I currently use two filter/water separators (glass bowl type) and follow 
with a 100cc silica gel dessicant trap on my compressed air line.  The 
silica gel changes color in the course of about 3 days.

Can anyone recommend an air dryer to pretreat the compressed air supplied 
to an IRMS system?  

thanks,

Ben

Benjamin Harlow
Washington State University 
School of Biological Sciences
P.O. Box 644236
Pullman, WA  99164-4236
 
Office:  509-335-6161
Lab:     509-335-6154
Fax:     509-335-3184
 
Laboratory for Biotechnology and Bioanalysis Stable Isotope Core
http://www.isotopes.wsu.edu