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For your concentration control


The SmartRef digital refractometer allows quick measurements of your cutting oil-water mixture to ensure its appropriate concentration. To verify the required dilution ratio and quality, it is recommended to take regular measurements of the cutting oil concentration. This can reduce hazards for employees, machine wear, as well as problems during the machining process.

Connected to the Lab Meister mobile app, the SmartRef allows you to measure, store and visualize the measurement results for later reference.

Lab Meister App for SmartRef Digital Refractometer Cutting Oil Concentration Measurement

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):

  • Brix [°Bx]
  • Cutting oil concentration [%oil]
  • Refractive index current temp. [nD]
  • Refractive index at 20 °C [nD @20]
  • Temperature [°C], [°F]
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Determination of cutting oil concentration with SmartRef Digital Refractometer

Determination of cutting oil concentration with SmartRef Digital Refractometer

With our digital refractometer SmartRef and the Lab Meister mobile app, the cutting oil concentration can be measured quickly and reliably. The SmartRef measures the sample in °Brix and applies the user-specific correction factor automatically to the measurement result.

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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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