INFICON HAPSITE ER Chemical Identification System - Manual (Page 537)

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HAPSITE ER Operating Manual
NIST Library . . . . . . . . . . . . . . . . . . NIST stands for National Institute of
Standards and Technology Mass Spectral
Library. This is a library of spectra of
compounds which can be searched to
tentatively identify unknown compounds.
Noise Check . . . . . . . . . . . . . . . . . . An option in the Tune program and on the
HAPSITE LCD which checks the system for
background noise. The results of the noise
check are used to discriminate against
baseline noise during analysis.
Pascal (pa) . . . . . . . . . . . . . . . . . . . Unit of pressure, equal to 1 dyne per cm
2
.
Equivalent to 7.5 x 10
-3
Torr and
1.45 x 10
-4
PSI.
PEEK . . . . . . . . . . . . . . . . . . . . . . . . Polyetheretherketone. A contamination
resistant material used for a number of
fittings in the HAPSITE and HSS.
Phase. . . . . . . . . . . . . . . . . . . . . . . . The coating on the inside of the gas
chromatograph column by which organic
vapors are retained.
PPB . . . . . . . . . . . . . . . . . . . . . . . . . Parts per billion concentration level.
PPE . . . . . . . . . . . . . . . . . . . . . . . . . Personal Protective Equipment.
PPM . . . . . . . . . . . . . . . . . . . . . . . . . Parts per million concentration level.
PPT . . . . . . . . . . . . . . . . . . . . . . . . . Parts per trillion concentration level.
Purge . . . . . . . . . . . . . . . . . . . . . . . . A Headspace Sampling System state which
is used to remove moisture and sample from
the system by pushing clean nitrogen
through the HSS and HAPSITE. This
function is specified in the Inlet Method in the
Acquire program.
Purity . . . . . . . . . . . . . . . . . . . . . . . . A description of how well an acquired
spectrum matches a reference spectrum in
location and intensity of peaks.