Dne 1.9.2012 12:31, Milos Sula napsal(a): > Hi, > i would like to ask you if brass or stainless steel fitting ( leaching > any toxic substances when medium is pumped through them ) could > affect growth of plants in vitro ( bioreactor ) wow, to už jsme světoví? Něponimáju :) S pozdravem Kosťa