VariRef – Full Range Refractometer

The new laboratory refractometer from Schmidt+Haensch.

The VariRef Refractometer provides precise measurements throughout the product life cycle. Instrument maintenance can be done quickly and economically with a multi-point calibration that covers the entire measurement range. The new double isolated Peltier system and precision thermometer allow for fast, precise temperature control while reducing the influence of ambient temperature.

The sample room’s flat design is easy to clean and a variety of sample room covers are available for measuring liquid, solid, hard to clean, or hazardous materials.

VariRef’s modular design allows you to integrate all your VariFamily instruments on one platform.

A pharma-ready module with 21 CFR part 11 compliance is available, including all documents, options, and methods.


  • Liquid and solid samples
  • Modular networking capabilities
  • Multi-point calibration for the entire measuring range
  • User friendly
  • Fast temperature control, rapid measuring results
  • Easy cleaning
  • Maintenance-free
  • 21 CFR part 11 conform
  • ELN; LIMS ready

SCHMIDT + HAENSCH refractometers can be used for purity investigations, sample recognition, dilution control, or composition. They are also used for the characterization of substances or for the determination of substance composition, especially of organic liquids or raw materials. Refractometers are widely used in food, oil, fuel, and other industries to measure and monitor the concentration of components throughout the fabrication process.

VariRef Available Modules:

VariRef A: high standard, high resolution, and repeatability; mainly for research and development and special pharmaceutical applications

VariRef B: different measurement ranges depending on application, highest range of temperature, for all different industries (depending on measurement range)

VariRef C: basic model, most economic version, high-temperature range, for all simple applications such as used in the food industry production labs


Specifications VariRef C VariRef B VariRef A
Measuring scales  Refractive Index (RI), Sucrose (% Brix), Standard scales included, freely definable scales Refractive Index (RI), Sucrose (% Brix), USG
Measuring range  1.3200 – 1.5800 RI / 100% Brix 1.29000 – 1.58000 RI / 100% Brix; 1.32000 – 1.70000 RI / 100% Brix  1.320000 – 1.580000 RI / 100% Brix
Resolution  0.0001 RI / 0.05% Brix 0.00001 RI / 0.01% Brix  0.000001 RI / 0.001% Brix
Precision  ± 0.0001 RI* / ± 0.05% Brix* ± 0.00002 RI* / ± 0.02% Brix* ± 0.00002 RI* / ± 0.02% Brix*
Repeatability  ± 0.0001 RI / ± 0.05% Brix ± 0.00002 RI / ± 0.02% Brix  ± 0.000005 RI / ± 0.006% Brix
Ambient temperature  + 10 °C to + 40 °C
Temperature measurement  Pt 1000 sensor
Temperature range 5 °C to 80 °C  5°C to 100 °C  20 °C (others upon request)
Temperature resolution 0.01 °C
Temperature precision ± 0.03 °C *
Measurement mode  Single sample or flow-through measurement (with optional compartment door)
Prism  Sapphire  Sapphire / YAG Sapphire
Light source/wavelength  LED, interference filter 589 nm
Display  Without user interface or with 7” Touchscreen user interface, 800 x 480 Pixel
Operation  Touchscreen**, Keyboard***, Mouse***, Barcode Reader***, Remote via PC/Tablet/Smartphone with Aquisys3 software***
Interfaces  Ethernet 10/100/1000, RS232, SH connector, USB, WLAN**, Modbus**, Canbus**, Profibus**
Conformity International Pharmacopoea, ASTM, AOAC, DIN, FDA, ICUMSA, and others