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Sampling and testing of the gas content in ethylene oxide cylinders

2015-07-27View Original

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I need a bottle of ethylene oxide gas, with a nitrogen seal at a pressure of 7 bar. I’m wondering if there’s any way to take a sample in order to determine the concentration of ethylene oxide contained within it. The ethylene oxide I purchased is 99.9% pure, and I’m curious whether anyone knows of a feasible method for taking samples for testing How to take samples? Detection method?
Reply #22015-07-28
At a pressure of 7 bar, epoxy should still be in a liquid state (depending also on temperature). In our laboratory, we use a nitrogen atmosphere at a pressure of 10 bar; assuming that the solubility of nitrogen in epoxy is 0, based on the purity of the epoxy raw material.
Reply #32015-07-28
It’s obviously liquid. You still don’t understand what I mean; I want to know how to determine the purity of liquid ethylene oxide
Reply #42015-07-28
Pull the insert tube out a bit; there’s no difficulty in that either
Reply #52015-07-28
The risk is too high; we definitely won’t allow such operations here. Is this how you take samples?
Reply #62015-07-28
Insert bottom pipe, connect two valves in a cross shape
Reply #72015-07-29
The sounding tube is released, and then what?

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