Quick Answer: Why Is The Percentage Of 99.9 Germs?

Why does Purell only kill 99.9 of germs?

So why do hand sanitizers and other cleansers say they only kill 99.9% of germs and bacteria.

There are a few different reasons for this.

The first reason is simply that cleansers can’t kill everything.

Therefore, a sanitizer cannot make the claim that it kills 100% of germs on a surface because it can’t..

Does Purell really kill 99.9 of germs?

Hand sanitizers are marketed as able to kill 99.9 percent of germs on your hands. … Alcohol-based hand sanitizers are very effective at killing most germs, including most bacteria and viruses.

Which soap brand kills the most bacteria?

Antibacterial soap had an average of thirty-four bacteria colonies, whereas hand sanitizer had an average of fifty-five bacteria colonies. Therefore, antibacterial soap clearly killed the most germs.

Is it safe to eat with sanitized hands?

Drinking even a small amount of hand sanitizer can cause alcohol poisoning in children. (However, there is no need to be concerned if your children eat with or lick their hands after using hand sanitizer.)

Does water kill 99.9 percent of germs?

One study demonstrated that handwashing with soap and water removes the presence of bacteria to only 8%. … In a scenario where a soap really removes 99.9% of germs, the remaining 0.1% may sound insignificant.

What is the .1 percent of germs?

There isn’t a one percent of germs that they can’t kill but when they test it, they have to see how many organisms they kill against other organisms. They test it to certain tolerances and the law for cleaning products says they have to meet a three log reduction. That is 99.9%.

Does 70 alcohol kill 99.99 of germs?

When you spray rubbing alcohol on a hard surface it will kill the bacteria on the surface. … 70% alcohol is recommended to kill bacteria and to use as a disinfectant.

What doesnt bleach kill?

Contrary to popular belief, bleach does not kill all bacteria. Different types and concentrations of bleach may have different effectiveness ratings against certain forms of bacteria – and the methods used to treat one type of pathogen may render the chemical ineffective in treating another.

What does 99.9 mean?

Percentage calculationAvailability %Downtime per yearDowntime per day99.9% (“three nines”)8.77 hours1.44 minutes99.95% (“three and a half nines”)4.38 hours43.20 seconds99.99% (“four nines”)52.60 minutes8.64 seconds99.995% (“four and a half nines”)26.30 minutes4.32 seconds12 more rows