Agilent 1260 Infinity DAD and MWD User Manual 97
Using the Detector
4
Solvent Information
Fluorinated polymers (PTFE, PFA, FEP, FFKM)
Fluorinated polymers like PTFE (polytetrafluorethylene), PFA
(perfluoroalkoxy) and FEP (fluorinated ethylene propylene) are inert to
almost all common acids, bases, and solvents. FFKM is perfluorinated rubber,
which is also resistant to most chemicals. As an elastomer, it may swell in
some organic solvents like halogenated hydrocarbons.
TFE/PDD copolymer tubings, which are used in all Agilent degassers except
G1322A, are not compatible with fluorinated solvents like Freon, Fluorinert,
or Vertrel. They have limited life time in the presence of
Hexafluoroisopropanol (HFIP). To ensure the longest possible life with HFIP, it
is best to dedicate a particular chamber to this solvent, not to switch solvents,
and not to let dry out the chamber. For optimizing the life of the pressure
sensor, do not leave HFIP in the chamber when the unit is off.
Sapphire, Ruby and Al
2
O
3
-based ceramics
Sapphire, ruby and ceramics based on aluminum oxide Al
2
O
3
are inert to
almost all common acids, bases and solvents. There are no documented
incompatibilities for HPLC applications.
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