July 29, 2013, 715003794 Rev. B v
Considerations specific to the Waters Alliance e2695 Separations
Module
Solvent leakage hazard
The source exhaust system is designed to be robust and leak-tight. Waters
recommends you perform a hazard analysis, assuming a maximum leak into
the laboratory atmosphere of 10% LC eluate.
Flammable solvents hazard
When using flammable solvents, ensure that a stream of nitrogen
continuously flushes the instrument’s source, and the nitrogen supply
pressure remains above 690 kPa (6.9 bar, 100 psi). You must also install a
gas-fail device that interrupts the solvent flowing from the LC system in the
event the supply of nitrogen fails.
Warning:
• To confirm the integrity of the source exhaust system, renew
the source O-rings at intervals not exceeding one year.
• To avoid chemical degradation of the source O-rings, which can
withstand exposure only to certain solvents, determine whether
any solvents you use that are not listed are chemically
compatible with the composition of the O-rings.
Warning: To prevent ignition of flammable solvent vapors in the
enclosed space of a mass spectrometer’s ion source, ensure that nitrogen
flows continuously through the source. The nitrogen supply pressure
must not fall below 690 kPa (6.9 bar, 100 psi) during an analysis
requiring the use of flammable solvents. Also a gas-fail device must be
installed, to interrupt the flow of LC solvent should the nitrogen supply
fail.
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