Pocket Refractometers | Digital & Robust

Pocket Refractometers

Small, Robust and Faster than Ever—Our Digital Pocket Refractometers Deliver Accurate Results in Just Two Seconds

A pocket refractometer is a small handheld device that measures the refractive index of liquids. It works by analyzing the angle of refraction of light that interacts with samples, providing an accurate measurement of the refractive index. Our digital pocket refractometers are ergonomically designed and provide results within two seconds at the touch of a button. Its compact and lightweight construction makes it effortless to carry in your pocket, so you can take measurements anywhere.

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Advantages of METTLER TOLEDO's Pocket Refractometers

Pocket refractometer

Ready for All Samples

Our refractometers master a wide variety of applications, including refractive index, Brix, and other sugar content or concentrations.

Pocket refractometer

Measure Anywhere

Engineered with high-quality components to ensure a long lifespan, our digital handheld refractometers can withstand harsh environments on the go, in the production area, or in a quality control lab.

Analog refractometer vs digital refractometer

Say Farewell to Your Analog Refractometer

Compared with analog refractometers, digital refractometers provide more reliable results, eliminate operator dependency, and assist in detecting errors.

EasyDirect PC software for refractometer

Advanced Data Storage

The handheld digital refractometer line, Refracto, stores up to 1,100 results and connects to EasyDirect PC software for enhanced data viewing.

Explore Our Services - Tailored to Fit Your Equipment

We support and service your measurement equipment through its entire life-cycle, from installation to preventive maintenance and calibration to equipment repair.

Support & Repair
Maintenance & Optimization
Calibration & Quality
Training & Consulting


How do you use a pocket refractometer?

Using a digital pocket refractometer is as simple as ever. Almost anyone can use one by following these three simple steps.

Firstly, make sure the prism is clean. Secondly, add a few drops of sample to the prism—approximately 0.3 ml—ensuring it is well covered. Finally, press the button to begin measuring. You'll receive the results in just two seconds.

All our pocket refractometers deliver results that are automatically temperature compensated and converted into up to three of the 10 integrated sugar-related scales, including Brix, Oechsle, °Baumé, and many more. You can easily toggle through these on the device until you find the number that represents your desired scale.


How do you calibrate a pocket refractometer?

The calibration of a digital pocket refractometer is very simple. In this video, you will find out how to calibrate and verify a METTLER TOLEDO MyBrix pocket refractometer quickly and easily. All you need to get started is your MyBrix refractometer, a small amount of pure water, and some lint-free tissue paper.

Additionally, you will learn how to get reliable results and perform trustworthy analyses.

Watch the video below to learn more:



What are the uses of a pocket refractometer?

Due to their portability, high accuracy, and ease of use, digital pocket refractometers are used across several industries to measure the refractive index of many different substances.

In the food and beverage industry, for example, pocket refractometers are widely employed in production and quality control applications to determine the sugar content (Brix) of fruit juices, carbonated beverages, beer, honey, jams, confectionaries, and much more. To determine the optimal harvesting time, winemakers also rely on pocket refractometers to measure the Oechsle of grape must in vineyards. While it is not as common, you may also find them being used when brewing coffee to measure the TDS (Total Dissolved Solids)—which is a good indicator of how well the coffee is extracted.

In the chemical industry, pocket refractometers are typically used to verify the concentration value of acids, bases, or the presence of organic solvents in inorganic salt (% w/w or v/v). Meanwhile, in the pharmaceutical industry, a they are employed to control the purity and concentration of raw materials, semi-finished products, and end products during manufacturing.