Back up gas source

[DJ]

Hi- this isn't an GC question, but I was hoping some of the members would have insight since a similar approach could be used in gc.

I have a cylinder of N2 connected to a peptide synthesizer. The gas in a peptide synthesizer powers everything from needle depression to cart advancing, to solvent delivery. It is absolutely crucial that constant positive N2 pressure (65 psi) is maintained throughout the synthesis.

I'm trying to avoid the problem of running out of gas during synthesis, and would like to look into setting up a simple, cheap back-up system, perhaps one where two N2 tanks feed gas (through a 3-way splitter that connects to the synthesizer inlet. Is this practical? Is there an easier way ?

[chromatographer1]

Simple convenient backup cylinder switching devices are available from the major gas supply companies for a rather reasonable cost.

Simply check their web sites or make a call to a local distributor.

While a welding gas supplier might not carry such devices they are common in the market.

Your need has been met by business interests and I won't favor one by naming them on this forum since it would be best you find a vendor in your local area.

best wishes,

Rod