Coronavirus / COVID-19

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When bringing back food from stores, the packaging must be disinfected because it's been handled by strangers who could be asymptomatic carriers. Here are the options:

Bleach at 1000ppm concentration is effective and cheap.
1000ppm = 0.1% concentration (to be safe, use 0.2% concentration)
Bleach is usually sold at about 4% concentration (check your bottle).
To get from 4% to 0.2% you dilute it 20x, e.g. 10ml of bleach becomes 200ml of sterilising mixture.

Into the final mixture, you can dip a gloved hand holding a rag, which you squeeze out and use to wipe all packaging. Leave items to sit damp for at least 5 minutes, then handle again with sterilised hands.

If you need help working the math out, use this % dilution calculator:
https://www.physiologyweb.com/calculato ... rcent.html

coronavirus-disinfection.png

You can also use peroxide or ethanol:

Some disinfectant agents effectively reduce coronavirus infectivity within 1 minute such 62%–71% ethanol, 0.5% hydrogen peroxide or 0.1% sodium hypochlorite.
Source: https://www.sciencedirect.com/science/a ... 8920300081

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Safer than bleach is soapy water, BTW. Soap dissolves the lipid layer surrounding coronavirus particles, destroying them. So use soapy water before using bleach. Bleach is toxic, soap is not.

Hang in there, people.