1290 Infinity II High-Speed Pumps User Manual 50
3Using the Pump
Solvent Information
Solvent Information
Observe the following recommendations on the use of solvents.
• Follow recommendations for avoiding the growth of algae, see “Algae Growth
in HPLC Systems” on page 64.
• Small particles can permanently block capillaries and valves. Therefore,
always filter solvents through 0.22 µm filters.
• Avoid or minimize the use of solvents that may corrode parts in the flow path.
Consider specifications for the pH range given for different materials like flow
cells, valve materials etc. and recommendations in subsequent sections.
Materials in Flow Path (G7120A)
Following materials are used in the flow path of this module:
Table 6 Materials in flow path (G7120A)
Part Materials
Degasser chamber TFE/PDD copolymer, PFA (internal tubings);
PEEK (inlets); FEP (tubings); ETFE (fittings)
Ultra clean tubings
1
1
Ultra clean tubings are available for the use with high-end MS detectors. They are also compatible to THF.
PFA (tubings), PEEK (fittings)
Microfluidic structures
2
2
Jet Weaver, Heat Exchanger
SST
SSV FFKM, PEEK
Passive inlet valve SST, gold, ruby, ZrO
2
-based ceramic, tantalum
Outlet valve SST, gold, ruby, ZrO
2
-based ceramic, tantalum
Pump head SST
Pistons ZrO
2
-based ceramic
Piston/wash seals UHMW-PE, SST
Pressure sensor SST
Automatic purge valve Polyimide, SST, DLC
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