Optical Test Instruments — Laboratory & Sugar Refractometer Series

2WAJ Abbe Refractometer

Keywords: Abbe refractometer, refractometer, refractive index meter, sugar refractometer, optical refractometer

Accurate Refractive Index & Sugar Content Measurement — From 1.3000 to 1.7000 nD.

The 2WAJ is an Abbe refractometer that measures the refractive index (nD) and mean dispersion (nF – nC) of transparent and translucent liquids and solids, with a refractive index range of 1.3000–1.7000 nD and an accuracy of ±0.0002 nD. It reads sugar content in saccharose solutions from 0 to 95% (refractive index 1.333–1.531), making it a dependable optical instrument for laboratories, quality control and production.

Based on the critical-angle method, the 2WAJ gives clear, repeatable readings through a 30× reading system. An optional thermostat connection extends temperature-controlled measurement from 0 to 70°C, so you can check refractive index and concentration across a wide range of samples and conditions.

Key Features

1.  Wide Refractive Index Range — Measures 1.3000 to 1.7000 nD with an accuracy of ±0.0002 nD for precise results.

2.  Sugar Content Reading — Determines the percentage of sugar in saccharose solutions from 0 to 95%, ideal for food and sugar refining.

3.  Liquid & Solid Testing — Measures transparent and translucent liquids and solids with a smooth polished surface.

4.  30× High-Magnification Reading — Clear graticule and scale for accurate, easy-to-read values.

5.  Temperature-Controlled Measurement — Thermostat connection enables refractive index measurement from 0 to 70°C.

6.  Mean Dispersion Calculation — Determines the mean dispersion (nF – nC) to evaluate optical performance and purity.

How to Use

1.  Clean the Prisms — Wipe the incident and refracting prism surfaces with a 1:1 alcohol–ether mix to remove any dirt.

2.  Apply the Sample — Drop the tested liquid onto the refracting prism, close the incident prism and lock it with the knob, ensuring a bubble-free, even film.

3.  Focus the Eyepiece — Adjust the diopter ring so the cross-lines appear sharp.

4.  Find the Boundary — Turn the refractive index knob to bring the bright/dark boundary into the center of the cross-lines, then adjust the dispersion knob to remove color fringing.

5.  Read the Value — The scale below the eyepiece field gives the refractive index; for sugary liquids, read the sugar concentration percentage directly.

6.  Clean After Use — Wipe the prisms immediately after testing and store the instrument in its case with desiccant.

Technical Specifications

Applications

1.  Food & sugar refining industry — sugar content measurement

2.  Petroleum & chemical industries — purity and concentration checks

3.  Pharmaceutical & paint manufacturing

4.  Geological survey & quality inspection laboratories

5.  Colleges & research institutes — optical constant determination