Some more information,
We recently ran a trial at a pub who have been using a traditional purple beer line cleaner, we asked the Pub to run there normal clean as they have done so for over 20 years including the full rinse, normally they would next pull beer through the line and serve as normal,
however we then asked him to run our line cleaner on there clean Lines to see what happened, to there amazement our line cleaner removed a large amount of sediment and to the publicans horror there was also some of the Purple line cleaner still stuck to this sediment (it turns green with our line cleaner)this showed that our plant based Line Cleaner was 1. more effective then the old Costic based cleaner, 2. as the old cleaner was not soluble in water there was still residue in the line, As our cleaner is fully soluble in water this is impossible,
Frank