Hi guys,
I use a respirator when I airbrush...Keeps the lungs pink rather than a dull shade of olive drab or something...any way, I received them from my father in law who retired from the State Police force not long ago. I got them new, with new filters and have used them a handful of times over the past two years or so.
What is the frequency that I should be replacing the filters?
When using them, they still seem to work as I do not detect any noticeable fumes but I don't want to assume anything. I'm planning on getting some new filters any way, but I want to know if any of you have a rule of thumb or something determining how often you change your filters.
Thanks,