Blanco silgranit Sink Discoloured

[Anthony B]

Worth a shot wondering if anyone has managed to rescue a blanco silgranit Sink it was anthracite in colour but the middle part has become discoloured.

I've been reading online how there supposed to be stain, heat scratch resistant etc I've no idea what's caused the problem ended up with it for nothing so thought I'd give it a try and clean it up.

Currently tried cif, washing up liquid etc nothing shifting it

 

[oldbuffer]

Looks like limescale. Try Kilrock, on a fairly unseen part at first.

 

[VickyBH]

I remember reading a post someone had a discolour problem on a blanco Silgranit too. It turned out they were being too careful and not cleaning the sink enough. Limescale built up on the surface which soaked up colour of food. Usually vinegar or citrus acid should clear limescale but check the care instruction first what NOT to be used for cleaning the surface.

Please let us know how you resolve the problem as I'm interested in Silgranit sink too.