Final answer:
To clean soft lenses, carefully remove dust with a brush or air, then wipe with a microfiber cloth and, if needed, a little lens cleaning fluid. Avoid using rough materials and incorrect techniques that can damage the lenses.
Step-by-step explanation:
When it comes to cleaning before removing soft lenses, it's essential to use the proper materials to ensure the lenses are not damaged. Begin by carefully blowing away any grit or dust, or you can use a camel's hair brush designed specifically for lens cleaning. Afterward, gently wipe the lens surface with a clean, soft, lint-free cloth, such as one made from microfiber. Finally, if some smudges persist, apply a little lens cleaning fluid to the microfiber cloth then wipe the lens.
It is also important to be aware of things to avoid when cleaning lenses. Do not use paper towels, nose tissues, or any cloth that is not lint-free, as this can scratch the lenses. Also, avoid using the coarse focusing knob when handling high power objective lenses, and never use immersion oil unless specifically instructed for the lens in question. Always remember to clean any oil off lenses and to cover or store your microscope in a cabinet after use to maintain cleanliness and functionality.