You can use hydrochloric acid <10% to remove cement and lime residue.
You can also use the hydrochloric acid solution as a drain unblocker in cases where an alkaline unblocker does not work.
Use/dosage
Dilute hydrochloric acid with water 1:10 to 1:20.
Finally rinse with water.
Beware of mixing with alkaline drain unblockers as this can result in a violent reaction.
This product is only intended for professional use.
|