Agilent InfinityLab LC Series Diode Array Detectors User Manual 67
4 Preparing the Module
Solvent Information
Platinum/Iridium
Platinum/Iridium is inert to almost all common acids, bases and solvents. There
are no documented incompatibilities for HPLC applications.
Fluorinated polymers (PTFE, PFA, FEP, FFKM, PVDF)
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/G7122A, 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.
The tubing of the leak sensor is made of PVDF (polyvinylidene fluoride), which is
incompatible with the solvent DMF (dimethyl formamide).
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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