Cost-effective transmitted light Abbe refractometer
The AR4 is a classic, analog Abbe refractometer. The measurement device offers an inexpensive solution for determining the refractive index using the classic transmitted light method. It is also suitable for measuring solutions, fats and oils of all kinds. It is popular in practice because it is easy to clean, even with oily samples.
The scales can be set manually using the drive knob and the refractive index and Brix values are read off using an eyepiece. The temperature is measured with the integrated digital thermometer and displayed on the LCD. The AR4 refractometer can be connected to a circulation thermostat for temperature control.
This device can be used in a wide range of applications: for identity checking, purity control and concentration determination of raw materials, semi-finished products and end products or for determining the sugar concentration as well as for incoming and outgoing goods inspection. It has also proven itself in use in hospital laboratories, training and pharmacies.
Basic functions
- Measurement of liquid and viscous samples, regardless of their viscosity
- Measurement of films possible and of solid samples that have at least one smooth side
- Wide measurement range from nD 1.3000-1.7200 and 0-95 %Brix
- Reading the measured values via an eyepiece
- Integrated thermometer
- Hose connections for temperature control with a circulation thermostat
- Robust housing and easy handling
- Temperature display on LED display
Practice video
Abbe refractometer – Temperature control with the circulation thermostat
Absolutely independent of the ambient temperatures, accurate and reproducible measurements can be achieved with circulation thermostats in the Abbe refractometer.
The PT31 circulation thermostat is small and very easy to connect.
Directly to the circulation thermostat
Application Abbe refractometer
The AR4 makes a clear statement as a basic appliance: The temperature is displayed digitally – without the need for a rising thermometer. This not only eliminates the tedious reading of an analog column, but also the typical sources of error that can occur with classic thermometers. The technically superior T-measurement of the Abbe refractometer ensures stable, reproducible results and clearly sets the AR4 apart from the competition.
Application example: Schools and educational institutions
- Application: Ideal for lessons, teaching and laboratory exercises. For example, demonstration of transmitted light methods for formulation work and simple quality checks.
- Quick measurement and determination of sugar concentration (jams, honey, syrup, seasoning sauces, mustard, mayonnaise)
- Advantage: easy handling, easy cleaning, the digital temperature display enables clear, error-free readings
Application example hospitals and pharmacies
- Valid norms/standards: Pharmacopoeias (BP,JP, Ph. Eur.), GLP
- Application: Outgoing goods inspection or analysis of raw materials. Control of drugs according to Pharmacopoeia (infusion solutions, blood serums, pills, pastes, dialysis preparations) or analysis of body secretions
- Advantage: High reliability with simple operation, availability of the BRIX scale, possibility of temperature compensation
Expertise & function refractometer
Download application areas
Technical data
| Spezifikation | Abbe-Refraktometer AR4 Modell |
|---|---|
| Messbereich |
nD 1,3000–1,7200 0–95 %Brix |
| Temperierbereich 1) | Nachrüstbar |
| Messgenauigkeit 2) |
nD ±0,0002 ±0,1 %Brix |
| Temperiergenauigkeit 1) | Nachrüstbar |
| Auflösung |
nD 0,0005 0,25 %Brix |
| Wellenlänge | 589 nm |
| Temperaturmessgenauigkeit | ±0,5 °C |
| Temperaturmessauflösung | 0,1 °C |
| Temperierung 1) | Nachrüstbar |
| Skalen | Brechungsindex (nD), Konzentration von Saccharose (%Brix) |
| Justierung | Über Stellschraube |
| Probenberührende Teile | Optisches Flintglas (SF4) |
| Bedienung | Triebknopf |
| Maße (B x H x T) | 100 mm x 270 mm x 190 mm |
| Gewicht | 2,5 kg |
| Betriebsspannung | 7,5 V |
| Leistungsaufnahme (Max.) | 15 W |
¹) Erfordert Umwälzthermostat PT31
²) Bei Normalbedingungen für Messung des Brechungsindex (λ = 589 nm, 20 °C, 1013 hPa, 50 % rel. Feuchte)
Cleaning tips
- Thorough and regular cleaning of the Abbe refractometer ensures that measurements remain reliable and reproducible. The measurement prism is the most sensitive component and should be cleaned immediately after each analysis to prevent samples from drying out or hardening. For daily cleaning, a soft, lint-free cellulose cloth is sufficient to absorb the sample and then wipe with a slightly moistened cloth.
- Between measurements of very different samples, a control measurement with water or a suitable reference is recommended to ensure the cleaning success. This protects the Abbe refractometer in the long term and delivers consistently accurate results.
Complete overview of cleaning agents & tips
Documents
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Calibration standard
-
Kalibrierstandard Abbe-Refraktometer
54,00 €Kalibrierstandard nD 1,5167 AR-Serie
Consumables
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Zimtöl als Kontaktflüssigkeit
15,00 €Zimtöl 5 ml als Kontaktflüssigkeit für Kalibrierstandard
Accessories
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Umwälzthermostat Modell PT31
1.589,00 €Modell für den Temperierbereich 8-35 °C
-
Thermofühler AR4
52,00 €Kabel und Temperaturfühler für AR4
