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    99% vs 99.9999% Why are Percentages so Important When it Comes to Cleaning?

    Date Posted:
    Bio-Misting School

    The difference may seem tiny to the human eye, but when we’re talking about percentages and bacteria, we are talking billions.

    What really is the difference between 99% and 99.9999%?

    We are all used to seeing percentages being used in all walks of life, checking calories on food packaging, to how likely it is to rain this weekend.

    Percentages help to make aspects of everyday life easier.

    But what do those additional decimal places truly mean when it comes to killing bacteria, viruses, and spores?

    While it is unknown to most people, we are surrounded by micro-organisms. Bacteria, has lasted on the planet two thousand times longer than the human race. More bacteria live inside our mouths than the total number of people who have ever lived!

    A single sneeze or cough can carry millions of bacteria or viruses onto hands, surfaces or into the air, at a speed of hundreds of miles an hour.

    But when referring to the prevention of these viruses, what exactly do we mean?

    When growth conditions are good (body temperature, nutrients and moisture), most bacteria can double every 20 minutes. Therefore, in less than just eight hours one cell can potentially multiply to over 10 million.

    A recent report published by Dr Pierre Grascha PhD, Chief Scientist, Deb Group Ltd. Showcased how the extra ‘.9’ means that risks of transmission are reduced by an additional ten times.


    10 times more efficacious than a misting product that is only 99.99% effective

    100 times more efficacious than a misting product that is only 99.9% effective

    1,000 times more efficacious than a misting product that is only 99% effective

    10,0000 times more efficacious than a product that is only 90% effective

    So that extra ‘9’ makes a HUGE difference

    Here at A&R we use Steri-7 chemical cleaning range, once sprayed onto surfaces it kills 99.9999% of all bacteria, viruses, and spores.

    Making transmission exceedingly unlikely, if not altogether impossible.

    Once the formula has dried and created a Reactive Barrier, it remains reactive to any form of moisture for 7 days after application.

    Unlike other bio-misting products, you can return to a bio-misted room 30 minutes after the mist has been applied. Where others in the industry have to be left for over 24 hours.

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