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  • Master Catalogue 2025

Refractometer

Refractometers measure the refractive index of liquids, pastes and solids with high precision. In close cooperation with well-known partners from industry and research, we have developed refractometers that can be easily integrated into existing processes in the laboratory.

Refractometers measure refractive index of liquids, pastes and solids

Subcategories

  • Digital refractometers

    Digital refractometers deliver highly accurate and reproducible measurement results, offer semi-automatic and fully automatic working, and are easily integrated into existing laboratory workflows. There are three different model groups available for the different requirements of temperature control and automation options.

  • Abbe refractometers

    Abbe refractometers

  • Process refractometers

    Process refractometers

  • Digital handheld...

    The mobile measurement with a digital handheld refractometer saves time as random checks or the regulation of mixing ratios can be carried out directly on the site. The measurement results are determined at the touch of a button and shown on the display. Unlike in the case of the analogue handheld refractometers, the digital determination of reproducible measurement results does not depend on the user’s interpretation

    • Automatic measurement
    • High measuring accuracy
    • Fast to fill and clean
    • Sample tray made of stainless steel
    • Robust housing and low weight
    • Automatic temperature compensation (Brix scale)
    • Display of the measurement results in different units
    • Very simple operation
  • Handheld refractometers

    Analogue handheld refractometer

  • Refractometer accessories

    Refractometer accessories

Active filters

KERN & SOHN GmbH Digital refractometer ORD 2WM Wine

Area of application: Wine

The following models are particularly suitable for measuring the sugar content in fruit. This is used to determine what alcohol content is to be expected from the fruit You can also determine the degree of ripeness of fruit (fruit sugar), e.g. grapes etc.

Scales
Measuring range
Accuracy
Division
Oechsle
KMW (Babo)
Mass SW
Vol AP
30 °Oe - 150 °Oe
0 °KMW - 25 °KMW
0 % - 35 %
0 % - 22 %
1 °Oe
0,1 °KMW
0,2 %
0,1 %
1 °Oe
0,1 °KMW
0,1 %
0,1 %
€333.00 Regular price €370.00
KERN & SOHN GmbH Analogue refractometer KERN ORA 90BE Brix

Area of application: Expert applications
The following models have a particularly large measuring range for the refraction index and large divided scales for measuring Brix values. 

Main areas of application: 
Universal field of application, primarily for applications which require an extra large measuring range
Scales
Measuring range
Division
Brix
0% - 42 %
42 % - 71 %
71 % - 90 %
0,2 %
0,2 %
0,2 %
€324.00 Regular price €360.00
KERN & SOHN GmbH Analogue refractometer KERN ORA 1RE Refractive index

Area of application: Expert applications

The following models have a particularly large measuring range for the refraction index and large divided scales for measuring Brix values. 

Main areas of application: 

Universal field of application, primarily for applications which require an extra large measuring range

Scales
Measuring range
Division
Refractive index
1,333 nD - 1,405 nD
1,405 nD - 1,468 nD
1,468 nD - 1,517 nD
0,005 nD
0,005 nD
0,005 nD

€324.00 Regular price €360.00
KRÜSS Digital handheld refractometer KRÜSS DR201-95

The compact handheld refractometer DR201-95 offers an extended measurement range of the refractive index and the sugar content of nD 1.3330–1.5318 and 0–95 % Brix. The automatic temperature compensation for the Brix scale helps the user with the measurements of beverages and sugary confectionary products. The device is splash-proof and meets the IP64 standard.

€415.00
KRÜSS Digital handheld refractometer KRÜSS DR101-60

As an entry-level model for the digital refractometry, the DR101-60 covers the measurement ranges between nD 1.3330–1.4419 and 0–60 % Brix. Thanks to the automatic temperature compensation for the Brix scale, you can achieve reproducible measurement results even under changing environmental conditions. As a water-tight device, the DR101-60 meets IP65 code and can be cleaned under running water.

€289.00
KRÜSS Abbe refractometer KRÜSS AR4

The AR4 determines the refractive index between nD 1.3000–1.7200 and the sugar content in the range of 0–95 %Brix of liquid, viscous as well as solid samples. Dry substance content in % and the dispersion value nF-nC can be calculated.

