Proportional Counter?

[Jack Couch <jgcouc@planetx.bloomu.edu>]

Radsafers, 
We are looking for an additional proportional 
counter system for our health physics teaching lab. 
Does anyone know who markets such devices these 
days? Ideally, it would be a 2-pi, gas-flow, 
single-sample, alpha-beta counter. Above all, it 
must be affordable. 

We would of course be amenable to receiving 
a donated system in good working condition 
if anyone has a spare.

Thanks for any help and information you can 
provide. Please respond privately.

Jack