Ade Advanced Optics Gl500 Gemological GEMSTONE Gem Refractometer Built-in Light

Well made, metal. Works well. Clear picture

This thing works as it should with clear instructions on how to calibrate . Easy to use. No batteries necessary. Will be using alongside blood glucose meter to compare body fluid levels and see if the Brix meter accurately rises and falls with the blood glucose meter readings. Will update after some weeks of use.Read full review

Verified purchase:  Yes • Condition: new • Sold by: opticsfactory

Refractometer

I have not used this meter very much. For the amount I have used it, it seems to work quite well.

Verified purchase:  Yes • Condition: new • Sold by: opticsfactory

Refractometer

Works great, easy to read scale, perfect!

Verified purchase:  Yes • Condition: pre-owned • Sold by: mobilepc_phones

Does the job!!!

Very good quality

Cost effective

So far so good.

Verified purchase:  Yes • Condition: new • Sold by: opticsfactory