Thanks Robin,
I just realised that I already have one of those stashed away in the garage.... I'll dig it out.
John
> The floodlight is a yellow aluminium device with a glass cover and a
> steel frame for sitting on the ground. It is intended for building
> sites and the like. I took the glass cover off and used it for other
> purposes. This may slightly improve the UV output, but the main reason
> I did so was because I have mine shining downwards and I wanted to
> improve air flow around the lamp. I left the wire frame safety guard in
> place, so it is unlikely that I or anyone else is going to stick their
> fingers into it while it is turned on.
> - Robin http://www.firstpr.com.au/pcb-diy/