What is the principle of refractometer design?
Refractometers are designed based on the principle that liquids of different concentrations have different refractive indexes. It can detect the globulin content in colostrum. It has the advantages of fast, accurate, light weight, easy operation and portability, clear vision, and small size.
A refractometer is an instrument that can detect the refractive index ND and average dispersion NF-NC of transparent, translucent liquids or solids. Since different substances have specific refractive indexes, the instrument can detect material properties according to different states. Therefore, the detection results of the refractometer are often used as a basis for detecting the concentration and purity of raw materials, solvents, intermediates and final products, and for identifying unknown samples. , has become one of the indispensable common equipment in scientific research units, especially in the pharmaceutical field.
Instructions:
Open the cover and wipe the detection prism with a clean flannel;
Use a dropper to take 1-2 drops of the solution to be tested, drop it on the detection prism, and gently cover the cover. If necessary, press the cover gently to make the solution evenly distributed on the prism to avoid the generation of bubbles;
Hold the black rubber part of the instrument, face it to a bright place, and keep the instrument as parallel to the ground as possible (do not tilt it up or fall down). Observe the scale inside through the eyepiece. If it is not clear, slowly fine-tune the eyepiece adjustment hand. wheel until the scale can be clearly seen;
At this time, you can clearly see the blue and white dividing line inside the instrument. The scale value of the dividing line is the concentration of the solution.
Refractometer Notes:
This instrument is a precision optical instrument. During use and maintenance, the following matters should be paid attention to:
During use, you must be careful and use it strictly according to the instructions. Do not loosen the connecting parts of the instrument at will. Do not drop, collide, or violently vibrate.
After use, it is strictly forbidden to put it directly into water for cleaning. Use a clean soft velvet cloth dipped in water to wipe it clean. The surface of optical parts should not be bumped or scratched.
The instrument should be stored in a dry place free of dust, oil, acid and other corrosive gases to prevent optical parts from being corroded or moldy.
