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  • Master Catalogue 2025

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  • Microscopes

    Professional Microscopes for laboratory, industry and food

  • 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.

  • Circulating thermostats

    A.KRÜSS offers two thermoelectric circulation thermostats with integrated Peltier technology for external temperature control. The temperature is generated by means of a current flow through semiconductors. So can be done by simply reversing the direction of flow in a small space both heating and cooling. The A.KRÜSS circulating thermostats fulfill all standard tasks and routine work in laboratories and industry. They are specially designed for sample temperature control, analysis tasks and for the temperature control of our high-quality laboratory equipment such as polarimeters and refractometers.

  • Precision balances

    Precision balances

  • Analytical balances

    Analytical balances are high-precision laboratory balances and are used in scientific and industrial laboratories of various industries to determine the mass of solid, bulk and liquid substances with an accuracy of 0.1 mg. Semi-microbalances are even more accurate - their readout resolution is 0.01 mg. Laboratory analytical balances according to OIML have a special accuracy class I. An important characteristic of any balance is the weighing range, the weighing range value for analytical balances from 50 g to 500 g.

    The operation of modern electronic analytical balances is based on the principle of electromagnetic compensation. According to this principle, the weight of the load is compensated by an electromagnetic force directed opposite to the weight. The compensating force is determined by the strength of the current flowing in the magnetic coil. The electrical signal from the sensor is converted into digital, corresponding to the measured mass, and displayed on the display.

    The analytical balance platform is located inside a transparent display case, which serves to eliminate the accumulation of dust and the influence of air currents on the measurement accuracy. The calibration of this precision instrument can be external, internal or automatic. Electronic analytical balances are equipped with a large number of additional functions:

    • selection of a unit of measure of mass (some models have up to 24 units of mass)
    • tare function (zeroing the tare weight in the entire weighing range)
    • dynamic weighing (weighing animals or non-static objects)
    • percentage weighing (making measurements percentage of components)
    • prescription weighing (weighing a multicomponent mixture)
    • hydrostatic weighing (determining the density of substances)
    • the ability to connect to a PC, etc.
  • Moisture analysers

    Moisture analysers

Active filters

KERN & SOHN GmbH KERN DBS 60-3 Moisture analyser

Adjusting program (CAL): For quick setting of the balance's accuracy. External adjusting weight required. Memory: Balance contains memories, e.g. for  tare weights, weighing data, item data,  PLU etc. Data interface RS-232: To connect the balance to a printer, PC or network GLP/ISO log: the balance displays the weight, date and time, regardless of printer connected Weighing units: Can be switched to e.g. nonmetric units at the touch of a key. See balance model. Mains part: mains part integrated in the balance. 230V/50Hz Standard type D, if requested also available in standard GB, AUS or USA. Weighing principle: Electromagnetic force compensation: Coil inside a permanent magnet. For the most accurate weighings

TECHNICAL DATA

Weighing capacity [Max] 60 g
Readability [d] 0,001 g
Weighing system Single-Cell
Temperature [Min] (°C) 50 °C
Temperature [Max] (°C) 200 °C
Stabilization time 3 s
Units g, % Humidity, % Dry mass, % ATRO
Reproducibility 0,001 g
Linearity ± 0,003 g
Readability moisture [d] (%) 0,01%
Drying modes Standard drying, Rapid drying, Gentle drying, Drying in levels
Switch-off criteria time controlled, automatic, manual
Product group Moisture analyser
€1,650.00
KERN & SOHN GmbH KERN DLB 160-3A Moisture analyser 1 mg

Adjusting program (CAL): For quick setting of the balance's accuracy. External adjusting weight required. Memory: Balance contains memories, e.g. for  tare weights, weighing data, item data,  PLU etc. Data interface RS-232: To connect the balance to a printer, PC or network GLP/ISO log: with weight, date and time. Only with KERN printers, see Accessories Weighing units: Can be switched to e.g. nonmetric units at the touch of a key. See balance model. Mains adapter: 230V/50Hz in standard version for Germany. On request GB or USA version. Strain gauge: An electrical resistor strip that is glued to an elastic deforming body made of aluminium. As the strain gauge is mechanically deformed its resistance value changes, allowing

TECHNICAL DATA

Weighing capacity [Max] 160 g
Readability [d] 0,001 g
Weighing system Strain gauge
Temperature [Min] (°C) 35 °C
Temperature [Max] (°C) 160 °C
Stabilization time 4 s
Units g, mg, % rH, % Dry mass
Reproducibility 0,001 g
Linearity ± 0,003 g
Readability moisture [d] (%) 0,01%
Drying modes Standard drying, Rapid drying
Switch-off criteria time controlled, automatic, manual
Input Voltage 110V or 240V, 50-60 Hz
Product group Moisture analyser
€1,655.00
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 Circulating thermostat KRÜSS PT31

The smallest circulation thermostat on the market

The PT31 circulation thermostat is equipped with highperformance functions. The 1.5 kg lightweight device is ideally suited for applications requiring a temperature range at a constant level. The proven Peltier technology offers process-reliable temperature control in the range from 8 °C to 35 °C. The accuracy of temperature control is ±0.2 °C.

The robust locking mechanism of the PT31 provides a sturdy connection and ensures constant temperature control of the medium. The compact and sturdy design does not require much space and can be placed anywhere in the laboratory.

