Photomultiplier Tube Module Etc

Hello,

I have a photomultiplier tube module, a calibrated light source and signal
conditioner all test, on eBay starting at $99. This is probably about $1000
worth of parts. Ideal for low level light detection.

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category&230&item%62457693