OK, I know, this is off-topic, and I will be lucky if my post survives
the wrath of the list moderators. But still, since I know that there
are some really smart heads around here, I decided to ask, maybe
someone would know:

I am trying to achieve low flow rates of some (mostly inert) gases.
Our flow controllers can achieve the lowest flow of 5 ml/min, which is
too much for my purpose. We have a bunch of peristatic pumps, that can
achieve down to a few microliter/min, but they are used, as far as I
know, with liquids only, because of the compressibility of gases. My
question is, if I forego precision of flow rate control, could I use a
peristatic pump to pump a gas? Are there any thermodynamic obstacles,
and with which gases?

Many friendly thanks in advance

m