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I use Sperasorb and I feel it contains a lot less dust.
Thks Dutchy. Indeed it seems to be a better solution than using a (state-of-art

) filter.
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We have loads of Sofnolime 797 for sale in Coppet, ditch the Drager sorb and come and buy some of the good stuff..
Good idea, Dave !
Best regards,
Eric