wrote:
What does the first sentence mean:
Moisten a microfiber cloth with a mixture of 70% isopropyl alcohol /
30% water.
It means that the screen cleaner is 70% isopropyl alcohol and 30%
water. More commonly, it's called "rubbing alcohol" or "medical
alcohol" and is intended for topical (applied to the skin) use. For
cleaning screens, it's awful. With a laptop, all it does on mine is
smear the surface screen grease around and leave streaks when it
evaporates. Paper towels make the mess even worse.
What works (for me) is a clean and dry microfiber cloth and some light
pressure. The microfiber cloth will absorb the grease and pickup the
dust without any solvents. The problem is keeping the cloth clean. A
new cloth works well, but it doesn't take much use to make a mess. To
keep the towel from collecting dust, I keep them in plastic Zip-Loc
bags. Pushing harder when cleaning *WILL* scratch the plastic laptop
screen. The accumulated dirt and dust in the cloth turn it into
sandpaper.
"How to Hand Wash Microfiber Towels"
<https://www.youtube.com/shorts/9GHJ_8sfg1M>
BTW, as a disinfectant 70% is better than 99%. Surprising, huh? The
explanation made sense, but I forget what it was.
For medicinal purposes, the approximately 30% water concentration is
needed to kill some types of viruses, bacteria and fungi.
--
Jeff Liebermann jeffl@cruzio.com
PO Box 272 http://www.LearnByDestroying.com
Ben Lomond CA 95005-0272 AE6KS 831-336-2558
| Date | Sujet | # | Auteur | |
| 4 Feb 26 |  Re: How to clean a Dell laptop screen? | 7 | Jeff Liebermann | |
| 5 Feb 26 |   Re: How to clean a Dell laptop screen? | 1 | Liz Tuddenham | |
| 9 Feb 26 |  Re: How to clean a Dell laptop screen? | 5 | Jeff Liebermann | |
| 10 Feb 26 |  Re: How to clean a Dell laptop screen? | 1 | wmartin | |
| 12 Feb 26 | Re: How to clean a Dell laptop screen? | 3 | Jeff Liebermann | |
| 13 Feb 26 | Re: How to clean a Dell laptop screen? | 1 | Chuck | |
| 20 Feb 26 | Re: How to clean a Dell laptop screen? | 1 | Jeff Liebermann |
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