€1,490.00
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
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
KRÜSS Circulating thermostat KRÜSS PT80

  • Circulation thermostat with Peltier technology
  • Rapid temperature control from 5 °C to 80 °C
  • Temperature accuracy of ±0.1 °C
  • Extremely quiet and low-vibration operation
  • Environmentally friendly, due to 50% lower energy consumption and elimination of refrigerants
  • Suitable for operation with non-flammable liquids (water or water/glycol mixture)
  • Resistive touchscreen display
  • Easy-to-understand and intuitive menu navigation
  • Standard RS-232 interface for PC communication
  • PT80 control by P8000 series polarimeter
€1,890.00
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
KERN & SOHN GmbH KERN DLB 160-3A Moisture analyser 110V

Adjusting program (CAL): For quick setting of the balance's accuracy. External adjusting weight required. Memory: Balance contains memories, e.g. for  tare weights, weighing data, item data,  PLU etc. Data interface RS-232: To connect the balance to a printer, PC or network GLP/ISO log: with weight, date and time. Only with KERN printers, see Accessories Weighing units: Can be switched to e.g. nonmetric units at the touch of a key. See balance model. Strain gauge: An electrical resistor strip that is glued to an elastic deforming body made of aluminium. As the strain gauge is mechanically deformed its resistance value changes, allowing

TECHNICAL DATA

Weighing capacity [Max] 160 g
Readability [d] 0,001 g
Weighing system Strain gauge
Temperature [Min] (°C) 35 °C
Temperature [Max] (°C) 160 °C
Stabilization time 4 s
Units g, mg, % rH, % Dry mass
Reproducibility 0,001 g
Linearity ± 0,003 g
Readability moisture [d] (%) 0,01%
Drying modes Standard drying, Rapid drying
Switch-off criteria time controlled, automatic, manual
Input voltage device / power [Max] 110 V; 50/60 Hz
Product group Moisture analyser
€1,655.00
KERN & SOHN GmbH KERN 572-32 Precision Balance 1 mg

All-rounder, e.g. as precision balance in the laboratory or in harsh industrial applications, ideal for the diverse possibilities of Industry 4.0 applications

TECHNICAL DATA

Weighing capacity [Max] 420 g
Readability [d] 1 mg
Units g, gn, dwt, tl, ozt, ct, mo, lb, oz, ffa
Linearity ± 0,005 g
Reproducibility 0,002 g
Stabilization time 3 s
USP Minimum weight of sample (k = 2, U = 0.1%) 4 g
Interfaces RS-232 (optional), Bluetooth (optional), Ethernet (optional), USB-Device (optional), KUP, WiFi (optional)
Adjustment options Adjusting with external weight
Recommended adjusting weight 200 g (E2); 200 g (E2)
Ambient temperature -10 °C – 40 °C
Dimensions weighing surface (Ø) 106 mm
Material draught shield metal, lacquered
Material housing cast aluminium
Dimension housing (W×D×H) 180×310×85 mm
Material weighing plate stainless steel
Net weight approx. 2,4 kg
Construction type of the scale Single-range balance
€697.50 Regular price €775.00
KERN & SOHN GmbH KERN 572-30 Precision Balance 1 mg

All-rounder, e.g. as precision balance in the laboratory or in harsh industrial applications, ideal for the diverse possibilities of Industry 4.0 applications

TECHNICAL DATA

Weighing capacity [Max] 240 g
Readability [d] 0,001 g
Units g, gn, dwt, tl (Tw), tl (HK), ozt, tl (Singap, Malays), ct, mo, lb, oz, ffa
Linearity ± 0,003 g
Reproducibility 0,001 g
Stabilization time 3 s
USP Minimum weight of sample (k = 2, U = 0.1%) 2 g
Interfaces RS-232 (optional), Bluetooth (optional), Ethernet (optional), USB-Device (optional), KUP, WiFi (optional)
Adjustment options Adjusting with external weight
Recommended adjusting weight 200 g (F1)
Ambient temperature -10 °C – 40 °C
Dimensions weighing surface (Ø) 106 mm
Material draught shield metal, lacquered
Material housing cast aluminium
Dimension housing (W×D×H) 180×310×85 mm
Material weighing plate stainless steel
Net weight approx. 2,4 kg
Construction type of the scale Single-range balance
€675.00 Regular price €750.00
KERN & SOHN GmbH KERN 572-31 Precision Balance 1 mg

All-rounder, e.g. as precision balance in the laboratory or in harsh industrial applications, ideal for the diverse possibilities of Industry 4.0 applications

TECHNICAL DATA

Weighing capacity [Max] 300 g
Readability [d] 0,001 g
Units g, gn, dwt, tl (Tw), tl (HK), ozt, tl (Singap, Malays), ct, mo, lb, oz, ffa
Linearity ± 0,005 g
Reproducibility 0,002 g
Stabilization time 3 s
USP Minimum weight of sample (k = 2, U = 0.1%) 4 g
Interfaces RS-232 (optional), Bluetooth (optional), Ethernet (optional), USB-Device (optional), KUP, WiFi (optional)
Adjustment options Adjusting with external weight
Recommended adjusting weight 300 g (F1)
Ambient temperature -10 °C – 40 °C
Dimensions weighing surface (Ø) 106 mm
Material draught shield metal, lacquered
Material housing cast aluminium
Dimension housing (W×D×H) 180×310×85 mm
Material weighing plate stainless steel
Net weight approx. 2,4 kg
Construction type of the scale Single-range balance
€688.50 Regular price €765.00