- Messages
- 1,763
- Location
- Scotland
I'm sorry but I was taught 0ppm and I've stuck with that. Like I said, when I did use 10ppm I got a complaint, so can't risk using anything else.Without any doubt 000ppm is what we all want to work with. However the levels you guys are talking about 6ppm etc as long as you are using good technique and rinsing well really should be fine.