While I know nothing of the mechanics, I can tell you that putting hardener of one brand into the tank of resin of another brand by mistake and then pumping it through the dispensing pump mechanism is really really silly. NO, it wasn't me that made this mistake either.

Lisa

: I am doing a Graphic Products Product Investigation on the pump dispenser for
: my GCSE coursework. I was wandering if you had any information on the
: history of the pump dispenser or on the mechanisms. Any information woud
: be greatly appreciated.

: C. Cairine Cranfield - Thompson