Did a first clean on a friends place today and noticed a spotting effect on the glass I haven’t seen before - it was not anything left behind from the water, bit actually a defect with the glass.
Itried rubbing over it with bronze wool and it didn’t come off at all. It seems like a maybe a defective protective layer that had gone bad over time - just wanted to know the science behind it so I can recognise it better and explain to customers in the future. Video of the problem attached :
View attachment 16761
Itried rubbing over it with bronze wool and it didn’t come off at all. It seems like a maybe a defective protective layer that had gone bad over time - just wanted to know the science behind it so I can recognise it better and explain to customers in the future. Video of the problem attached :
View attachment 16761