How are you interfacing your capillaries at the moment? As a student I used to bond capillaries into glass chips using graphite/vesple ferrules and epoxy glue which made a reasonably leak resistant interface. It does take some practice to get a good connection though. Ciro Chiappini wrote: > Hi > > We are trying to develop a microfluidics flow chamber for biological > application. We require the smallest possible interfaces to the > microfluidics chip. We are trying with capillary tubes but that presents > several problems with leaking. We also saw microfluidics ports from > upchurch > but their outer diameter is too big (8mm) and doesn't allow us to do > microscopy. Does anyone know about small interfaces to the microfluidic > world?