Refractometers are instruments designed to measure an optical constant called the refractive index, a characteristic of the sample  and the particles dissolved in it. This is defined as the relationship between the speed of light in a vacuum and the speed of light in a substance, it is a property of the material that is not different from the boiling and melting points, but that facilitates the final identification.

The measurement of the refractive index allows to make a graph that relates this property with the concentration of the sample, just need to know exactly how it varies depending on the amount of the species in the liquid.

Types of Refractometer a Lab May Need

Digital Salinity

  • Easy to use: only 1 drop of sample is needed, and the button is read immediately after 3 seconds. Digital display shows TDS/Brix (%) ยฐC
  • Easy calibration: With 1 drop of water, press the โ€œZEROโ€ button to return to zero. You can operate with one hand. The special induction tank is not easy to flow
  • Portable and exquisite, low power consumption, anti-loss design.
  • High precision measurement: The resolution is 0.01 and high precision sensor. Coffee concentration (TDS) and coffee sugar (Brix value) can be measured

Digital Brix

  • Automatic temperature compensation (ATC): 10 to 40ยฐC (50 to 104ยฐC)
  • Measuring time: approximately 1.5 seconds
  • Minimum sample volume: 2 metric drops
  • Light source: yellow LED
  • Sample cell: stainless steel ring and flint glass prism
  • Case material: l ABS
  • Chassis Classification: IP65
  • Battery: 1.5V AAA

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.

Beer Refractometers YR05939 // YR05943

The Kalstein hand-held optical refractometer measures the density of sugars in the solution and gives you an instant ...

Digital Clinical Refractometer YR05966 // YR05968

This clinical digital refractometer is mainly use for animals/pets and humansโ€™ serum protein & urine specific gravity. Itโ€™s ...


ATC Milk Refractometers YR05937 โ€“ YR05938

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


Digital Brix+Salinity Refractometers YR05961 

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


Our best-selling Refractometer

Brix refers to the measurement of the percentage of sugars and solids dissolved in a given weight of fresh plant juice. These solids include sucrose, fructose, vitamins, minerals, amino acids, proteins, hormones and other solids commonly found in a plant's juice. This RHB-05 is specially designed for liquid cutting tests. It can also be used to test the low brix solution.
High quality body construction
It uses only ambient light, which means no battery or power supply is needed
Easy to focus and calibrate

Catalog of models of Refractometer on offer


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.

What is the Refractometer for in the food industry?

The Refractometer is an instrument that measures the density of substances. Measures the level of refraction of a ...

Use of the Refractometer
- Kalstein

Refraction is the change in the speed of light as it passes from one medium to another, which is manifested 

Characteristics of Refractometers
- Laboratory

Refraction can be defined as the change of radiation direction when passing from one material to another...

How to keep your Refractometers in good condition?

Refractometers are optical instruments that are used to determine the percentage of soluble solids in a liquid solution. For this, the refractometer makes use of the principle of total refraction of light (caused by the type and concentration of substances ...

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.

The delivery time of your Kalstein product will depend on the following: 

  1. If the equipment of your interest is in stock or if on the contrary it should be manufactured. 
  2. The type of freight you have chosen may be; air or sea.
  • Equipment in stock:  

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

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

  • Equipment not in stock:  

โ€“ Delivery Time (Aereo): 30-60 days.  

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

You can make your purchase through: 

  1. By email: [email protected] 
  2. By phone: +33 (0) 1 78 95 87 02
  3. Electronic commerce: Through Kalstein's official website in his country. 

All Kalstein equipment has a 1-year warranty against manufacturing defects. The warranty does not cover damage caused by a poor installation or operation by the user, transportation defects or uses other than those specified by the manufacturer. Warranty excludes electrical or consumable parts. For more information visit our "terms and conditions" by clicking HERE

At Kalstein we provide our customers with inductions and technical support through new online methods. You can visit our inductions, technical assistance and guidance videos provided by a Kalstein team through our YouTube channel (Kalstein English). HERE

Of course, you can request a quote for the Kalstein team of interest, directly from our official website. Once you have identified the model of your choice, click HERE

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