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March 14, 2014, 715004387 Rev. B
Audience and purpose
This guide is for operators of varying levels of experience. It gives an overview
of the instrument and explains how to prepare it for operation, switch between
modes of operation, and maintain it.
Intended use of the Xevo TQD
Waters designed the Xevo TQD for use as a research tool to accurately,
reproducibly, and robustly quantify target compounds present at the lowest
possible levels in highly complex sample matrices. The Xevo TQD is not
intended for use in diagnostic applications.
When fitted with Waters APCI, APGC, APPI, ASAP, ESCi
®
, NanoFlow™ ESI,
or TRIZAIC
®
UPLC
®
options, or optional third-party sources (DART
®
, DESI,
or LDTD™), the Xevo TQD does not comply with the European Union In Vitro
Diagnostic Device Directive 98/79/EC.
Calibrating
To calibrate LC systems, follow acceptable calibration methods using at least
five standards to generate a standard curve. The concentration range for
standards should include the entire range of QC samples, typical specimens,
and atypical specimens.
When calibrating mass spectrometers, consult the calibration section of the
operator’s guide for the instrument you are calibrating. In cases where an
overview and maintenance guide, not operator’s guide, accompanies the
instrument, consult the instrument’s online Help system for calibration
instructions.
Quality control
Routinely run three QC samples that represent subnormal, normal, and
above-normal levels of a compound. If sample trays are the same or very
similar, vary the location of the QC samples in the trays. Ensure that QC
sample results fall within an acceptable range, and evaluate precision from
day to day and run to run. Data collected when QC samples are out of range
might not be valid. Do not report these data until you are certain that the
instrument performs satisfactorily.
Содержание Xevo TQD
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Страница 56: ...2 Preparing for Operation 56 March 14 2014 715004387 Rev B...
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Страница 246: ...C Materials of Construction and Compliant Solvents 246 March 14 2014 715004387 Rev B...