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 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. 877-1781
BrandRS PRO
PHP10,674.07
Each
units
Mix Cutting Fluids 18% 0% ±0.1 % 0.1 %Brix - - - - - 96 x 60 x 230mm 525g 60mm 230mm
RS Stock No. 667-2159
Mfr. Part No.HI 96801
PHP21,949.67
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. 685-768
Mfr. Part No.52060
BrandRocol
PHP11,623.57
Each
units
Grinding Fluids, Mix Cutting Fluids - - - - - - - - - - - - -
RS Stock No. 344-5535
Mfr. Part No.300006
PHP22,954.12
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. 344-5484
Mfr. Part No.300001
PHP23,504.11
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. 344-5507
Mfr. Part No.300003
PHP24,587.15
Each
units
Sugar 80% 0% ±1 % 1 % - Optical - - - 1-1/2 (Dia.) x 7mm 538.6g - 7in
RS Stock No. 899-8031
Mfr. Part No.ORA 80BB
BrandKern
PHP5,827.41
Each
units
Sugar 80% 0% - - - Analogue - - - - - - -
RS Stock No. 136-3530
Mfr. Part No.ORA 6HA
BrandKern
PHP7,283.42
Each
units
- 30% 12% - 0.1 % - Digital/Optical Rechargeable Battery - Battery 130 (Dia.) x 200mm 140g - 200mm
RS Stock No. 181-1147
Mfr. Part No.ORF 1PM
BrandKern
PHP24,764.81
Each
units
- 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
RS Stock No. 181-1150
Mfr. Part No.ORF 2UM
BrandKern
PHP24,764.81
Each
units
- 0 (CW) °C, 0 (EG) °C, 0 (PG) °C, 1.50 (BF) kg/L 1.00 (BF) kg/L, -40 (CW) °C, -50 (PG) °C, -50 (EG) °C ±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
RS Stock No. 181-1155
Mfr. Part No.ORF 85BM
BrandKern
PHP30,166.88
Each
units
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
RS Stock No. 181-1151
Mfr. Part No.ORF 2WM
BrandKern
PHP24,764.81
Each
units
- 150 (Oechsle) °Oe, 22 (Vol. AP) %, 25 (KMW) °KMW, 35 (Mass SW) % 0 (KMW) °KMW, 0 (Mass SW) %, 0 (Oechsle) °Oe, 0 (Vol. AP) % ± 0.2 (KMW) °KMW, ±0.2 (Mass SW) %, ±0.2 (Vol. AP) %, ±1 (Oechsle) °Oe - - Digital AAA - Battery 133 x 65 x 38mm 200g 38mm 133mm
RS Stock No. 181-1153
Mfr. Part No.ORF 45BM
BrandKern
PHP25,316.26
Each
units
Sugar 1.4098 (Refractive Index) nD, 45 (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
RS Stock No. 181-1152
Mfr. Part No.ORF 3SM
BrandKern
PHP27,232.71
Each
units
Salt 1.4100 (Refractive Index) nD, 28 (Salt (NaCl)) %, 45 (Brix) % 0 (Salt (NaCl)) %, 0 (Brix) %, 1.3330 (Refractive Index) nD ±0.0003 (Refractive Index) nD, ±0.2 (Brix) %, ±0.2 (Salt (NaCl)) % - - Digital AAA - Battery 133 x 65 x 38mm 200g 38mm 133mm
RS Stock No. 188-3910
Mfr. Part No.780B
BrandFacom
PHP14,038.39
Each
units
- - - - - - - - - - 700 x 235 x 70mm 472g 70mm 700mm
RS Stock No. 181-1149
Mfr. Part No.ORF 1RS
BrandKern
PHP32,840.89
Each
units
Salt - - ±0.0005 (Refractive Index) nD - - Digital AAA - Battery 133 x 65 x 38mm 200g 38mm 133mm
RS Stock No. 181-1154
Mfr. Part No.ORF 5UM
BrandKern
PHP24,764.81
Each
units
- 0 (CW) °C, 0 (EG) °C, 0 (PG) °C, 40 (Urea) % 0 (Urea) %, -40 (CW) °C, -50 (EG) °C, -50 (PG) °C ±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
RS Stock No. 136-3534
Mfr. Part No.ORT 1RS
BrandKern
PHP55,528.36
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