this post was submitted on 24 Mar 2024
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Homebrewing - Beer, Mead, Wine, Cider

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Sorry for the newbie question. I'm just trying to figure out if there's some sort of catch here. I don't think the StellarSan stuff is diluted, so I've been trying to figure out how it's so much cheaper than starsan.

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[–] thantik 29 points 7 months ago* (last edited 7 months ago) (3 children)

They're both 50% phosphoric acid. It's the same shit. Start learning to figure out the chemical of what you're buying, and just buy the chemical directly. The StellarSan stuff is probably right on price point for phosphoric acid.

[–] [email protected] 11 points 7 months ago (2 children)

Understood. My first thought was actually to check whether the stellarsan stuff used some weird chemical, but the Amazon listing didn't specify what the starsan uses, so I'd assumed it was some secret recipe or something. Thanks

[–] thantik 19 points 7 months ago* (last edited 7 months ago) (1 children)

Look at the images online. The packages on both say that they're 50% phosphoric acid. The "Starsan" has another acid at 15%, but it's not likely a differentiator in their performance.

Another thing you can do if you want to know the chemical makeup of something - Ask the MFG for an "MSDS" (Material Safety Datasheet) - it'll generally tell you what it's made up of.

[–] [email protected] 7 points 7 months ago

Oh right, thanks again!