Refractometers

Refractometers measure the concentration levels of aqueous solutions by analysing the angle of light refraction in a few drops of liquid and plotting it on a refractive index. By calculating this index – the speed at which light passes through a substance - you can analyse a samples purity and establish the concentration of dissolved materials.

How do refractometers work?

Standard refractometers measure the degree to which light changes direction in transparent substances, which is called the angle of refraction. As light passes through a liquid it creates a bending illusion, and the degree to which it bends depends on the amount of dissolved substance present. A refractometer takes the refraction angles and correlates them to refractive index (nD) values. Typically reported to a ten-thousandths place, you can use these values to determine the concentrations of solutions.

Some refractometers use the Brix scale. A Brix refractometer relates the concentration of sucrose in water to the solutions refractive index.

What are the different types of refractometer?

Hand refractometers allow quick and easy measurement in liquid and semi-solid samples. They work on the critical angle principle in which lenses and prisms project a shadow line onto a small glass reticule inside the instrument, which is viewed through a magnifying eyepiece.

The digital handheld refractometer operates on the same principle but with light from an LED focused on the underside or a prism element. When a 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, the internal software correlates the position to the refractive index to display a reading.

Where are refractometers used?

Refractometers are relied upon for quality control in the food and drink industries. Theyre also used by jewellers to analyse the purity of gemstones and can even be used for home-brewing, monitoring the salinity or specific gravity of water in fish tanks, and making preserves.


...
อ่านเพิ่มเติม อ่านน้อยกว่า

คัดกรอง / Filters

กำลังดูสินค้า 1 - 17 รายการจาก 17 รายการ / Viewing 1 - 17 of 17 products
ผลการค้นหาต่อหน้า / Results Per Page
รายละเอียดสินค้า / Description ราคา / 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
Brand :RS PRO
THB5,756.04
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
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.HI 96801
THB12,927.55
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. 136-3534
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.ORT 1RS
Brand :Kern
THB30,769.59
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. 344-5535
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.300006
THB12,654.91
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. 899-8031
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.ORA 80BB
Brand :Kern
THB4,804.30
Each
Units
Sugar 80% 0% - - - Analogue - - - - - - -
RS Stock No. 181-1152
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.ORF 3SM
Brand :Kern
THB14,384.62
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. 344-5507
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.300003
THB13,555.40
Each
Units
Sugar 80% 0% ±1 % 1 % - Optical - - - 1-1/2 (Dia.) x 7mm 538.6g - 7in
RS Stock No. 181-1154
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.ORF 5UM
Brand :Kern
THB14,384.62
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. 181-1150
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.ORF 2UM
Brand :Kern
THB14,384.62
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. 344-5484
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.300001
THB12,133.48
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. 188-3910
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.780B
Brand :Facom
THB6,212.46
Each
Units
- - - - - - - - - - 700 x 235 x 70mm 472g 70mm 700mm
RS Stock No. 181-1153
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.ORF 45BM
Brand :Kern
THB14,384.62
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. 181-1149
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.ORF 1RS
Brand :Kern
THB18,192.31
Each
Units
Salt - - ±0.0005 (Refractive Index) nD - - Digital AAA - Battery 133 x 65 x 38mm 200g 38mm 133mm
RS Stock No. 181-1147
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.ORF 1PM
Brand :Kern
THB14,384.62
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. 181-1151
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.ORF 2WM
Brand :Kern
THB14,384.62
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. 136-3530
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.ORA 6HA
Brand :Kern
THB4,421.67
Each
Units
- 30% 12% - 0.1 % - Digital/Optical Rechargeable Battery - Battery 130 (Dia.) x 200mm 140g - 200mm
RS Stock No. 181-1155
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.ORF 85BM
Brand :Kern
THB16,711.54
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
Related Products
DiSt 3: Water conditioning (softener, demineralisation, aquariums, pollution ...
Description:
DiSt 3: Water conditioning (softener, demineralisation, aquariums, pollution control),DiSt 4: Agriculture, horticulture, hydroponics, cooling towers, boiling and steam heating plants, water purification,Pure H2O: Pure water, distilled and de-ionised water, steam cleaning, PCB washing, battery checking. High ...
These pH and conductivity meters provide continuous process ...
Description:
These pH and conductivity meters provide continuous process monitoring at low cost requiring little maintenance.pH meter HI981402: plastic HI1286 electrode (included), double junction, with PTFE junction, 2 metres of cable and BNC connector.Conductivity meters: Each device includes a probe with ...
Floating, waterproof, easy to use with replaceable electrodes, ...
Description:
Floating, waterproof, easy to use with replaceable electrodes, these meters are a must have piece of measurement equipment. The HI-98311 and HI-98312 combine a sleek pocket sized design with accuracy.Featuring a large LCD display enabling users to read pH and ...
These pocket testers combine precision and simplicity. Recommended ...
Description:
These pocket testers combine precision and simplicity. Recommended for quick and accurate readingsFor use in aquariums, swimming pools, water treatment or industryStrong and ergonomic casing ensures a good gripLarge displayGraphite conductivity sensors guarantee repeatability since they do not oxidise.Supplied ...