  • Measurement of liquid, viscous and solid samples, regardless of their turbidity, viscosity, transparency and absorption
  • Suitable for the measurement of foils and solids
  • Large measuring range of nD 1.3000-1.7200 and 0-95%Brix, scale manually adjustable
  • Reading the measured values via an eyepiece
  • Robust housing and easy handling
  • With thermostat connections that allow for the temperature control with an external thermostat
€1,034.00
KRÜSS Abbe refractometer KRÜSS AR2008

  • Measurement of liquid, viscous and solid samples, regardless of their turbidity, viscosity, transparency and absorption
  • Suitable for the measurement of foils and solids
  • Large measuring range of nD 1.3000-1.7200 and 0-95%Brix
  • Electronic evaluation of the measured data
  • Integrated thermometer
  • Automatic temperature compensation for the Brix scale can be optionally activated
  • Connections for temperature control with a circulating thermostat
  • Robust housing and easy handling
  • Serial interfaces for PC or printer (RS-232, RS-422)
€4,867.00
KRÜSS Abbe refractometer AR2008 with circulating thermostat PT80

The PT80 circulation thermostat is often used for the sample temperature control of Refractometer AR2008. The Abbe refractometer AR2008 can achieve highly accurate and extremely reproducible measurement results completely independent of the ambient temperatures. PT80 circulation thermostat is extremely small and can be very easily connected to all water-temperable refractometers.

€6,925.00
KRÜSS Digital refractometer KRÜSS DR6000-T

  • Measurement of turbid or highly viscous samples
  • With highly accurate internal Peltier temperature control
  • Preinstalled and freely definable scales with conversions based on tables or formulas
  • Chemical-resistant materials such as measurement prism made of sapphire, measuring tray made of stainless steel
  • Intuitive operation via touch-screen display
  • Complete data recording and backup including audit trail
  • Flexible data export
  • Compliance with global standards and norms
€6,498.00
KRÜSS Digital refractometer KRÜSS DR6100-T

  • Measurement of turbid or highly viscous samples
  • With highly accurate internal Peltier temperature control
  • Preinstalled and freely definable scales with conversions based on tables or formulas
  • Chemical-resistant materials such as measurement prism made of sapphire, measuring tray made of stainless steel
  • Intuitive operation via touch-screen display
  • Complete data recording and backup including audit trail
  • Flexible data export
  • Compliance with global standards and norms
€7,492.00
KRÜSS Digital refractometer KRÜSS DR6200-T

  • Measurement of turbid or highly viscous samples
  • With highly accurate internal Peltier temperature control
  • Preinstalled and freely definable scales with conversions based on tables or formulas
  • Chemical-resistant materials such as measurement prism made of sapphire, measuring tray made of stainless steel
  • Intuitive operation via touch-screen display
  • Complete data recording and backup including audit trail
  • Flexible data export
  • Compliance with global standards and norms
€7,951.00
KRÜSS Digital refractometer KRÜSS DR6300-T

  • Measurement of turbid or highly viscous samples
  • With highly accurate internal Peltier temperature control
  • Preinstalled and freely definable scales with conversions based on tables or formulas
  • Chemical-resistant materials such as measurement prism made of sapphire, measuring tray made of stainless steel
  • Intuitive operation via touch-screen display
  • Complete data recording and backup including audit trail
  • Flexible data export
  • Compliance with global standards and norms
€9,502.00
KRÜSS Digital refractometer KRÜSS DR6000

  • Measuring all sugar containing samples
  • Built-in thermostat connections for temperature control with external circulating thermostat
  • Preinstalled and freely definable scales with conversions bases on tables or formulas
  • Chemical-resistant materials such as measurement prism made of sapphire, measuring tray made of stainless steel
  • Intuitive operation via state-of-the-art touch-screen display
  • Complete data recording and backup including audit trail
  • Flexible data export
  • Compliance with global standards and norms
€5,148.00
KRÜSS Digital refractometer KRÜSS DR6100

  • Measuring all sugar containing samples
  • Built-in thermostat connections for temperature control with external circulating thermostat
  • Preinstalled and freely definable scales with conversions bases on tables or formulas
  • Chemical-resistant materials such as measurement prism made of sapphire, measuring tray made of stainless steel
  • Intuitive operation via state-of-the-art touch-screen display
  • Complete data recording and backup including audit trail
  • Flexible data export
  • Compliance with global standards and norms
€6,498.00
KERN & SOHN GmbH Digital refractometer KERN ORM 1HO Honey

Area of application: Honey

The following models are particularly suitable for measuring the Brix value, the water content in honey and the Baumé degree (°Bé) to determine the relative density of liquids You can also choose to display the refraction index.

Main areas of application:

  • Beekeeping
  • Honey production
Scales
Measuring range
Accuracy
Division
Refractive index
Brix
Baumé
Water content
1,3330 nD - 1,5173 nD
0 % - 90 %
38 °Bé - 48 °Bé
5 % - 38 %
0,0003 nD
0,2 %
0,2 °Bé
0,2 %
0,0001 nD
0,1 %
0,1 °Bé
0,1 %
€423.00 Regular price €470.00