A.KRÜSS Optronic Analogue Abbe Refractometer AR4

Item number: KRÜSS_2017

EAN: 4064343289436

Category: A.KRÜSS Optronic

Manufacturer: Krüss

Now only 982,30 €

Excluding 19% VAT. , plus shipping (Standard)

(including 19% VAT. 1.168,94 €)


A.KRÜSS Optronic Analogue Abbe Refractometer AR4
The modern classic!

The Abbe refractometer was developed in 1869 by Ernst Abbe and is used to determine the refractive index otherwise known as the index of refraction. It is based on the principle of total reflection which occurs at the boundary between the prism and the sample. The refractive index of the prism determines the upper limit of the measurement range, as it always has to be greater than that of the sample. With the AR Series, Krüss has two models of the Abbe refractometer in its range. These are easy to use and require only a small sample volume. These devices allow samples in the form of solids or pastes to be measured just as easily as liquids. Furthermore, colouration or clouding scarcely affect the measurement result. Besides the refractive index, the solid content can be determined in %Brix. To determine the refractive index of solids, a contact liquid with an average refractive index is required. The refractive index of a sample is dependent on the wavelength of the light used for the measurement and on the temperature. As the temperature increases, the refractive index drops. That is why our Abbe refractometers have thermostat connections on both the illumination prism as well as the measurement prism.

The AR4 offers readings via ocular. It has an adjustable scale, temperature controlled prisms, and thermostat connections for prisms. The refractive index of a sample depends on the wavelength of the light used in measurement. That is why we supply our AR4 with LED illumination for the measuring prism. This has the standard wavelength of 589 nm and has a very long service life (>100.000 h). Refractometers also have scale illumination. Since the refractive index is also temperature-dependent, our Abbe refractometers feature thermostat points on both the lighting and the measurement prisms. A digital thermometer is supplied. Other wavelengths are available on request. Our Abbe refractometers can easily be checked and calibrated with the calibration plates provided and comply with all requirements of ASTM D1218.

Fields of application
Determination of mixing ratios, quality and quantity inspection in the following industries:
  • Beverages
  • Food
  • Sugar / sweeteners
  • Chemicals
  • Flavours
  • Petrochemicals
  • Cosmetics / hygiene
  • Metalworking
  • Pharmaceuticals
  • Water / effluent
  • Education / research

Analytical device: refractometer
Shipping weight: 4,00 Kg
Product weight: 2,50 Kg
Measurement range 1,3000-1,7000 nD
0-95 %Brix
Accuracy ±0,0002 nD
±0,1 %Brix
Resolution 0,0005 nD
0,25 %Brix
Thermometer Digital thermometer: -40-120 °C
Illumination Scale illumination
LED-illumination (590 nm) for prism
Display Readings via ocular
Special features Adjustable scale
prisms can be temperature-controlled
thermostat connections for prisms
Power supply 110/220 V, switchable
Dimensions in cm 10,0 x 27,0 x 19,0
Weight 2,5 kg