But… why isn’t 99.9% enough to protect me?
Do you know how many pathogens are left by a 99.9% effective disinfectant?
When you do the math on pathogens considering 5 million on a small surface area, that 0.1% difference equals an extra 5,000 infectious pathogens! That’s a LOT!
Disinfectants are rated by a Log Reduction test and the Log number equates to the number of nines in the percentage.
Log 3 sample99.9% reduction
- Normally only used for bacteria
Log 3 sample
Log 4 sample
Log 5 sample
Log 6 sample
Log 7 sample
Starting with a sample size of 5,000,000 COVID 19 viruses, a Log 3 reduction leaves effectively 5,000 viruses left.
Log 4 sample99.99% reduction
- Common in commercial cleaners
- Must be included in the ARTG
Starting with a sample size of 5,000,000 COVID 19 viruses, a Log 4 reduction leaves effectively 500 viruses left.
Log 5 sample99.999% reduction
- Must be included in the ARTG
Starting with a sample size of 5,000,000 COVID 19 viruses, a Log 5 reduction leaves effectively 50 viruses left.
Log 6 sample99.9999% reduction
- Less Common in Disinfectants
- Must be included in the ARTG
Starting with a sample size of 5,000,000 COVID 19 viruses, a Log 6 reduction leaves effectively 5 viruses left.
Log 7 sample99.99999% reduction
- Must be included in the ARTG
Starting with a sample size of 5,000,000 COVID 19 viruses a Log 7 reduction leaves effectively 0 viruses left.
