Analogue refractometer

Product family: ORA-U

Refractive index measurement for laboratories and the industry


Refractometer type Handheld refractometer
Scale - Display type Analogue
Area of application Automotive
Measuring method Light refraction
Measurement temperature (°C) 20 °C – 20 °C
Scale for ethylene glycol (°C)
Messbereich Ethylenglykol (°C) -50 °C – 0 °C
Readout ethylene glycol (°C) 1 °C
Skala Propylenglykol (°C)
Measuring range propylene glycol (°C) -50 °C – 0 °C
Teilung Propylenglykol (°C) 1 °C
Skala Wischwasser
Measuring range wash water -40 °C – 0 °C
Teilung Wischwasser 5 °C
Skala Batterieflüssigkeit
Meausring range batterie fluid 1,10 kg/l – 1,40 kg/l
Readout batterie fluid 0,01 kg/l
Scale urea
Measuring range urea 30 % – 35 %
Readout urea 0,2 %
IP protection - complete device -
Dimension (W×D×H) 160×40×40 mm
Product family ORA-U
€ 90,00 *
*plus shipping costs (not applicable for downloads), plus VAT
Available from stock
Compare Technical data sheet Product brochure

Do you have questions? Please get in contact +49 7433 9933-0 or For technical questions please contact:

Ralf Gutbrod
Ralf Gutbrod
Category Manager - Optics, Team Leader - Technical Sales
Tel.: +49 7433 9933-306




  • The models in the KERN ORA-U range are universal, maintenance-free analogue manual refractometers
  • The handy and robust design allows the easy, efficient and sustainable use in everyday life
  • Manually calculated conversions and errors of the user are avoided by multiple selectable scales.
  • These scales are especailly developed, exactly calculated and checked. They are also characterized by their thin and clear lines.
  • The optical system and the prism cover are made of special material which allows a low-tolerance measuring.
  • All models are fitted with an eyepiece which can be adjusted easily and smoothly to different visual capacities
  • Included with the delivery:
    - Storage box
    - Calibration solution
    - Calibration block if necessary
    - Pipette
    - Screwdriver
    - Cleaning cloth
  • Further accessories are available optionally.
  • This model is particularly suitable for measuring and determining urea, glycol concentration, measuring the freezing point of screen wash (CW) and battery fluid (BF). Furthermore, this model is suitable for measuring temperature-exchange systems.
  • The main scope of applications is:
    - Automotive industry: Car-workshops and producers
    - Chemical industry
    - Solar industry: Antifreeze monitoring


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