True Anti-Viral Filter in RD40

Description

The technology was developed over a 7 year period following the 2002/3 SARS outbreak, specifically to filter virus particles (virions) in the range 60nm to 180nm without the increase in work of breathing associated with conventional ultra-fine filtration.  Designed and engineering in Scotland, the technology then lay idle until the 2019 SARS-COV-2 pandemic, and is now being retooled for manufacture in the UK.

The RD40-AVM filter comprises four layers to provide FFP3 (N99) for PM2.5, with 99.995% efficiency for particulate and virions in the range 60nm to 180nm in a 38mm thick RD40 shell.  The filter layers comprise:

1. FFP3 certified filtration outer layer.
2. Nano-Ag coated FFP3 electrostatic pre-charge layer, which charges particulate to 30 million volts per meter by bringing them within a micron of a 30V +ve source, safe for handling and use. The 30V source is powered by an AAA cell and voltage generator within the filter.  Battery is user removable.
3. Insulating filter layer, large pores to avoid clogging
4. A 7mm thick Nano-Ag coated molecular sieve at -ve potential. The positively charged virions are attracted onto the surface of the negatively charged sieve, for them to be trapped in the molecular cages which are up to 230nm in diameter. A 3nm thick finely dispersed silver coating (Nano-Ag) on the sieve causes the virion to be destroyed after a period of contact.

Ordering Information

Patents pending.