Maintenance - OPTIKA MICROSCOPES STEREO Manuel D'instructions

5.0 KnOwIng YOuR MICROSCOPE
The models ST-50 and ST-50LEd are provided with overhanging stand with flexible arm and a stop ring that
prevents the binocular head from being taken down too much
External illumination
The light can be incident, transmitted and if necessary it is possible to use an external cold light source (opti-
cal fiber or lED illumination). By using the correct light it's possible to obtain the best image of your sample.

6.0 MAInTEnAnCE

To take good care of the microscope, the user should avoid the attack of dust and water. If dust and water
come to the microscope, sooner or later, fungus will grow and kill the microscope. Please notice that once
fungus is grown, even after cleaning, the microscope will have a good chance to be re-infected again. Moreo-
ver, grease stain and fingerprints will distort the image, which should be avoided.
Protection against dust
When the instrument is not used for a long period of time, cover it with the enclosed dust cover. never lea-
ve the eyepiece tube open without any covers. Either leave the eyepiece in the tube (recommended if the
microscope is used very frequently) or cover it with wrapping paper or covering cap. Eyepieces and other
optical accessories, when not in use, are recommended to be kept in a dry box to protect them against dust
and water.
Protection against water
The instrument should be kept away from water source, pipeline or water sink. humidity in the room where
the instrument located should be as low as possible (relative humidity should be kept below 70%). All the
optical accessories are recommended to be kept in a dry box when not in use. The use of dehumidifier and
4-hours air conditioning is highly recommended if the surrounding is too humid.
Cleaning
If dust is found on the optical surface, try to remove by air blower or compress air.
For fingerprint, grease stain or dust which cannot be removed by the air blower,  possible methods are re-
commended:
- To breathe lightly on the glass surface and wipe with a clean piece of cloth, lens paper or
cotton swab. Please notice that small cotton fibre may be left onto the lens surface if cotton
swab is used.
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