Technical Index of Abbe Refractometer

Technical Index of Abbe Refractometer

1. Main uses and characteristics of Abbe refractometer

Abbe refractometer is an instrument that can measure the refractive index nD and average dispersion nF-nC of transparent, translucent liquids or solids (mainly transparent liquids). If the instrument is connected to a thermostat, the temperature can be measured at 0 ℃ Refractive index nD at -70 ° C.

Refractive index and average dispersion are one of the important optical constants of substances, which can be used to understand the optical properties, purity, and dispersion of substances. This instrument can measure the mass fraction (hammer Brix) of sucrose solution (0-95%, equivalent to a refractive index of 1.333-1.531). Therefore, the instrument is widely used, and it is one of the indispensable common equipment of relevant factories, schools and related scientific research units in the petroleum industry, oil industry, pharmaceutical industry, paint industry, daily chemical industry, sugar industry and geological survey.

2. Main technical indexes of Abbe refractometer

1. Technical parameters of 2W and 2WAJ:

2W

2WAJ

Refractive index ND measurement range

1,300-1,700

1,300-1,700

Refractive index ND measurement accuracy

0.0003

0.0002

Refractive index ND minimum division value

0.001

0.0005

Measuring range of sugar concentration (%)

0-95

0-95

Sugar concentration (%) minimum division value

0.5

0.25

(3) Instructions for use of Abbe Refractometer:

1. The instrument should be placed in a dry, well-ventilated and temperature-appropriate place to prevent the optical parts of the instrument from being damp and moldy.

2. Before and after using the instrument and when changing samples, the working surface of the refracting prism system must be cleaned first.

3. The test sample is not allowed to have solid impurities. When testing the solid sample, the working surface of the refracting prism should be prevented from being roughened or indented. The instrument is strictly forbidden to test samples with strong corrosion.

4. The instrument should avoid strong vibration or impact, to prevent the optical parts from shattering and loosening and affecting the accuracy.

5. If the bulb in the spotlighting system is damaged, you can remove the condenser tube along the axis, replace it with a new bulb, and adjust the left and right position of the bulb (loose the set screw on the side)

Nails), so that the light is concentrated on the light-receiving surface of the refracting prism without obvious deflection.

6. The condenser lens of the instrument is made of plastic. In order to prevent the corrosive samples from damaging its surface, cover the condenser lens with a transparent plastic cover during use.

7. When the instrument is not in use, cover the instrument with a plastic cover or place the instrument in the box.

8. Users are not allowed to disassemble and assemble the instrument at will. If the instrument fails or does not meet the accuracy requirements, it should be repaired in time.

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