If you dont mind a bit of DIY, you can always make one with stainless tubing and swagelock fittings in a ice/glycerine bath.
Whats your budget? There are a few lab grade appliances that would work well but those typically are found in the $1-3k range.
http://www.hyvac.com/Products/Filt_Traps/Dry%20Ice/Dry%20Ice%20Trap.htm
Something like this can be easily bought or fabricated. frabrication also allows you to tailor the device for your specific needs (size, volume, flow rate, QD etc)
PM me if you would like to talk!