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. You can find out more in our complete guide to refractometers.

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庫存編號 899-8034
製造零件編號ORA 4RR
BrandKern
TWD3,407.00
單位
Expert applications - - - - - Analogue - - - - - - -
RS庫存編號 181-1147
製造零件編號ORF 1PM
BrandKern
TWD13,627.00
單位
- 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庫存編號 685-768
製造零件編號52060
BrandRocol
TWD6,329.00
單位
Grinding Fluids, Mix Cutting Fluids - - - - - - - - - - - - -
RS庫存編號 344-5484
製造零件編號300001
TWD11,983.00
單位
Sugar 32% 0% ±0.2 % 0.2 % - Optical - - - 1-1/2 (Dia.) x 6-3/4mm 170.1g - 6-3/4in
RS庫存編號 899-8021
製造零件編號ORA 3SA
BrandKern
TWD3,407.00
單位
Salt 28% 0% - - - Analogue - - - - - - -
RS庫存編號 136-3530
製造零件編號ORA 6HA
BrandKern
TWD4,008.00
單位
- 30% 12% - 0.1 % - Digital/Optical Rechargeable Battery - Battery 130 (Dia.) x 200mm 140g - 200mm
RS庫存編號 344-5535
製造零件編號300006
TWD12,498.00
單位
Salt 28% 0% ±0.2 % 0.2 % - Optical - - - 1-1/2 (Dia.) x 6-3/4mm 184.3g - 6-3/4in
RS庫存編號 899-8028
製造零件編號ORA 32BA
BrandKern
TWD3,407.00
單位
Sugar 32% 0% - - - Analogue - - - - - - -
RS庫存編號 181-1149
製造零件編號ORF 1RS
BrandKern
TWD17,234.00
單位
Salt - - ±0.0005 (Refractive Index) nD - - Digital AAA - Battery 133 x 65 x 38mm 200g 38mm 133mm
RS庫存編號 188-3910
製造零件編號780B
BrandFacom
TWD6,115.00
單位
- - - - - - - - - - 700 x 235 x 70mm 472g 70mm 700mm
RS庫存編號 181-1155
製造零件編號ORF 85BM
BrandKern
TWD15,831.00
單位
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庫存編號 344-5507
製造零件編號300003
TWD13,388.00
單位
Sugar 80% 0% ±1 % 1 % - Optical - - - 1-1/2 (Dia.) x 7mm 538.6g - 7in
RS庫存編號 899-8025
製造零件編號ORA 4FA
BrandKern
TWD3,407.00
單位
Industry / Automotive - - - - - Analogue - - - - - - -
RS庫存編號 136-3534
製造零件編號ORT 1RS
BrandKern
TWD27,654.00
單位
- 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庫存編號 899-8037
製造零件編號ORA 4UA
BrandKern
TWD3,407.00
單位
Industry / Automotive 35% 30% - - - Analogue - - - - - - -
RS庫存編號 899-8031
製造零件編號ORA 80BB
BrandKern
TWD3,206.00
單位
Sugar 80% 0% - - - Analogue - - - - - - -
RS庫存編號 181-1150
製造零件編號ORF 2UM
BrandKern
TWD13,627.00
單位
- 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
RS庫存編號 877-1781
BrandRS PRO
TWD5,956.00
單位
Mix Cutting Fluids 18% 0% ±0.1 % 0.1 %Brix - - - - - 96 x 60 x 230mm 525g 60mm 230mm
RS庫存編號 181-1154
製造零件編號ORF 5UM
BrandKern
TWD13,627.00
單位
- 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
RS庫存編號 667-2159
製造零件編號HI 96801
TWD11,981.00
單位
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