Quote: (Originally Posted by
Dave1w)

From memory the 40% is about 10.5 litres a minute. It comes with an instruction to use a larger cylinder, 7 or 8 litres.
Regards
Dave
thanks for the info. although i'm a bit confused, i read in the drager ray manual that the scrubber would only last around 70-80 minutes, however, reading around in this forum some said that the scrubber should last around 2 hrs or so.. can anybody confirm this? or is the 2 hrs scrubber duration comes with an upgraded unit/accessories or something. thanks
