1. Install syringe pump fittings as shown under 'Setup' and illustrated to the left. The syringe (if not already connected) screws into the bottom of a 4-way valve and is connected to a stepper motor. The syringe can load liquid through the sample port (right) and dispense liquid through the waste port (top) or the injection port (left; connected to tee via 1/16" OD teflon tubing).
  2. Plug in the 15-pin cable to power the syringe pump from the electronics box and to enable communications with the PAMControls software. Most operations are controlled through the software - follow the on-screen instructions.
  3. If syringe cleaning is required (beyond basic solvent rinsing operations):
    • Disconnect the syringe from the valve
    • Remove the piston from the syringe and clean it in an ultrasonic bath
    • Rinse the glass body with solvent
    • Dry the glass body in an air stream.
  4. If sample dilution is required, dilute with a solvent of appropriate reactivity and polarity. Some recommendations are provided below. Rate constants are given in units of cm^3/molec/sec. Rate constants for other potential solvents can be located here: http://kinetics.nist.gov/kinetics/index.jsp
Solvent Formula Relative Polarity
k_OH k_Cl k_NO3 k_O3
Carbon Tetrachloride CCl4 0.052        
Chloroform CHCl3 0.259        
Acetonitrite CH3CN 0.460        
Water H2O 1.000 -- -- -- --