For oil immersion lenses, wipe off oil with a lens tissue. The mixing of different immersion media or different batches of the same medium (e.g., the immersion oil IMMERSOL F™) may result in … Wipe oil from the slide thoroughly with a Kimwipe. Natural oils can harden on the lens otherwise. When you desire to remove oil from a slide and an immersion lens after using, for example, cedar oil, you would use Xylene to remove the oil. All areas on the instrument, such as portions of the base or stand, should be routinely checked for any traces of immersion oil, which if found, may be removed with laboratory towels or soft cotton cloth. Lower the stage and then remove the slide when you are done. 6. Both the objective lens and sample are immersed in a transparent oil of high refractive index so that high magnifications can be achieved while still maintaining good resolution (for more detail, please click here).. Not every lens can be used for oil immersion. Be sure you have a cover slip on your sample. Immersion Oil Oil i mmersion microscopy is a major culprit in that the improper cleaning and use of the immersion oil leads to debris that attaches to the residual oil as it accumulates. The front lens of an immersion objective should be cleaned to remove residue both after use and, additionally, before fresh immersion liquid is applied. Occasionally dust may build up on the lightly oiled surface so if you wish to completely remove the oil then you must use an oil soluble solvent. 7. How to clean an objective Very small amounts of dust/dirt can make images substantially worse It is important to remove the oil after use (Oil traps dirt and actually slowly dissolves the glue in objectives) Be careful cleaning as the process could damage the objectives if done badly - remember they cost $500 to $12,000 each - be gentle and don't use too much of any cleaning Then, wick away the remaining water and finally, wipe the lens clean with lens tissue. Oil immersion is a technique used to increase the resolving power of a microscope. If oil has already built up, use a lens tissue soaked in the correct solvent for the oil being used. If you are using a 100x objective with immersion oil, just simply wipe the excess oil off the lens with a kimwipe after use. When you reach the 100x objective, raise the objective up, and place a drop of immersion oil on top of the cover slip. Use immersion oil only with the 100X objective (oil immersion lens) in place. 7. Tip 4: Clean immediately after using immersion oil. 5. Clean up! Use a Kimwipe or lens paper and the alcohol in the labeled jars. You don’t want your oil mixing with the sample or water, and you certainly don’t want to get your sample or water on (or in!) the objective lens. Cleanse stage should any oil have spilled on it. 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