Gilson VERITY 1910 MS User Manual page 31

Plumbing Connections
The flow rates of most lc systems are too high for microspray operation with the
VERITY 1910 MS Detector. The analysis of samples with an lc system can therefore only
be carried out using a split flow interface (SFI) set up with the correct split ratio. Refer to
the Flow Splitting appendix. Refer to the plumbing diagrams below to make the front panel
connections (Rear Panel Connections on page 24).
prOCeDUre
1. Make the plumbing connections between the lc system, VERITY 1910 MS Detector, and
the MiDas. Refer to Plumbing Diagrams on page 32.
● If using the standard Gilson split ratio proceed to step 2, but if a custom split ratio is
desired proceed to step 3.
● If plumbing the system upon initial installation, do not complete the connection
between the backpressure regulator (S) and microfilter tubing (10) attached to the split
flow interface (SFI). Ensure that the MS detector is plumbed and pumped down before
completing the auto Tune (calibration) procedure required for the initial installation of
the system. Refer to Power On on page 44.
2. Fit the waste line to the waste port of the SFI. Proceed to step 5. The other end of the
waste line can either be directed to a waste receptacle or to another analytical instrument,
for example, a UV detector.
The split ratios can change if the PEEK tubing from the waste port is attached to another
NOTE
analytical instrument. The theoretical calculations provided in this user's guide cannot be used
for such systems.
3. calculate the desired split ratio ensuring the flow to the spraychip is acceptable. Refer to
Split Ratios on page 79.
The flow rate of the SFI can be measured using the flow meter tool. Refer to
NOTE
Liquid Flow Rate Measurement on page 62.
If the mobile phase from the high flow tubing is going to waste, then ensure all local
WARNING
safety guidelines are followed for its collection and disposal.
4. Fit the SFI to the VERITY 1910 MS Detector using the procedure detailed in
Clean the Split Flow Interface on page 65.
If the VERITY 1910 MS Detector is pumped down, a nitrogen flush must always be used when
NOTE
fitting the SFI to or removing the SFI from the VERITY 1910 MS Detector.
5. close the door.
6. Switch on the VERITY 1910 MS Detector by flipping the power switch on the
rear panel (P1).
7. Power on the VERITY 1910 MS Detector by pressing the power button on the
front panel (Y).
VERITY® 1910 MS DETEcToR
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