Has anyone used one of these ?
look a lot cheaper ( £30 ) than the face mask and no batteries :lol:
filters down to .3microns
may give one a try
http://i17.ebayimg.com/05/i/07/e5/b2/e1_1.JPG
look a lot cheaper ( £30 ) than the face mask and no batteries :lol:
filters down to .3microns
may give one a try
http://i17.ebayimg.com/05/i/07/e5/b2/e1_1.JPG