How do I know Pilkington Activ™ has been supplied?
The glass may carry a label on one of the surfaces stating that there is a Pilkington Activ™ coating and specialists may carry a Pilkington Activ™ coating detector. A simple test is to spray water at the surface and compare it with ordinary glass, see it sheet off the glass rather than form lots of rivulets. Silicone contaminated surfaces will also form rivulets similar to non Pilkington Activ™ glass.