PUMPS
The pump is one of the most critical components of an FIA, SIA, or Zone Fluidics system. This is particularily true of SIA and ZF, where the pump must measure microliter volumes of sample and reagent with high precision, as well as provide precise flow.

Global FIA offers two types of pumps for FIA/SIA/ZF, the Global FIA millGATTM pump and. the Tecan (Cavro) syringe pump.

Because of its unique combination of capabilities, the milliGAT pump has found use in a broad range of applications in addition to FIA/SIA/ZF.

MILLIGAT™
The milliGAT is a new generation pump for precision fluid handling which will pump bi-directionally both liquids and gases, or a combination of both. It features a combination of performance capabilities unmatched by any other commercial pump. In particular, its remarkable flow range of over six orders of magnitude, from nL/min to mL/min, and its capability to precisely meter volumes as small as nanoliters, make it suitable for many different fields of application, including microfluidics, HTS, dispensing, titrating, FIA, SIA, Zone Fluidics, diluting, and many others. It maintains high precision across the range of flow rates and metered volumes. The user can sequence between nanoliters and milliliters with simple pump commands.

The milliGAT is an excellent replacement for syringe pumps - it provides better performance and eliminates the need for refill cycles and syringe changes.

The milliGAT is stepper motor driven and fully computer controllable. A micro-processor driven controller controls flow rate, flow direction, metered volumes, ramp rates, automatic backlash correction, and other control parameters using serial commands via RS-232 or RS 485 communication protocols.

The milliGAT was patented by Global FIA, and is manufactured by VICI Valco, a company well known for its precision analytical valves.

While the standard package includes software and instructions to run the milliGAT as a stand-alone unit, the pump is also available with an integrated multi-position selection valve.

Features of the MilliGAT™ include:

Operating Principle

At the core of the pump are four reciprocating 1/8" pistons housed in sapphire chambers. The pistons are located in a rotor. As the motor turns the rotor, the pistons float on a stationary cam; at any given moment, one piston is filling, one is dispensing, and the other two are in transit between fill and dispense ports. The transition between each piston is engineered to yield pulseless flow.

Applications

• FIA, SIA, Zone Fluidics
• Sample introduction systems for ICP nebulizers
• Calibration source for mass spectroscopy
• Flow-based electroanalytical systems
• Flow cytometry, cell and drug perfusion
• HTS and robotic systems
• Infusion and micro-dialysis
• LC applications - micro flow, micro gradients
• Mass spectroscopy sample introduction
• Mass spectroscopy source cleaning
• Micro diluters/dispensers for nL to mL range applications
• Micro liquid transfers (nL) for micro arrays
• Microtiter plate dispensing using multiposition valves
• Post-HPLC column reagent addition, stop flow, peak collection
• Precision dispensers and sampling devices (such as autosamplers)

Product Specifications

Physical Specifications
Dimensions (mm)	Given below
Weight pump	520g
Weight motor and gear assy.	530g
Weight micro-electric controller	300g
Weight power supply	300g
Resolution MSEL=2 MSEL=32 MSEL=256	1900 pulses / 100 L (20 l/sec - 100 l/sec) 30400 steps / 100 L (0.1 l/sec - 20 l/sec) 243200 pulses / 100 L (0.0001 l/sec - 0.1 l/sec)
Pump volume range	10 nL - 109 L or continuous flow
Pump flow rate range	0.0001 - 167 L/sec (6 nL/min - 10 mL/min)
Back pressure	100 psi
Volume precision (C.O.V.)	<0.04% at 1.25 mL <0.3% at 125 µL
Fittings	10-32 female thread with Valco detail
Fluid contact	PTFE, Sapphire, PAEK, Viton, and Valcon P
Power Requirement
Rest current draw	0 mA
Operational current draw	800 mA (Typ.) (peak 1600 mA at acceleration)
Voltage	12-48 VDC, 24 VDC (Typ.)
Motor
Type	2 Phase Bipolar (1.8º per step)
Gear Assembly
Type	Planetary
Ratio	1:4.75
Communications
Type	COM1 RS-232 COM2 RS-485 (RS-422)
Baud rate	9600 (default), 4800 - 38,400 bps
Parity	None
Data bits per character	8
Stop bits	1
Error checking	None
Mode	ASCII
Environmental
Operating Temperature	0 - 50°C
Operating Humidity	< 90% non-condensing
Storage Temperature	-20°C - 70°C

TECAN CAVRO XP-3000 SYRINGE PUMPS
The Tecan Cavro XP-3000 is a state-of-the-art, minaturized syringe pump which is suitable for both SIA and FIA. It is a high precision, computer controlled pump that provides excellent accuracy and precision over a wide range of flow rates using a variety of syringe sizes. The pump comes mounted on a panel for installation in the modular FIA Frame cabinet.

Product Specifications

Feature	Value
Dimensions	Height - 5.0" Width - 1.8" Depth - 4.5" Weight - 2.5 lbs
Power Requirements	Supply Voltage - 24 VDC Current - 850 mA (Peak)
Resolution	3000 Steps
Plunger Drive	Principle - Rack and pinion with optical feedback Travel - 30 mm
Plunger Speeds	Plunger Speeds 1.2 seconds - 20 minutes/full stroke
Syringes	1.2 seconds - 20 minutes/full stroke 50, 100, 250, 500, 1000, 25000 and 5000 ul
Imprecision	<0.05% CV within run at full stroke
Inaccuracy	<1.0% at full stroke
Interface	Type - RS-232, RS-485 Baud Rate - 9600 or 38,400 Format - Data Bits: 8 Parity: No Stop Bits:1 Half Duplex
Fluid Contact	Glass, Kel-F and Teflon
Firmware	Programmable Ramps, Cutoffs, Backlash Compensation, Plunger Speeds, Delays, & Loops Change the speed on the fly Terminate moves Absolute and relative moves Diagnostics EEPROM
Valve/Valve Drive	3 Positions - Input, Output, Bypass Turn Time - 250 ms between ports Drive - Stepper motor with optical encoder for positioning feedback Fittings - 1/4-28