Soaking Glass in Powdered Brewery Wash: PBW

[Zymurgist]

Bought a bubbler a few weeks back.
Even with changing the water after each bowl, it was still starting to get dirty inside.
Soaking in isopropyl rubbing alcohol and a bit of salt overnight worked ok, but it was not spotless.

I have a lot of Powdered Brewery Wash that I primarily use to clean my brew pot and fermenters used in homebrewing beer.

An overnight soak in 2 quarts of hot tap water and 1 tablespoon of PBW worked much better than the alcohol. Stir and dissolve PBW into hot water before submerging glass.

Anyone else tried PBW on their glass?

 

[PE636]

What's pbw consist of? Is it the pink powdered chlorine stuff? Acetone is the best I have found for cleaning glass.

 

[Zymurgist]

It is alkaline, chlorine is acidic. Powder is white.
It works so well in cleaning brewing and fermenting vessels because it breaks the bond between the organic material (malt, hops) and the inorganic surface (glass, stainles steel, plastic). My theory was that anything sticking to the glass pipe would also be an organic carbon based compound.

So I learned that PBW contains, as best as I can figure out, the following active ingredients:

• Sodium percarbonate (an oxidizer), plus
• Sodium carbonate aka washing soda (a buffering agent), plus
• Sodium metasilicate (a builder), plus
• An unknown sequestrant/chelating agent, such as VerseneTM aka EDTA, plus
• An unknown surfactant, such as sodium dodecylbenzenesulfonate (SDS).

 

[vapingfans]

what kind bubbler? can you share picture here... we maybe help on the iuess... here