Waters Xevo TQD Operator's, Overview And Maintenance Manual page 198

Mass spectrometer shock hazard
This warning applies to all Waters mass spectrometers.
Warning:
protective panels. The components they cover are not user-serviceable.
This warning applies to certain instruments when they are in Operate mode.
Warning:
the mass spectrometer when the instrument is in Operate mode. To
avoid nonlethal electric shock, make sure the instrument is in Standby
mode before touching areas marked with this high-voltage warning
symbol.
Biohazard warning
This warning applies to Waters instruments that can be used to process
material that can contain biohazards: substances that contain biological
agents capable of producing harmful effects in humans.
Warning:
process potentially infectious human-sourced products, inactivated
microorganisms, and other biological materials. To avoid infection with
these agents, assume that all biological fluids are infectious, observe
Good Laboratory Practice (GLP), and consult your organization's
biohazard safety representative regarding their proper use and
handling. Specific precautions appear in the latest edition of the US
National Institutes of Health (NIH) publication, Biosafety in
Microbiological and Biomedical Laboratories (BMBL).
A-4 Safety Advisories
To avoid electric shock, do not remove the mass spectrometer's
High voltages can be present at certain external surfaces of
Waters instruments and software can be used to analyze or