Digital handheld refractometer - Alchetron, the free social encyclopedia
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Digital handheld refractometer - Alchetron, the free social encyclopedia
A digital handheld refractometer is an instrument for measuring the refractive index of materials. Most operate on the same general critical angle principle as a traditional handheld refractometer. The difference is that light from an LED light source is focused on the underside or a prism element.
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