Refractometers, hand-held, precision, MASTER 53a
For simple, manual measurement of concentrations and refractive indices of liquids. Hand-held, precision refractometers with focussing eyepiece, soft rubber eyecups (to reduce straylight ingress, also spectacle lenses do not slip off and are not scratched), case and conversion tables. Hand-held refractometers cannot be fitted with a thermostatic controller and so measurements have to be temperature compensated.

Models with extra code M: Basic model
Models with extra code T: with automatic temperature compensation (ATC)
Models with extra code a: with automatic temperature compensation (ATC) and protection class IP65

Specifications
Type MASTER 53a, for sugar
Measuring range: 0,0 - 53,0 % Brix (Automatic Temperature Compensation)
Minimum Scale Brix : 0.2%
Measurement Accuracy Brix : ±0.2% (at 20℃)
Repeatability Brix : ±0.1% (20℃)ATC
International Protection Class: IP65 (except eye piece)
Dimensions & Weight: 3.2 x 3.4 x 16.8cm, 130g
Dust-tight and Protected against water jets