3
Introduction
Safety Precautions
Maintenance
Thank you for purchasing this VEE GEE Refractometer. With the user in mind, VEE GEE Refractometers are built
from modern designs and, with proper care, this instrument should provide many years of reliable performance.
It’s recommended this manual is read entirely before using the refractometer for the rst time.
VEE GEE Model C10 Abbe Refractometer is designed to measure the refractive index (nD) values of transparent and
translucent solids and liquids. A constant temperature circulator can be attached to this instrument to stabilize
refractive index readings and add to the instrument’s accuracy and reproducibility. The temperature range should
be kept between 0°C and 70°C.
Measuring nD values is useful for many types of applications. Since every transparent and translucent liquid and
solid has a specic refractive index, the instrument can be used for identication, to check purity, etc. The Brix scale
can be used for measuring the concentration of water soluble solutions such as salt, sucrose, urine, oils, sugar, etc.
Abbe Refractometers are often used as the standard for checking handheld refractometers and results from other
types of instruments because of its consistent and reliable results.
This refractometer is an optical instrument. Do not shake or jolt the instrument. The impact may damage or
cause the optical components to shift which will result in inaccurate readings.
The prism is made of optical glass and is susceptible to scratches -- do not apply any rough or abrasive
material and take care when cleaning the prism.
After each use, clean the primary and secondary prism surfaces with a soft cloth or tissue dampened in
water and wipe off with a dry cloth or tissue.
Do not hold the refractometer under a stream of water from a faucet. Do not splash it with or dip it in water.
If the surface of the prism becomes coated with an oily solution or similar, it will repel test samples and affect
readings. If this occurs, the prism should be cleaned with a mild detergent or similar solvent.
Keep the instrument in a dry, well-ventilated room.
Inspection
Upon receiving your VEE GEE Model C10 Abbe Refractometer, check to see that all parts are functioning and
focusing properly and that the following items are supplied with your instrument:
1. Digital Thermometer w/ LR44 Batteries (1 set)
2. 1.5160nD Glass Standard (1 ea.)
3. Calibration Screwdriver (1 ea.)
4. Operation Manual (1 ea.)
1. The refractometer body can be cleaned using water and mild detergent with a soft cloth or tissue. Do not use
harsh chemicals as this may damage the painted surfaces. Do not immerse or allow large amounts of water to
splash onto the instrument.
2. After each use, clean the prisms and any over-spill using water and mild detergent then wipe dry with a soft
cloth or tissue and allow to air dry.
3. Use only specially formulated lens cleaning uids and tissues to clean the optical components of the instrument. Failure
to do so may result in scratched lens surfaces.
