Dear AMMRL members,
Our site is about to receive and install a Bruker 300 AVANCE system
including a Level I Solids accessory upgrade. Our facility can supply
compressed air via oilless compressor and is already fitted with drying
towers. We do not have the ability to use nitrogen as instrument air.
According to the Site Planning Guide, for MAS probes we need to supply 8.0
cu.ft./min at 80-120 psig after drying. In addition for the MAS probe, we
need to remove particulates with 1 micron filters that retain 99.99% of
specified particles. I have only been able to locate one manufacturer
(Mykrolis, www.mykrolis.com) that can supply a filter that will operate at
the required pressures and flow rates. I contacted Millipore and they
directed me to Mykrolis. The product they recommended is a Wafergard Max
Bronze in-line Teflon gas filter, designed to be disposed of and replaced
when spent. However, this filter exceeds our requirements as greater than
99.9999999% retention of 0.003 micron particles. The filter costs $325 and
comes with a 1 year warranty. I'm a bit concerned about excessive plugging
and these filters are really designed for the semiconductor industry.
I'd like to know if any members out there with similar air flow
requirements or equipment are using this filter or other
brands/manufactures. Am I buying the right filter? Is there another type
of filter that will meet our requirements? Any advice, input is
appreciated.
Regards, Luis
Luis P. Barthel-Rosa, Ph.D.
Project Scientist
Battelle Dugway Operations
U.S. Army Dugway Proving Ground
P.O. Box 217 or Bldg. 4239
Dugway, UT 84022
435-831-5836 (phone)
435-831-5922 (fax)
barthell_at_dpg.army.mil
barthel-rosal_at_battelle.org
Received on Fri Aug 01 2003 - 07:31:56 MST