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Abbe Refractometer

Our New Abbe Refractometer Model R-4 with Improved Optics and Eye Piece is a reliable and accurate instrument designed for measuring Refractive Index and Dispersion of Liquids and also determining the Brix of aqueous solutions. This instrument has been specially designed with particular regard to its various applications in Pharmaceutical and Sugar Industry in addition to its suitability in Educational Institutions, Chemical Industries, Research and Test Laboratories etc. Accuracy, ease,and convenience of use along with low maintenance is the special feature of this Refractometer used for Scientific Analysis and Industrial Process Control.

The Refractometer method is an easy and quick method. It requires only few drops of the liquid to be tested to obtain a pin point accuracy of the Refractive Index measurements. The introduction of Water Jacketed Prism Box in this design enables the Refractometer to be connected to a Circulating Thermostat Bath for precise temperature control. For measuring the temperature in the Prism box a Thermometer is also provided. The Instrument employs a day light illuminating system requiring only natural day light. However artificial light can also be used and is recommended. The system incorporates a Compensator to compensate for dispersion of the medium under test. This enables Measurement of Refractive Index in White Light.
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Key Features

  • Determines Refractive Index and Dispersion of Solids & Liquids
  • Complete Operating Range for both Refractive Index and Brix
  • Seperate Eye-piece for reading the Scale & viewing the Demarcation Shadow
  • Completely sealed optics for operation in tropical regions and extreme operating conditions
  • Dual graduations of Refractive Index & Brix Percentage
  • Water Jacketed Prism Box which can be connected to Circulating Water Bath for temperature maintenance
  • Rotating Prism for Easy application of Test Samples
  • Optional Digital Thermometer for reading Prism Temperature
  • Sturdy Easy to use and maintain
  • High Accuracy, Latest Design, Easy to use Refractometer

Technical Specifications*

Model

R-4

Measuring Range

nD 1.300 to 1.700

Measuring Range, Sugar

0 to 95%

Measuring Accuracy

nD 0.001 (direct reading) & 0.0001 (by estimation).

Measuring Accuracy, Sugar

1% by direct reading and 0.1% by estimation.

Scale

Translucent Glass with minimum division
nD 0.001 & Sugar 1%.

Digital Temperature Indicator

Optional

Temperature Range

10 deg C to +100 deg C

Resolution

0.1 deg C

Accuracy

0.5 deg C, 1 digit

Output for Scale and Prism Illumination

Available

Note: Due to process of continuous improvements, specifications are subject to change without prior notice

Accessories

  • Calibrated Standard Glass Test Piece
  • Contact Liquid (5ml Bottle)
  • Measuring Prism Set
  • Illuminating Prism Set
  • Scale
  • Thermometer in Jacket
  • Digital Thermometer


Precise Analytical Measurement

Engineered for accuracy, the Abbe Refractometer delivers reliable refractive index and Brix readings, ensuring dependable results for laboratory, industrial, and research applications. Its advanced optics and adjustable controls provide consistency in varying operational environments.


Durable Construction and User-Friendly Operation

Constructed with corrosion-resistant metal and a robust optical glass prism, this refractometer stands up to intensive laboratory use. Its benchtop design, easy-to-read eyepiece scale, and simple manual controls make the measurement process straightforward and efficient.


Versatility Across Sample Types

Tailored for both liquids and translucent solids, the Abbe Refractometer supports sample volumes as low as 0.1 ml. Its adaptable chamber and broad temperature range facilitate diverse analyses, making it a valuable tool for research, food industry, and quality inspections.

FAQs of Abbe Refractometer:


Q: How do I calibrate the Abbe Refractometer for accurate measurements?

A: Calibration should be performed using distilled water or standard calibration liquids. Place a drop in the sample chamber, adjust the compensation dial as needed, and align the internal eyepiece scale until the correct reference value is displayed. Regular calibration ensures consistent accuracy.

Q: What types of samples can the Abbe Refractometer measure?

A: This instrument is designed for transparent or translucent liquids and solid samples. It is commonly used to assess the refractive index and Brix in substances like juices, oils, chemicals, and pharmaceutical solutions, provided they are compatible with the sample volume (0.10.3 ml).

Q: Where is the best place to operate the Abbe Refractometer?

A: The device is intended for benchtop use in laboratories, research facilities, or industrial environments. Ensure it is placed on a stable surface in conditions with temperature between 10C and 50C, and a non-condensing humidity of up to 95% RH.

Q: When should temperature compensation be used during measurement?

A: Temperature compensation should be activated when the sample temperature differs from standard calibration conditions. Adjust the built-in temperature compensation dial to match the current sample temperature, ensuring accurate refractive index and Brix readings.

Q: What is the process for cleaning the sample chamber after measurement?

A: After each use, gently wipe the chamber and prism with a soft cloth to prevent residue buildup. Avoid abrasive materials or harsh chemicals to preserve the integrity of the optical components and maintain measurement accuracy.

Q: What benefits does the Abbe Refractometer offer over other types?

A: The unit features high measurement accuracy (0.0002 RI, 0.1% Brix), adjustable temperature control, robust build quality, and easy manual operation. Its compatibility with both liquids and solids, and rapid response time, make it ideal for diverse analytical applications.

Q: How is the refractive index or Brix value displayed and interpreted?

A: Readings are viewed through an internal eyepiece scale in the optical prism view. As you adjust the control dials, the interface displays a sharp line where measurements can be read instantly. Both refractive index and Brix percentage values are easily interpreted from the scale.

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