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庫存編號 181-1150
製造零件編號ORF 2UM
BrandKern
HK$3,652.60
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 181-1151
製造零件編號ORF 2WM
BrandKern
HK$3,652.60
單位
- 22 (Vol. AP) %, 25 (KMW) °KMW, 35 (Mass SW) %, 150 (Oechsle) °Oe 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庫存編號 181-1155
製造零件編號ORF 85BM
BrandKern
HK$4,432.97
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 899-8019
製造零件編號ORA 20BA
BrandKern
HK$913.15
單位
Sugar 20% 0% - - - Analogue - - - - - - -
RS庫存編號 899-8037
製造零件編號ORA 4UA
BrandKern
HK$1,039.85
單位
Industry / Automotive 35% 30% - - - Analogue - - - - - - -
RS庫存編號 899-8012
製造零件編號ORA 1SA
BrandKern
HK$1,206.74
單位
Salt 100% 0% - - - Analogue - - - - - - -
RS庫存編號 899-8031
製造零件編號ORA 80BB
BrandKern
HK$859.44
單位
Sugar 80% 0% - - - Analogue - - - - - - -
RS庫存編號 136-3534
製造零件編號ORT 1RS
BrandKern
HK$7,412.63
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 181-1147
製造零件編號ORF 1PM
BrandKern
HK$3,652.60
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 899-8025
製造零件編號ORA 4FA
BrandKern
HK$913.15
單位
Industry / Automotive - - - - - Analogue - - - - - - -
RS庫存編號 181-1154
製造零件編號ORF 5UM
BrandKern
HK$3,671.16
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 899-8028
製造零件編號ORA 32BA
BrandKern
HK$1,206.74
單位
Sugar 32% 0% - - - Analogue - - - - - - -
RS庫存編號 899-8021
製造零件編號ORA 3SA
BrandKern
HK$913.15
單位
Salt 28% 0% - - - Analogue - - - - - - -
RS庫存編號 181-1149
製造零件編號ORF 1RS
BrandKern
HK$4,825.74
單位
Salt - - ±0.0005 (Refractive Index) nD - - Digital AAA - Battery 133 x 65 x 38mm 200g 38mm 133mm
RS庫存編號 899-8015
製造零件編號ORA 1UA
BrandKern
HK$1,039.85
單位
Industry / Automotive 40% 0% - - - Analogue - - - - - - -
RS庫存編號 181-1153
製造零件編號ORF 45BM
BrandKern
HK$3,652.60
單位
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庫存編號 136-3530
製造零件編號ORA 6HA
BrandKern
HK$1,079.75
單位
- 30% 12% - 0.1 % - Digital/Optical Rechargeable Battery - Battery 130 (Dia.) x 200mm 140g - 200mm
RS庫存編號 899-8034
製造零件編號ORA 4RR
BrandKern
HK$913.15
單位
Expert applications - - - - - Analogue - - - - - - -
RS庫存編號 181-1152
製造零件編號ORF 3SM
BrandKern
HK$3,815.81
單位
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