GorillaZilla

The source of the gas is from a pressure swing absorption oxygen concentrator pulling from the surrounding atmosphere... So shouldn't have anything combustible comming from it. How would you go about confirming that the gas held over water is a high concentration of oxygen? Using a splint would be difficult for obvious reasons.

I'll try the splint, if i put the end of the pipe at the bottom of a tall beaker, I take it the beaker will fill up with oxygen due to it's higher density aye? the output on the pipe is not much, maybe half a litre per minute, will the oxygen diffuse into the air faster than I can fill the beaker at that rate? Also how do I go about testing oxygen with a zinc air battery? Does the voltage change depending on the oxygen concentration?

Hello chaps Say I have a pipe that outputs gas, that I can capture in a sandwich bag.... Is there any way to determine if there is a high concentration of oxygen in the captured atmosphere? Even better, is there any way I can tell if it is really high concentration of oxygen? 80% or more? All using easily attainable equipment or chemicals, is there anything like a test strip I could put inside the bag to show the concentration of oxygen?