| Q. How often does the filter need changing? A. The effective working life of Respro® filters depends on a number of factors, such as; the breathing rate of the user; ambient levels of pollution; the length of time the filter is actively working; hygiene levels. Taking these factors into account we recommend that the filter should be replaced every month or every 69 hours, whichever is sooner.
Replacement of the Sportsta⢠filter should be carried out every month or when the filter becomes noticeably discoloured.
Q. Are all the filters and valves interchangeable? A. Yes! All our filters are interchangeable, provided they are the same size. You can make your own mask from a combination of parts. like the Sportsta⢠mask with Techno⢠or City⢠or Cinqro⢠filter or Allergy mask with Powa⢠Elite valves. | 
