One last recommendation:
If you are really stuck & I am hesitant to recommend this for electronics as often people go crazy on the dosage thinking more is better (although I have seen devices like this installed in refrigerators, walk-in cool rooms, freezers, and laboratory equipment for years). The national library here in Australia employs this technology to preserve old manuscripts. Lastly, the concentration from such a small amount is also safe if inhaled.
What is it?
Hydrogen Peroxide Vapour.
How does it work?
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Place the item in a box with a good lid.
plastic is great if you have it
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Place a small polypropylene washcloth over a small plate or plastic dish.
In Australia we have a product called a Chux cloth
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Add a teaspoon of 50% Hydrogen peroxide (or a tablespoon of 10-12%) to the chux cloth. leave the box at room temperature ~25 degC.
The chux cloth increases the surface area of the Hydrogen Peroxide so it will evaporate quickly
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Wait overnight, open the box the next day to check. Close if required.
The hydrogen Peroxide evaporates then precipitates onto the outside surface of the box and any items inside. If the box is opened 12 hours later little of the Hydrogen peroxide escapes as long as it is closed quickly before the Hydrogen Peroxide re-evaporates
Essentially Hydrogen Peroxide (H2O2) compared to Ozone (O3) which is very corrosive we need extreme magnification to see any corrosion from HPV. The total mass used is low and the contact concentration is never over 1 molecule thick. To physical objects with a high density, this does nothing but too complex organic compounds such as odors or bacteria it is lethal. This method is very effective on clean objects free of debris and loose organic material.
Take it or leave it, I just distilled millions of dollars, thousands of hours of research & patents into a disposable forum post. But don’t go thinking I am smart or anything, I am as dumb as a box of nails.
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