6 Perform an Analysis
FOR GLASS DEWARS
n
Use a plastic stirring rod when stirring substances in a Dewar containing liquefied gases (or
other materials of extremely low temperature). Do not use a glass or metal stirring rod unless it
has a protective coating.
n
Do not handle heavy objects above the Dewar. If unavoidable, place a protective cover over the
Dewar opening. If an object of sufficient weight is accidentally dropped into the Dewar, shat-
tering may occur.
n
If the Dewar has a protective mesh covering, do not remove it. This cover minimizes the risk of
flying particles should the Dewar be knocked over, dropped, or broken.
6 - 2
TriStar II Plus Operator Manual
303-42800-01 (Rev M ) — Sep 2023
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