I just made another O2 analyzer and am interested in making my own O2 samplers as shown in Oxy Hackers. I have the fittings and only need to know what material is used for the flow restriction. It only says "filter media" and doesn't specify what kind or where to get it. Is this just a stack of sintered metal filters from regulators, or can one get the sintered material in a thicker piece and cut it until you get the right flow? Thanks in advance for any input, Mike W. Oregon, USA -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
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