The Allergy particle filter twin pack contains 2 spare filters.
This filter is able to trap Particulate Matter less than one micron in size and more than capable of the removal of PM2.5 Particulate Matter typically found in most city environments.
It can be used with any Respro® mask (with the exception of the Metro Mask) provided that it is the same size filter as the mask size ie; large filter – large mask.
For Instruction on how to replace a filter in a mask, watch the video here
Medium filters can also be used in a small mask.
rob –
I am a severe hay fever sufferer. I have been using the particle filter with the allergy mask for a number of years now. I use the mask while travelling on my motorcycle and usually feel better when I am at the end of my journey than I was at the beginning. When the pollen levels get really high I wear the mask most of the time. It makes a very positive and easily discernible difference. I unreservedly recommend it to anyone suffering with pollen or pet allergy. I recommend it especially if you use a motorcycle or bicycle. Just keep the mask away from Velcro. In my opinion this filter should be subsidised by the NHS. Thanks Respro!