AS ONE 3-6580-07 RAB-62 Handheld Refractometer (Brix 28 - 62)

Frequently Asked Questions: Handheld Refractometer Brix 28 - 62 AS ONE 3-6580-07 RAB-62:

1/ What is the RAB-62 handheld refractometer?

The AS ONE 3-6580-07 RAB-62 is a portable optical instrument designed to measure sugar concentration in aqueous solutions, expressed in degrees Brix (°Brix) from 28% to 62%.

2/ Who manufactures the RAB-62 and where is it made?

This model is produced by AS ONE Corporation, a Japanese company specializing in laboratory and industrial instruments, with manufacturing and quality control based in Japan.

3/ What are the key technical specifications?

4/ What accessories are included in the package?

- Driver for scale adjustment (calibration tool)

- Dropper for sample application

- Protective cap for body storage

5/ How do I calibrate the refractometer?

- Wipe the prism surface clean with a soft, lint-free cloth.

- Apply 2 - 3 drops of distilled water onto the prism.

- Close the daylight plate and look through the eyepiece.

- Rotate the calibration driver until the boundary line aligns with “0° Brix.”

Calibration should be performed at the start of each measurement session or whenever the temperature changes significantly.

6/ How do I measure a sample?

- Clean and dry the prism after calibration.

- Place 1 - 2 drops of the sample solution onto the prism.

- Close the daylight plate to spread the liquid evenly.

- Look through the eyepiece and read the Brix value at the boundary line.

Ensure the prism is fully covered and no air bubbles are present for accurate readings.

7/ How should I clean and store the refractometer?

- After each use, rinse the prism with distilled water and gently dry with a soft cloth.

- Avoid solvents or abrasive cleaners that could scratch the prism.

- Store in its protective cap, in a cool, dry place away from direct sunlight and strong impacts.

8/ What common measurement errors should I watch for?

- Fuzzy boundary line: May result from insufficient sample volume or air bubbles; add more liquid and remove bubbles.

- Consistent offset: Indicates miscalibration; recalibrate with distilled water.

- Blurred view: Could stem from moisture on internal optics; open and dry the instrument completely.

9/ Can I measure high-viscosity samples like honey or syrup?

High-viscosity fluids can cling to the prism and distort readings. Best practice is to dilute viscous samples with distilled water, measure the Brix, then calculate the original concentration by accounting for the dilution ratio.

10/ How does the RAB-62 compare to other AS ONE refractometer models?

11/ Where can I purchase the RAB-62 and what is its price?

Please contact QTE Technologies (qtetech.com/en) for best price.

12/ What precautions should I take during use?

- Always calibrate before measuring.

- Use only distilled or deionized water for calibration.

- Handle the instrument gently to avoid prism damage.