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pressure balance sampling is actually was developed in the late 60s it was a revolutionary technique in order to transfer volatile materials it was designed for blood alcohol specifically and was able to transfer that in a highly precise manner to a gas chromatograph pressure balance sampling works very simply what we do is we have a vial and in that vial we put a neater and pressurize it to approximately the head pressure of the column we then close the valves and it actually sends an aliquot over to the column and then when we turn that off it sends a very pressurized slug of our analyte right onto our column given an outstanding performance the pressure balance sampling Works in a variety of different application areas virtually most of them are all well suited to headspace analysis so could be looking at volatile materials and drugs looking at the off layers in beer and wine looking at food packaging of course we want our food to be safe and we want to make sure that this p
