Fill a sink with cold water, agitate it to remove the clockwise motion imparted to it, by the tap being on the right hand side.
Leave for about 1 hour, so the water becomes still, gently lift the plug.
The water will drain straight down with no clockwise or anti clockwise movement.
Leave for about 1 hour, so the water becomes still, gently lift the plug.
The water will drain straight down with no clockwise or anti clockwise movement.