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Review on πŸ”¬ Copper Filter Inserts: Revolutionizing Self-Disinfection with Kuhn Technology by Mark Deuschle

Revainrating 5 out of 5

Too expensive for masks and respirators

The filter is too small in area for this price. It corrodes easily and is somewhat immobile for a drop-in filter, although it appears to be anti-allergic and the air that passes through it seems fresher to breathe. Maybe 5 stars if not for the price.

Pros
  • High breathability, water resistance and no heat generation
Cons
  • You could have chosen a newer model