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[QUOTE=mura_gadi;1563599]Isopropyl alcohol is at 99%, for evaporation.
Some lense manufacturers recommend scientific grade isopropyl alchohol which is as close to 100% as possible for purity and so will leave no residue as it evaporates off the floating dust. Very expensive here though.
Agree with the issue of liquid particularly alchohol getting under the retaining parts and coating edges and leeching out contaminants. Maybe why some lense manufacturers recommend against alchohol and start with spot cleaning.
Last edited by Sunfish; 18-07-2022 at 08:44 AM.
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