Operation
46 Agilent Vapor Generation Accessory VGA 77 and VGA 77P User’s Guide
NOTE
You can do this by filling a suitable measuring cylinder to a convenient reference
mark with distilled water, then placing the sample capillary into the cylinder and
observing the volume of water pumped out of the cylinder over a timed interval.
With a 50 Hz power supply the uptake rate should be about 7 mL
per minute; with a 60 Hz power supply it should be about 8 mL
per minute.
NOTE
Note the exact flow rates for future reference in the AA performance log in
Appendix A at the end of this manual.
8 Similarly measure the uptake rate for each of the other pump
tubes. The uptake rate for each should be within the range
0.8–1.2 mL/min.
NOTE
Note the exact flow rates for future reference in the AA performance log in
Appendix A at the end of this manual.
CAUTION
If you are using the VGA 77 with an ICP system, you must now adjust the speed
of the instrument peristaltic pump until liquid is being pumped out of the
gas/liquid separator faster than it is being pumped in by the VGA 77. Set the
spectrometer Pump speed to a minimum of 35 rpm.
Your VGA 77 is now ready for use. You should now either:
Proceed to ‘AA Setup’ on the following page, if you are using the
VGA 77 with an AA system
Proceed to ‘ICP setup on Page 49, if you are using the VGA 77
with an ICP system, or
Carry out the instructions for closing down the VGA 77 on Page
53.
To Next Page
Loading...
Need help?
General
