EPISODE · Jan 31, 2011 · 4 MIN
What does it mean when soaps claim to kill 99.99% of germs?
from Question of the Week, from the Naked Scientists · host Dr Chris Smith
Some hand washes claim to kill 99.99% of all germs. What do these advertising slogans really mean? Would two hand washes kill 100 per cent of all germs? Plus, we ask if sending an e-card is really more environmentally friendly than a paper one. Like this podcast? Please help us by supporting the Naked Scientists
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What does it mean when soaps claim to kill 99.99% of germs?
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