every penny!

Don't risk buying a cheap refractometer. Peace of mind knowing you have one of the best and accurate salinity checkers.

My 10+ year old refractometer started giving consitantly erratic readings. It was time to replace it, and I chose this one based on reviews. I was not disappointed. I can feel the quality, just by picking it up. It doesn't feel "hollow". I can see the performance in rock-solid, consistant readings. I did have to calibrate it, though. According to my new bottle of calibration fluid, it was off by .0001. I haven't had to adjust it since then. A bit pricey, but like anything marine-wise... you get what you pay for. Highly recommended!!!