One must be proficient and strictly implement the rules of use. 2. When taking the microscope, be sure to hold the curved arm with one hand and the base with the other hand. The microscope cannot be tilted to prevent the eyepiece from sliding out of the upper end of the lens barrel. Handle the microscope lightly when handling it. 3. During observation, the position of the microscope cannot be moved casually. All the optical parts of the laboratory optical microscope can only be wiped with special lens cleaning paper, not with other objects, or with the fingers to prevent the lens from being stained by sweat. 5. Keep the microscope dry and clean to avoid contamination by dust, water and chemical reagents. 6. When changing the objective lens, do not move the animal lens, only turn the converter. 7. Never turn the focus handwheel at will. When using the micro-focusing knob, use light force, slow rotation, and don't turn hard when not. 8. It is not allowed to arbitrarily disassemble the parts on the microscope. It is strictly forbidden to disassemble the objective lens arbitrarily, so as not to damage the screw of the converter, or make the low-magnification objective lens out of focus after the screw is loose. 9. When using high magnification objectives, do not use the coarse focus handwheel to adjust the focal length to avoid excessive movement distance and damage to the objective lens and slides. Before returning it in ten days, you must check whether the lens of the objective lens is contaminated with water or reagents. If it is, wipe it clean, and wipe the stage clean, then put the microscope in the box, and pay attention to the lock box. The tattoo chair material:metal frame with chormed, color could be customized.
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