Waters TA Instruments Sample/Temperature Stage Operator's Manual page 12

Sample/Temperature Stage
Liquid nitrogen can cause rapid suffocation without warning.
Store and use in an area with adequate ventilation.
Do not vent a liquid nitrogen container in a confined space.
Do not enter a confined space where nitrogen gas may be
present unless the area is well ventilated.
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!
WARNING
Potential Asphyxiant
TA I
NSTRUMENTS
S /T S
AMPLE EMPERATURE TAGE