Hi Kit,
i do agree with you , but unfortunaly,we are not in UK.
is it better to grab from a dusty hospital warehouse an halothane vaporizer , not knowing how long it has spent there , and with no clues about the last maintenance , and use it with a false feeling of being safe because it was sold 20 years ago for halothane use ? or is it better to to use new vaporizer and convert it to halothane , double checking the possibility to do it and verifing the output with a gas analyser ?
well , i was especting old stories from Geoff describing an unusual issue with this type of conversion

thanks for your input , i keep it in mind

best regards
Ps :
http://www.ncbi.nlm.nih.gov/pubmed/6870010http://www.medscape.com/viewarticle/429544_2