The economical AR5 digital refractometer with Peltier temperature control included makes sophisticated measuring technology available to users on a tight budget. High-end accuracy and a good price point give customers an exceptional advantage in the laboratory. The AR5 is precise, measuring refractive index and % Brix with results accurate to 0.0001 RI and 0.05% Brix. The AR5 is the ideal instrument to perform routine measurements with standard scales and has the ability to be configured for custom measurements. The robust design, sapphire prism and reliable operation make it a workhorse for the laboratory, resisting surface damage from demanding applications.

Reichert AR5 Advantages 

  • Accurate, fast and reproducible measurements
  • Flexible, modular – easily connects to Reichert density meters, Density5 and Density4 and polarimeters, Polar2 and Polar3, for additional measurements
  • Robust design for rough environments
  • Sapphire prism
  • Built-in solid state Peltier thermostat for accurate temperature control
  • Easy to clean and maintain with flat sample chamber
  • Easy to calibrate
  • Energy saving LED light source
  • Remote diagnostics and maintenance of data available

Technical Data

  • Prism – Sapphire
  • Light source – Lifetime LED, interference filter 589nm
  • Display – Two line visual display or Optional Universal Display 7″ color touchscreen
  • Interfaces – RS232, USB optional
  • Weight and dimensions  – 10.8 lbs. (4.9 kg), 8.2 x 8.2 x 6.3 inches (210 x 210 x 160mm)
Measuring Scales                  Refractive index (RI), % Brix and other standard scales included. User defined scales available.
Measuring Range 1.3200 – 1.5800RI/0 to 100% Brix
Accuracy ± 0.0001 RI / ± 0.05% Brix
Reproducibility ± 0.0001 RI / ± 0.05% Brix
Measurement Method Single sample
Measurement mode  Continuous


Temperature Specifications

Ambient Operating Temperature  +10 to +40°C
Automatic Temperature Compensation    +5° to +50°C
Temperature Measurement Optimized accuracy – sensor integral to sample surface
Temperature Control Method Peltier control range 20°C or 25°C
Temperature Accuracy ± 0.03°C
Temperature Reproducibility ± 0.02°C

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