Microscope - how to use oil lens?
(1) Before using the oil lens, you must first observe through the low and high power lens, and then move the observation target part to the center of the field of view.
(2) Raise the light collector to the highest position and open the aperture to the maximum.
(3) Turn the objective lens converter so that the high-magnification lens leaves the light hole, drop a drop of cedar oil or BASO lens oil on the slide to be observed, then slowly turn the oil lens, and watch horizontally from the side when switching the oil lens The distance between the lens and the glass slide, so that the lens can be immersed in the oil without crushing the glass slide.
(4) Observe the eyepiece with the left eye, and slowly turn the fine focus screw until the object image is clear. If there is no object image or the target is not ideal, you need to search again. When refinding outside the refueling area, you should follow the procedure: low magnification→high magnification→oil lens. When re-finding in the refueling area, you should follow the procedure: low magnification → oil lens, and do not go through the high magnification lens to prevent oil from contaminating the lens.
(PS: Do not put the high-magnification lens in contact with the oil on the microscope lens, and wipe it clean with detergent in time after contact; after the observation, first convert the oil lens to a low-power lens, and then remove the glass slide to avoid damage to the lens, and use it in time Wipe the lens with lens tissue;)
(5) After the oil lens is used, if you use cedar oil, you need to wipe off the cedar oil on the lens and the specimen with a little xylene on the lens tissue, and then wipe it with dry lens tissue; while BASO advanced microscope oil lens The oil can be wiped off with ordinary lens cleaning paper~
