Refractometer - Precision instrument
Refractometer | Refractometer Beer, Salt, Alcohol
Refractometer optical measurement of Wort, Salt, Alcohol ...
A refractometer is an optical measuring instrument that can determine the refractive index of a fluid. On the basis of the refractive index of a liquid, certain liquids can be identified and a determination of the quality determined.
Refractometers are very easy to use. With the supplied pipette, place 1 drop of the liquid to be analyzed on the refractometer plate and then clamp it between the two glass plates. Now look through the viewing hole and point the refractometer to the light. Just turn on the viewing hole until you can read the value and scale sharply.
A refractometer is a very useful and indispensable tool during brewing. If you want to start brewing seriously and correctly, you must definitely have a good and reliable refractometer. With our refractometer you measure both the Wort SG, Salt, Alcohol...
There are several calculators available to correct the values, take a look at Brewersfriend on this site, you will find more explanation and information about using a refractometer, converting and calculating the values and more interesting news about brewing
Our refractometer comes in a complete kit with everything you need. A new qualitative refractometer in a sturdy and protective box. Mini screwdriver to calibrate the refractometer, a pipette to put the fluid on the prism, a microfibre cloth to clean the refractometer and a manual.
Refractomter – Operation manual
Always store your refractometer at room temperature in a dry environment. Open the daylight plate and place 2 or 3 drops on the prism. Close the daylight plate and make sure that the liquid spreads across the entire surface of the prism. Check that there are no air bubbles or dry spots,. If you do see any bubbles or dry spots, you must add more liquid. Allow the sample liquid to adjust to the temperature of the refractomter for about 30 seconds to 1 minute. This is very important because the sample needs to be at the exact same temperature as the refractometer for accuracy.
When your sample is adapted to the temperature of the refractometer, you can go to the next step. Point the prism towards the direction of a light source and look into the eyepiece. Focus the eyepiece until you will clearly see a circle and a scale (sometimes more than one scale). The upper part of the circle is blue and the bottom part of the circle is white.
The result is where the blue and white line meet eacht other on the scale.
Refractometer – Calibration
Place a few drops of distilled water on the prism of the refractometer, and wait 30 seconds until the sample is adjusted to the temperature of the refractometer. Hold the refractometer to a source of light and look through the eyepiece. Always calibrate the refractometer at room temperature (20°C).
Look into the eyepiece and turn the calibration screw until the boundary between the upper blue field and the lower white files are exactly on the zero scale. Your refractometer is now recalibrated.
Refractometer – Maintenance
- Accurate measurement depends on careful calibration. The prism and sample must be at the same temperature for accurate results.
- Don’t expose the instrument to damp or humid working conditions, and never immerse the refractometer in water.
- Never measure abrasive or corrosive materials with a refractometer. They can damage the sensitive prism.
- Always clean the prism of the refractomter with a clean microfiber towel. There is a microfiber towel included in the box. Failing to clean the prism on a regular basis will result in inaccurate results and damage to the prism.
- A refractometer is a very sensitive optical instrument. It needs careful handling and storage. Failure to do so can result in damage fo the optical components and its basis structure. With care, this instrument will last for years of reliable service.