Dear cupid04,
I could not agree with you more. As a chemist, when the answer was accepted I thought "No, no, no", the spelling is definitely "pipette". To the best of my knowledge this is the only spelling in our English Language although it was almost certainly derived from the French. But others seemed to have found "pipet" as a real word. Our pointless friend Richard ought to state the Dictionar(ies) referred to. I am shooting from the lip without any net searching. Mind you it's a great show and should be on later, but I suppose BBC think we all prefer rubbish after 7.00p.m. Pity. It's a reflection on average Brit or more likely BBC/ITV etc.'s bad judgement - note that they still assume we all go out on Saturday night as judged by rubbish served up!