Agilent Technologies G1157A, User Manual

Page: 46 / 78

46 Agilent 1200 Series Valves
4 Valve Applications
Sample enrichment and Sample stripping
Figure 21 on page 45 illustrates how the Agilent 1200 Series 2 position/ 6 port
valve can be used for sample stripping. In valve position 1 Pump A transfers
the complete sample matrix onto the pre-column 1, where the matrix is
trapped while the analytes are eluted and flushed to column 2 for analysis.
Then the valve switches to position 2. Now pump B backflushes the matrix to
the waste, while pump A continues to deliver solvent to the analytical column,
where the analytes are separated and analyzed.
Agilent Technologies offers a capillary kit for sample enrichment and stripping
as displayed in
Table 11 on page 46 and Table 12 on page 47.
Capillary kit for sample enrichment/stripping (G1156-68714) with G1158A
(analytical scale)
Table 11 Capillaries
From To ID/mm Length/mm part number
Sample Enrichment
Injector/Autosampler Valve (port 1) 0.17 500 G1328-87600
Valve (port 2) Waste 0.6 (PTFE) 2000 0890-1713
Valve (port 3) Enrichment Column 0.17 400 5021-1819
Enrichment Column Valve (port 6) 0.17 600 5065-9933
Pump B Valve (port 4) 0.25 800 5065-9930
Valve (port 5) Analytical Column 0.17 400 5021-1819
Analytical Column Detector 0.17 600 5065-9933
Stripping
Injector/Autosampler Valve (port 1) 0.17 500 G1328-87600
Valve (port 2) Analytical Column 0.17 400 5021-1819
Analytical Column Detector 0.17 600 5065-9933
Valve (port 3) Pre-Column 0.17 400 5021-1819
Pre-Column Valve (port 6) 0.17 600 5065-9933
Pump B Valve (port 4) 0.25 800 5065-9930
Valve (port 5) Waste 0.6 (PTFE) 2000 0890-1713