Germs, Rabbits and Chess Remember, live microbes reproduce quickly — much faster than rabbits — many having a doubling time of just 20 minutes or less, or 3x or more per hour. In hours, bacterial growth is exponential.
Think of it this way: If you placed one pathogenic microbe on the first square of a chessboard, 2 microbes on the second square, four on the third, and so on, then after 63 reproductions there are 64 squares on a chessboard or doublings you would have 18,,,,,, germs — a horrific, potential Infectious Dose to be sure.
Note — bacterial cells reproduce asexually by binary fission. Zero Tolerance for Germs So practicing Zero Tolerance for pathogens is better than just reducing them by According to Dr.
Charles P. The second reason why products say they only kill Now, suing a company over. If slightly changing some text on a label can prevent a company from losing a lawsuit, they're certainly going to do it. The third reason is one of physical reach.
Look at your hands. You can see tiny textures to your skin, right? Little micro-wrinkles, pores where hair grows, the deep grooves around and under your nails. To you, these are tiny. To a germ, they're larger than the grand canyon. Bacteria, viruses, and other microorganisms can hide deep in these cracks, where an application of hand sanitizer might not be thorough enough to get them. Part of the CDC's hand-washing guide which is a process you can follow when applying hand sanitizer as well, to be thorough with its application , is making sure you give soap or hand sanitizer plenty of time to work its way deep into these cracks.
The fourth reason actually has something to do with what It's not actually a flat percentage; it's measuring something called the D-value, or the " decimal reduction time " for the cleaner. It's based on a logarithmic scale, which is some complicated math you don't really need to know to understand the system. There will always be some leftover germs, whether it's hidden in deep crevasses beneath your nails or in wrinkles in the skin, or it's just microorganisms that aren't killed by alcohol.
Other than the legal liability, all of those reasons indicate that hand sanitizer simply can't kill every germ on your hands. So, is that okay? Is that fine, or is it something you should worry about? The fact is, it's fine in almost every case. Hand sanitizer is broadly used in hospital settings for a reason, and that reason is that it's generally sufficient to prevent the spread of most diseases between patients and healthcare workers.
The hand sanitizer you get for carrying around on your daily errands might not be the same kind of hand sanitizer a hospital is using, of course. Theirs tend to have foaming agents and soaps as well as alcohol.
There is no substitute for washing hands for a minimum of 20 seconds with soap and warm water. Hand sanitizer may help reduce the number of microbes on your hands, but only in ideal conditions when used as directed on the package. Michigan State University Extension recommends only using sanitizer after regular hand washing, or if there are no safe hand washing accommodations available.
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If the results show 0 organisms present, the test standard requires you to assume there is at least one organism present. When you multiply it up by the dilution factor, you can only be sure there is less than 10 organisms present, which results in a claim of If you do, we could report it to trading standards or the HSE.
To give you an idea, a Depending on the organism you are testing the standards vary, which is why you see a variation from Antibacterial wipes, sanitiser wipes, alcohol wipes, disinfectant wipes… they all work towards the same goal of killing
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