View Full Version : Passivating a 2 bbl system

10-26-2017, 12:34 PM
I've been reading a lot about passivation, and speaking with other brewers in my area, and there's definitely a lot of info out there on the subject.

Looking to passivate our 2 bbl tanks, preferably through CIP, and what the best option is.

A supplier in our area recommended nitric acid, but admits that it's only available in very large quantities, far more than we would need. I'm trying to see if another brewer in our area will sell us some, but no luck so far.

I know Starsan is technically an option, but it sounds like running it through CIP could be a problem due to all the foaming.

Does anyone with a similar-size system have any recommendations?

10-26-2017, 01:47 PM
Find a supplier, ask for a sample. They will usually send you a gallon or five at no cost.

10-26-2017, 06:09 PM
Country and BSG both sell boxes of 4 gallons. Get a case of Acid 5. You're going to need to repassivate quarterly anyway.

10-29-2017, 09:40 PM
I would agree with the above comments. You will need to re-passivate in the future anyways, so having some nitric/phosphoric blend on hand is a good idea. I like Birko Corp chems, and have a passivation procedure from them I can email you if you PM me.

An alternative that is tried and true would be citric acid passivation. It is likely cheaper, but not necessarily better. Some would argue it is not as long lasting as a nitric passivation.