I seem to have the same problem as many in the previous page, etc...
First I got some strange marks, they are round, running along the sides of two of my pieces.
I'm guessing from soaking with cleaning agents in cold water (or that went cold) because I'm very OCD with glass.
Used everything from Crystal Clear to GO, ISO 100% (gently) with a little salt (different grinds) and without, boiling water, you name it..! Seems the more I use a piece the harder it becomes to clean.
Then I tried PBW but it left those white streaks
, both inside and outside every piece I cleaned it with. Although partly it is my fault for letting it go cold, when I was working on the other piece and vice-versa.
It seems to happen when it dries up, even if rinsing thoroughly?
Well, I don't know if I'm reading too much into this, and hopefully somebody with more common sense (and probably a degree in Chemistry as well!
) will hopefully deter me in time...
So I read brewers also use a 5-10% acid solution for rinsing after the pbw wash, apparently?
Caustic Soda (Sodium Hydroxide) is supposed to remove any organic residue leftover if I'm not mistaken.
I took a look at other stuff they had in the shop and bought (yes, I did communicate with two reps before ordering) the said Acid solution and Caustic Soda (Sodium Hydroxide) along with the PBW just in case...
Added adequate protection: corrosive-resistant gloves, glasses, suit, aperon, gas mask, 2-3 layers of clothing, long sleeves... Operating in the balcony to avoid toxic fumes inside...
Will be trying the "nuclear solution" later on this week.