Refractometers

A refractometer is a laboratory or field instrument used for measuring concentrations of aqueous solutions. It requires only a few drops of liquid and is used as throughout the food, agricultural, chemical, and manufacturing industries.
Refractometers measure the degree to which light changes direction, called the angle of refraction. A refractometer takes the refraction angles and correlates them to refractive index (nD) values that have been established. Using these values, you can determine the concentrations of solutions.

Types of refractometers
  • Hand refractometer facilitate convenient and rapid measurement of concentration in a number of liquid and semi-solid samples. It works on critical angle principle in which lenses and prisms project a shadow line onto a small glass reticule inside the instrument, which is then viewed through a magnifying eyepiece.
  • Digital refractometers operate on the same critical angle principle as a handheld refractometer. The difference is that light from an LED is focused on the underside or a prism element. When a liquid sample is applied to the measuring surface of the prism, some of the light is transmitted through the solution and lost, while the remaining light is reflected onto an array of photodiodes creating a shadow line. Once the position of the shadow line has been automatically determined by the instrument, the internal software will correlate the position to refractive index and display a digital readout.

...
Read more Read less

Filters

Viewing 1 - 9 of 9 products
Results per page
Description Price Refractometer Type Maximum Measurement Minimum Measurement Best Accuracy Resolution Measurement Time Type Battery Type Battery Life Power Source Dimensions Weight Height Length
RS Stock No. 667-2159
Mfr. Part No.HI 96801
$555.29
Each
units
Sucrose +80 °C, 85 %Brix 0 %Brix, 0 °C ±0.2 %Brix 0.1 %Brix, 0.1 °C 1.5s Digital/Optical 9V 5000 Tests Battery 192 x 104 x 69mm 420g 69mm 192mm
RS Stock No. 877-1781
BrandRS PRO
$330.07
Each
units
Mix Cutting Fluids 18% 0% ±0.1 % 0.1 %Brix - - - - - 96 x 60 x 230mm 525g 60mm 230mm
RS Stock No. 344-5507
Mfr. Part No.300003
$482.66
Each
units
Sugar 80% 0% ±1 % 1 % - Optical - - - 1-1/2 (Dia.) x 7mm 538.6g - 7in
RS Stock No. 344-5484
Mfr. Part No.300001
$638.49
Each
units
Sugar 32% 0% ±0.2 % 0.2 % - Optical - - - 1-1/2 (Dia.) x 6-3/4mm 170.1g - 6-3/4in
RS Stock No. 344-5535
Mfr. Part No.300006
$521.42
Each
units
Salt 28% 0% ±0.2 % 0.2 % - Optical - - - 1-1/2 (Dia.) x 6-3/4mm 184.3g - 6-3/4in
RS Stock No. 685-768
Mfr. Part No.52060
BrandRocol
$449.39
Each
units
Grinding Fluids, Mix Cutting Fluids - - - - - - - - - - - - -
RS Stock No. 136-3534
Mfr. Part No.ORT 1RS
BrandKern
$1,353.26
Each
units
- 1.7 nD, 95 % 0 %, 1.3 nD ±0.0002 nD, ±0.1 % ±0.0005 nD, ±0.25 % - Digital/Optical - - - 180 x 90 x 240mm 2kg 240mm 180mm
RS Stock No. 136-3530
Mfr. Part No.ORA 6HA
BrandKern
$194.72
Each
units
- 30% 12% - 0.1 % - Digital/Optical Rechargeable Battery - Battery 130 (Dia.) x 200mm 140g - 200mm
New
RS Stock No. 188-3910
Mfr. Part No.780B
BrandFacom
$254.15
Each
units
- - - - - - - - - - 700 x 235 x 70mm 472g 70mm 700mm