White crust in kegs? Limestone?

[papamike]

Hi, someone gave me some used kegs. I used Oxiclean, TSP for cleaning. Everything is clean but there is a thin little white crust (looks like calcium or limestone). Even if I rub it, it doesn't go away. Someone know what it is and how to remove it? I'd like to use these kegs.

Thanks.

 

[BlackZX3]

I believe what you are talking about is beer stone. I am not sure of the best method to clean it.

 

[papamike]

Si, someone knows how to remove this?

 

[Jhenjum]

An acid rinse will remove that. Use a dilute vinegar solution or star san and it should come off.

 

[Poobah58]

PBW will get rid of anything...

 

[papamike]

I tried vinegar, no results.

 

[EonBlue66]

The vinegar is the best option,just let it sit overnight.

 

[Clayton]

CLR its is amasing stuff when you are dealing with non organic stuff like lime and rust

 

[fartingdog]

If it's white, it is most likely caustic residue that has built up on beerstone. Are these sankey or corney? If corney, you could get in there w/ some BKF and a scrubby. If sankey, here's what I had to go through

https://www.homebrewtalk.com/f11/best-way-remove-beerstone-caustic-residue-sankey-129319/

 

[papamike]

Excuse this stupid question, but still noob with kegs, is corny pepsi style and sankey coke style? If yes, I have both (pepsi and coke) but the one with the crust is a coke. If not, can someone explain me the difference?
Thanks

 

[Lil' Sparky]

Sankey is a regular 1/2 bbl beer keg.

 

[papamike]

Ok thanks. Can I use metal scrubby or it will create scratches for infections and particles?

 

[GilaMinumBeer]

It's likely Calcium Oxalate or BeerStone.

Try a thick paste of Bar Keepers friend and let it set for a while.

I wouldn't suggest using a metal scrubby as it could cause rust.

 

[fartingdog]

Ok thanks. Can I use metal scrubby or it will create scratches for infections and particles?

As mentioned, not metal- a green scrubbie and BKF (& elbow grease) works wonders.

To answer a previous question, coke kegs are pin-lock and pepsi are ball-lock, both are cornelius keg bodies.