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For your quality control


The SmartRef digital refractometer helps control the blend ratio of heat transfer fluids consisting of glycol and water with highly accurate measurement results. This makes the SmartRef a perfect tool for engineers working with air conditioners, heat exchangers, or even pasteurizers.

Connected to a mobile app, the SmartRef allows you to measure, store and visualize the measurement results so that you can ensure reliability in your control measurements.

Lab Meister App for SmartRef Digital Refractometer Freezing Point Measurement for Heat Transfer Fluids

The Lab Meister smartphone app allows you to measure, save, visualize and export data all in one place.

With a small sample volume of only 0.4 mL, the SmartRef delivers accurate results with automatic temperature compensation (ATC):

  • Ethylene glycol [% v/v], [% w/w]
  • Ethylene glycol freezing point [°C], [°F]
  • Propylene glycol [% v/v], [% w/w]
  • Propylene glycol freezing point [°C], [°F]
  • Refractive index current temp. [nD]
  • Refractive index at 20 °C [nD @20]
  • Temperature [°C], [°F]
View all specifications
Workflow with the SmartRef Digital Refractometer

Workflow with SmartRef Digital Refractometer

Our step-by-step guide takes you through your first measurement with the SmartRef and shows you how everything works.

Learn more

Device features

High accuracy

High-precision measurement sensor with an accuracy of 0.2 °Brix

Wide measuring range

Measuring range from 0 to 85 °Brix with automatic temperature compensation


Free mobile app for iOS & Android with smart measurement guidance for precise results

Waterproof design

IP66 dust-tight and protected against powerful water jets

Why SmartRef?

Other refractometers
One device for all units
Continuous measurement mode
Simple cleaing & adjustment
Sample verification for reliable results
Smart data management via mobile app
Over-the-air updates with new features & scales
Automatic in-app calculations
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