Calibrating; Quality Control - Waters APGC Operator's Manual Supplement

Calibrating

To calibrate GC 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. 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.
ISM classification
ISM Classification: ISM Group 1 Class A
This classification has been assigned in accordance with IEC CISPR 11
Industrial Scientific and Medical (ISM) instruments requirements. Group 1
products apply to intentionally generated and/or used conductively coupled
radio-frequency energy that is necessary for the internal functioning of the
equipment. Class A products are suitable for use in commercial (that is,
nonresidential) locations and can be directly connected to a low voltage,
power-supply network.
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