DIY Carbonated Water Rig: Is All CO2 Created Equal?

Post date: 2021-01-14 11:34:23

I hate Sodastream for various reasons, but I love fizzy water for all the regular reasons, so I'm thinking of making my own home carbonation rig. If I get a tank of CO2 from a welder's supply store or any other industrial source, will it be safe for consumption?

I'm looking into some kind of setup like the example at this link.

I assume the Popular Science website wouldn't just tell someone to go buy a bunch of poison CO2, I mean hell, their masthead lists an actual lawyer who would presumably tell them not to. But various other DIY pages caution that industrial CO2 "might" be toxic and you should just ask whether it's safe for human consumption. I assume an atom is an atom is an atom, but maybe the tank could be toxic or something?

Anyone have thoughts/knowledge on this?

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