Sodium Hydroxide residue

[bindi]

I have some glass bottles that contained NaOH 1M. Im having trouble cleaning them.

I do remember seeing this on a post before but cant seem to find it.

[sunray18]

I use acid to clean them... it will work as long as the glass isnt etched..

[bindi]

I was hoping for a alternative to acid.

I remember reading it and thinking what a good idea.
(not nappysan).
But I could just be a little crazy Bring on the long weekend!

[dime]

Maybe NAPISAN

[RosalieM]

I have used lemonade. Just need to make sure you rinse it really well after. The cheap homebrand (about 80c for 1.25L) is all you need don't worry about the expensive stuff! Doesn't work so well after it goes flat (still works a bit, just not as good as fresh) so I think it's a combination of the ingredients and the bubbles, although I haven't tried plain soda water... maybe that would work too, and without the stickyness! Maybe I should try it out sometime... I discovered the lemonade by accident (like all good scientists!!) when I poured it into a dropper bottle for a prac and it just started bubbling madly and cleaned it!! It had been cleaned by other methods and I'd given up on the glass ever becoming clear again...

[Ocker]

If the lemonade works, must be worth a try in sodium bi-carbonate

[rae]

Hasn't lemonade got citric acid in it??

What about oxalic acid it seems to fix lots of things!!