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- types of glass
- proper cleaning
- Port glass: clean your port glass on a regular basis! Use lens cleaner is a spray bottle (best) or 99.9% isopropyl alcohol. Do not use windex or 50% vinegar, 50% water mixtures unless you are certain they won't damage whatever type of optical glass you have in your ports. Damage to the coating of the optical glass can happen if you're using the incorrect cleaner or rubbing to vigorously. Lens cleaner is your safest option if you are unsure. Let the liquid do the work. Spray liberally and clean gently with a microfiber cloth or paper towels. If you can see the action of the film reflected on the port glass IT’S TIME TO CLEAN IT.