SUNDSTROM RespiratorsThese innovative ?mask and full face mask cartridge respirators lead the market in comfort, design and affordability. Due to its unique design features, the Sundstrom ?mask comes in only two sizes, has one strap and provides 50% lower breathing resistance. The Sundstrom Particle Filter cartridge snaps on to any of the Sundstrom Chemical cartridges eliminating the need to stock single and stacked cartridges, reducing inventory and also allowing the user to fully deplete a cartridge prior to disposal. A thin membrane pre-filter also snaps onto the Particle Filter to remove the larger particulate thus further extending the life of the cartridge.SARS update....Face masks were the item most argued about during the SARS crisis. The Australian Medical Association issued a statement earlier this year, to the effect of "the general face mask used by most people, easily saturated, as you breathe in, and out, of it, and hence it was virtually useless after twenty minutes, as the virus could potentially pass through the moist face mask" For confirmed SARS patient treatment the SUNDSTROM SR200 is arguably the best and most comfortable "SARS prevention mask" available on the market. Use the SR200 full face mask with a particle filter and pre-filter. Change the low cost pre-filter as regularly as you would a normal face mask. The user breathes in through a pre and particle filter and out through exhalation valves, preventing the saturation concerns of the intake filter. A biological warfare filter is also available for the SR200 full face mask.You can find further details or alternatively send your enquiry today by contacting our website.Brian Malley or Yuk Mei Leung