handheld refractometer for hydration testing in hydrogel contact lenses

The RHL35-80A Handheld Contact Lenses Refractometer is design specifically to measure the percentage of water content in contact lenses, with a measurement range of 35 to 80% and an accuracy of ±1%. The main body of the instrument is made of copper materials to maximize measurement accuracy and durability. This model is equipped with an Automatic Temperature Compensation function (ATC). We also offer an economical version without ATC.   Measurement Specifications Scale(s) Ranges Resolution Accuracy Water 35 to 80% 1.0% ±1%