4 ms·
It's my understanding that its also necessary to dilute to slow down the evaporation rate. At above 90%, it simply evaporates too quickly to have effect.
by McKayDavis 7y ago
It's my understanding that its also necessary to dilute to slow down the evaporation rate. At above 90%, it simply evaporates too quickly to have effect.
- tptacek 7y agoDoesn't it also denature proteins very quickly at 99%? (I ask because I worked a polling precinct on Tuesday and 99% isopropyl was how I disinfected the smartcards that unlocked the BMDs for voters and then got passed back to us; it definitely did not evaporate instantly on those cards). I'd be interested in knowing whether anyone with expertise on this subject has thoughts on it. The boy is a biochem junior (and in my living room, because of coronavirus) and he doesn't have a firm answer on whether it would or wouldn't work.
- tptacek 7y agoI got word back from a infection disease pathobiologist (through her husband, a friend): 70% for surfaces, because it takes longer to evaporate, 99% for instruments.
- pvg 7y agoDoes that mean the thing about the water needed is just wrong (chemically, I mean, not as practice)?
- tptacek 7y agoI understand it to matter a great deal when you're trying to get rid of bacteria, but it is a little tricky to square with the "we use 70% for surfaces and 99% for instruments" thing I got from the professional.