Davek0974
****!, Drink!, Girls!
- Messages
- 918
- Location
- Hertfordshire
Hmm, i was looking at this one... http://www.ebay.co.uk/itm/251803340467?_trksid=p2055119.m1438.l2649&ssPageName=STRK:MEBIDX:IT
Ohh that got me to this: https://en.wikipedia.org/wiki/Phosphate_conversion_coating
And using that got me on ebay to Ferrozinc, one of the sort of water based sprays that changes colour. Wonder if that is it?
Adrian
Not a dip though.