Residue on PET yeast bottle

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Residue on PET yeast bottle

Post by Jaydee » Sat Sep 12, 2020 3:08 pm

Hi all,

I’d cleaned up after my last brew day using PBW and then Starsan to sterilise. I’ve now found that I obviously neglected to rinse thoroughly and I’m left with a hazy residue inside my PET fermenter and my yeast harvesting bottle.

I’ve tried PBW again and a 12 hour soak in Starsan but still have the problem.

I am in a hard water area, alkalinity of 220 ‘ish. Could this just be calcium deposits and nothing to worry about?

I would like sparkling equipment - any thoughts?


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