Sciex Capillary pump

Listing description

Microfluidic pump and valve system for capillary fluidic pumping systems such as capillary electrophoresis, capillary GC MS, MS/MS, etc.
RS-232 interface.
Their promotional materials say "The Confluent™ NFM (Nano Fluidic Module) delivers isocratic solvents at extremely low flow rates. This modular unit facilitates nanoscale applications, including: mass spectrometric sample injection, trap column regeneration, lab-on-a-chip infusion, mass spectrometric mass calibration and nano-LC."
This product was introduced at Pittcon 2004.
Open to offers.
I have two of the units (as the pic suggests).

"Accuracy Flow Accuracy is .5%-2% of measured value
Pressure Capabilities Max working pressure is 5,000psi (335 bar)
Flow Rate From 20nL-50µL controlled closed loop flow sensor feedback - higher flow rates
Plumbing Accepts 360µm OD capillary tubing
Power Requirements Voltage: 90-240 VAC, 50-60 Hz, single phase
Current rating: 1A
Weight 10 lbs.
Overall Dimensions 4? Wide x 8? Long x 10? High
Safety Certification UL 61010A-1
CAN/CSA-C22.2 No. 1010.1-92
EDC/EMI Certification IECN/EN 61010-1:200-1
EN 50081
Cleaning Keep outer surfaces of the closure clean and dry. Do not block ventilation slots.
Pollution Degree 2 Do not operate in environments where conducting pollutants may be present.
Enclosure Type Degree of protection IP10."

Also has TTL compatible contact control via terminals on the rear of the unit.
Company product brochure available upon request.
Price is per unit.
Open to offers.

This equipment is located in CA