Filling Dewars; Precautions - Micromeritics ASAP 2460 Operator's Manual

Filling Dewars

Filling Dewars

Precautions

Always handle dewars with care. Any product incorporating a vacuum is a potential
safety hazard and should be treated with caution.
We recommend the following be observed when handling dewars containing liquefied gases:
• Protect yourself by wearing 1) goggles (or a face shield), 2) an insulated or rubber apron, and 3)
insulated gloves.
• When pouring liquefied gases from one container to another: 1) cool the receiving container
gradually to minimize thermal shock, 2) pour the liquefied gas slowly to prevent splashing, and 3)
vent the receiving container to the atmosphere.
• 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 is coated
with some form of protective coating.
• Do not handle heavy objects above the dewar. If an object of sufficient weight is accidentally
dropped into the dewar, the dewar may shatter.
2-34
ASAP 2460 Operator's Manual
246-42800-01 - Aug 2013