Allan
There are now a variety of better ( safer, although maybe not so flexible) units available. As far as I can see they all require an approximately £10 single use disposable, a considerable increased revenue cost. The Micrel Medical drivers look to have some better safety features but similarly require a locking box and prohibition of pump operation without a Lure Locking Anti-Siphon extension line and the introduction of a laminated ready-reckon table. What I'm suggesting is the reduce risk could extend the operational life of our current units (many thousands in the UK) until safer pumps ( hopefully with a £2ish disposable) can be phased into use.
Bill
