Refractometers are highly precise optical instruments whose function is to determine the percentage of soluble solids in a liquid solution, using the principle of total refraction of light (originated by the type and concentration of the substances dissolved in a liquid solution, for example, sugar), which takes place in the boundary layer between the prism and the sample. Therefore, it can be said that the refractometer measures the density of liquids, the denser a liquid the greater the refraction, the more the sugar content, the higher the refraction index. The portable refractometers are simple, resistant and reliable, allowing us to make measurements in the laboratories or outside, with exact measurements of temperatures, refractive index, density pH and color with a small sample, setting aside reliable results, increasing safety and avoiding errors, in addition to reducing costs and improving the operational safety of the laboratory.


Types of Refractometer a Lab May Need

Digital Refractometer

This type of refractometer has made these useful instruments evolve with technology. Since it is easier to analyze substances such as lactose, glucose, among others. Its results are accurate, fast and safe. It offers more advantages than the Abbe refractometer, because there is no need for manual annotations, thanks to the incorporation of screens that show the temperatures and the results of each measurement. It also allows to measure several samples with a single refractometer, since it has programming software so that the user has a wide range of scales.


Optical Refractometer

There are two types of refractometers depending on the refractive index detection; transparent systems and reflection systems. Portable refractometers and Abbe refractometers use the transparent systems, while digital refractometers use the reflection systems.


In Kalstein you can find the Ideal Refractometer for your Laboratory

There are countless models, so it is normal that you do not know which Refractometer to buy to meet your needs. At Kalstein, we evaluate you to find what you're looking for.

Brix Digital Refractometer YR05944 // YR05952

Digital Brix Refractometer is designed to measure the concentration of soluble solids (almost 100% sugar)...


Brix Refractometers YR05872 // YR05884         

Brix Refractometer is frequently used by grape growers, vegetables growers, home brewers as well as food producers ...


Digital Brix+Salinity Refractometers YR05961

Digital Brix+Salinity Refractometer is designed to measure the concentration of soluble solids (almost 100% sugar) ...


ATC Milk Refractometers YR05937 โ€“ YR05938

The Kalstein ATC Refractometer is a handheld, portable, milk refractometer with a milk scale that measures in the...


Our best-selling Refractometer

The Kalstein Salinity Refractometer is designed for testing the concentration of salt water and brine and used for quality control in research and clinical laboratories and marine industry. Its scale provides a direct reading of the specific gravity and concentration (part per Thousand) of salt in water. One scale checks the NaCl levels with the range of 0-100 ppt and the other scale gauges Specific Gravity with a range of 1.000 to 1.070. Both enables the direct determination of salinity in water that contains dissolved salt and little or no other dissolved solids. It is suitable for a marine saltwater tank. Itโ€™s FULLY EQUIPPED with ATC that automatically adjust itself to correct temperature discrepancies during use


Guides for you to become an expert in Refractometer

Refractometers are essential products in a laboratory, we provide guides and recommendations for better use, so you can work as an expert 

Reportable refractometers and their clinical applications

It is a portable device of firm use, which is used easily to monitor in a simple way the Brix degrees, that is, the sugar content in solutions...

What are the benefits of scientific applications of refractometers?

Refractometers are a useful measuring instrument for liquid analysis in the laboratory due to their simplicity of operation...

What are the main applications of laboratory refractometers?

Laboratory refractometers have proven to be one of the most indispensable scientific instruments for analytical research....

How can laboratory refractometers improve the quality of scientific results?

Laboratory refractometers play an important role in the pharmaceutical, food, forestry and biofuels industries to improve and maximize the quality of scientific results. These devices differ from common in-situ optical refractometers in that the laboratory...

Frequently asked questions about Refractometer

To know the price of the Refractometer we invite you to send us an email with your request through the contact form

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  • Equipment in stock:  

โ€“ Delivery Time (Aereo): 15-30 days.  

โ€“ Delivery Time (Maritimo): 45-60 days. 

  • Equipment not in stock:  

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โ€“ Delivery Time (Maritimo): 60-90 days. 

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