The Weary Wizard wrote:
On Jan 21, 8:57 pm, Lino expert wrote:

Harpic 100% Limescale Remover - does what it says on the bottle. Works
a treat.

Sadly I used that - it hardly knocked a dent in it I'm afraid!

As for the other acid-based products mentioned in this thread, are
they things readily available in B & Q etc.?

Builders mercahnts for brick acid, or a good hardware shop.

Don't expect it all to go instantly.It takes time to dissolve decades of
urine, limescale and ****.

Someone mentioned phosphoric acid. I think thats 'jenolite' rust
remover. Brick acid is about 30% hydrochloric. Most descalers are
sulphamic, but any acid will ultimately crap all over carbonates, apart
from carbonic acid!

Other acids you can get are formic - I think Kilroc uses that..and
sulphuric. That's generally for specialised sanitary cleaning type
operations. Or car batteries of course.

Even vinegar (acetic acid) or rhubarb juice (oxalic acid) will do a bit
to scale.


The one poster who mentioned blocking the loo and filling it up with
acid had a good idea if its rim based stuff.