Coolant/DEF Refractometer

What is a coolant refractometer?

The antifreeze/coolant refractometer is a portable instrument widely used in automotive maintenance and battery servicing for detecting liquid concentration and ensuring quality control. Its main functions are:

1. It determines the freezing point of automotive antifreeze/coolant by measuring the solution’s refractive index
2. It measures the specific gravity (SG) of automotive battery fluid to assess battery health
3. It measures the concentration of DEF/AdBlue to ensure emissions compliance,
4. It measures the concentration and freezing point of windshield washer fluid. 

How are our refractometers different?

Handheld refractometers have been a key product of our company since 1995. We have been using solid copper for key parts like the prism base and eyepiece. This not only lends the instrument a refined, robust feel but also effectively eliminates measurement errors caused by oxidation, corrosion, or deformation, thus enhancing accuracy and durability.

In terms of optical design, we use crown glass as the prism substrate. This material is known for its low dispersion characteristics, which effectively reduce refractive deviation across different wavelengths. Additionally, each model's internal optical path is independently calculated and designed by our engineers, to maximize measurement accuracy.

Model Selection Guide

Our RHA and RHAN series antifreeze/coolant refractometers come in a variety of scales and measurement ranges. Models are available with temperature readings in Celsius, Fahrenheit, or both. Please refer to the table below for detailed specifications. You can click on a model number to learn more about it.

Additionally, if your application requires a product that is not listed, please feel free to contact us. We are happy to develop new solutions specifically for you!

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