Leica Hand Refractometer 10440 0-30 Brix Homebrewing Coolant Beer Sugar Wines

US $34.99

  • Dayton, Ohio, United States
  • Jan 30th
Leica Hand Refractometer, (American Optical # 10440)  Industrial Fluid Tester, 0-30% Brix x 2 division. Red rubber body. Automatic temperature compensation. Includes black case. Comes as-is.  A traditional handheld refractometer is an analog instrument for measuring a liquid's refractive index. It works on the critical angle principle by which lenses and prisms project a shadow line onto a small glass reticle inside the instrument, which is then viewed by the user through a magnifying eyepiece. In use, a sample is placed between a measuring prism and a small cover plate. Light traveling through the sample is either passed through to the reticle or totally internally reflected. The net effect is that a shadow line forms between the illuminated area and the dark area. It is where this shadow line crosses the scale that a reading is taken. Because refractive index is very temperature dependent, it is important to use a refractometer with automatic temperature compensation. Compensation is accomplished through the use of a small bi-metallic strip that moves a lens or prism in response to temperature changes. 
Condition:
Used: An item that has been used previously. The item may have some signs of cosmetic wear, but is fully operational and functions as intended. This item may be a floor model or store return that has been used. See the seller’s listing for full details and description of any imperfections. ...
Type Refractometer
Model 10440
Brand American Optical / Leica

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