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 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 refractometer

Hand refractometers

Hand refractometers 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

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.


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Description Prix Refractometer Type Maximum Measurement Minimum Measurement Best Accuracy Resolution Measurement Time Type Battery Type Battery Life Power Source Dimensions Weight Height Length
N° de stock RS 667-2159
Référence fabricantHI 96801
205,00 €
Each
Unité
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
N° de stock RS 685-768
Référence fabricant52060
MarqueRocol
178,69 €
Each
Unité
Grinding Fluids, Mix Cutting Fluids - - - - - - - - - - - - -
N° de stock RS 877-1781
MarqueRS PRO
179,16 €
Each
Unité
Mix Cutting Fluids 18% 0% ±0.1 % 0.1 %Brix - - - - - 96 x 60 x 230mm 525g 60mm 230mm
N° de stock RS 899-8021
Référence fabricantORA 3SA
MarqueKern
85,00 €
Each
Unité
Salt 28% 0% - - - Analogue - - - - - - -
N° de stock RS 899-8031
Référence fabricantORA 80BB
MarqueKern
80,00 €
Each
Unité
Sugar 80% 0% - - - Analogue - - - - - - -
N° de stock RS 136-3530
Référence fabricantORA 6HA
MarqueKern
112,50 €
Each
Unité
- 30% 12% - 0.1 % - Digital/Optical Rechargeable Battery - Battery 130 (Dia.) x 200mm 140g - 200mm
N° de stock RS 344-5484
Référence fabricant300001
334,00 €
Each
Unité
Sugar 32% 0% ±0.2 % 0.2 % - Optical - - - 1-1/2 (Dia.) x 6-3/4mm 170.1g - 6-3/4in
N° de stock RS 181-1149
Référence fabricantORF 1RS
MarqueKern
430,00 €
Each
Unité
Salt - - ±0.0005 (Refractive Index) nD - - Digital AAA - Battery 133 x 65 x 38mm 200g 38mm 133mm
N° de stock RS 188-3910
Référence fabricant780B
MarqueFacom
174,50 €
Each
Unité
- - - - - - - - - - 700 x 235 x 70mm 472g 70mm 700mm
N° de stock RS 136-3534
Référence fabricantORT 1RS
MarqueKern
781,88 €
Each
Unité
- 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
N° de stock RS 899-8037
Référence fabricantORA 4UA
MarqueKern
85,00 €
Each
Unité
Industry / Automotive 35% 30% - - - Analogue - - - - - - -
N° de stock RS 899-8015
Référence fabricantORA 1UA
MarqueKern
85,00 €
Each
Unité
Industry / Automotive 40% 0% - - - Analogue - - - - - - -
N° de stock RS 181-1155
Référence fabricantORF 85BM
MarqueKern
395,00 €
Each
Unité
Sugar 1.5100 (Refractive Index) nD, 85 (Brix) % 0 (Brix) %, 1.3330 (Refractive Index) nD ±0.0003 (Refractive Index) nD, ±0.2 (Brix) % - - Digital AAA - Battery 133 x 65 x 38mm 200g 38mm 133mm
N° de stock RS 899-8034
Référence fabricantORA 4RR
MarqueKern
85,00 €
Each
Unité
Expert applications - - - - - Analogue - - - - - - -
N° de stock RS 181-1147
Référence fabricantORF 1PM
MarqueKern
340,00 €
Each
Unité
- 1.050 (Urine) sgU, 1.3900 (Refractive Index) nD, 12 (Serum Protein) g/dL 0 (Serum Protein) g/dL, 1.000 (Urine) sgU, 1.3330 (Refractive Index) nD ±0.0003 (Refractive Index) nD, ±0.001 (Urine) sgU, ±0.1 (Serum Protein) g/dL - - Digital AAA - Battery 133 x 65 x 38mm 200g 38mm 133mm
N° de stock RS 181-1154
Référence fabricantORF 5UM
MarqueKern
340,00 €
Each
Unité
- 0 (CW) °C, 0 (EG) °C, 0 (PG) °C, 40 (Urea) % -50 (EG) °C, -50 (PG) °C, -40 (CW) °C, 0 (Urea) % ±0.2 (Urea) %, ±0.5 (CW) °C, ±0.5 (EG) °C, ±0.5 (PG) °C - - Digital AAA - Battery 133 x 65 x 38mm 200g 38mm 133mm
N° de stock RS 344-5507
Référence fabricant300003
326,00 €
Each
Unité
Sugar 80% 0% ±1 % 1 % - Optical - - - 1-1/2 (Dia.) x 7mm 538.6g - 7in
N° de stock RS 181-1150
Référence fabricantORF 2UM
MarqueKern
340,00 €
Each
Unité
- 0 (CW) °C, 0 (EG) °C, 0 (PG) °C, 1.50 (BF) kg/L -50 (PG) °C, -50 (EG) °C, -40 (CW) °C, 1.00 (BF) kg/L ±0.01 (BF) kg/L, ±0.5 (CW) °C, ±0.5 (EG) °C, ±0.5 (PG) °C - - Digital AAA - Battery 133 x 65 x 38mm 200g 38mm 133mm
N° de stock RS 344-5535
Référence fabricant300006
300,00 €
Each
Unité
Salt 28% 0% ±0.2 % 0.2 % - Optical - - - 1-1/2 (Dia.) x 6-3/4mm 184.3g - 6-3/4in
N° de stock RS 899-8012
Référence fabricantORA 1SA
MarqueKern
85,00 €
Each
Unité
Salt 100% 0% - - - Analogue - - - - - - -