abstract |
Adsorption filter consists of air-tight carrier material charged with adsorbents parallel to carrier layer. The novelty is that the filter contains at least 250, pref. at least 300g absorbents per litre. The ratio pressure loss (Pa) (at 1 m/s) to butane capacity (at 76 ppm and 62 cm/s, 23 deg C and 35% rF) is less than 10. |