Agilent Technologies InfinityLab LC Series User Manual page 77

3 Using the Pump
Normal Phase Applications
Seals for Normal Phase Applications
For running normal phase applications on 1200 Infinity Series pumps, yellow PE
seals are required, which exist as piston seals and wash seals. Seal wash is very
uncommon for normal phase applications (no buffers needed), but wash seals
are needed for seal wash pump heads.
1290 Infinity pumps use PE seals by default. In combination with ceramic
pistons, PE seals are used for both reversed phase (1200 bar) and normal phase
applications.
1260 Infinity pumps use sapphire pistons and black PTFE piston and wash seals
by default (600 bar). Such PTFE seals create small wear particles in normal
phase applications, which can clog valves and other parts in the flow path.
PE seals have a limited life time when used with normal phase solvents and
sapphire pistons. Agilent recommends a maximum pressure of 200 bar for this
combination, which shall also be applied for pressure tests.
Choice of Normal Phase Valves and Seals
Table 17
Inlet valves
Outlet valves
Seals
Agilent InfinityLab LC Series 1260 Infinity II Isocratic and Quaternary Pumps User Manual
Recommended valves and seals for normal phase applications
1260 Infinity
1260 Infinity Inlet Valve Type N
(G1312-60166)
Outlet Valve Type N/SFC
(G1312-60167)
PE seals (pack of 2) (0905-1420)
Wash Seal PE (0905-1718)
1290 Infinity
1290 Infinity Inlet Valve Type N
(G4220-60122)
1290 Infinity Quat Inlet Valve Type N
(G4204-60122)
1290 Infinity Outlet Valve Type N
(G4220-60128)
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