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Where to buy a new Humidifier?

You can buy them online from dozens of sources, including Amazon and eBay

One thing to watch for is the pressure rating of the pressure relief valve.  Most are high enough (3 psi or greater) but we accidentally bought some (grey lid) that had about 0.5 psi and that didn’t allow enough pressure to push the gas through the Drinking Water Bubbler.

We get our 3 psi Humidifiers from:
https://www.directhomemedical.com/7100-3-psi-bubble-humidifier-oxygen-bottle-salter.html

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