TA Instruments TMA 2940, Руководство оператора

Страница: 14 / 176

TA I
NSTRUMENTS
TMA 2940
XIV
1. Wear goggles or a face shield, gloves that
are large enough to be removed easily, and a
rubber apron. For extra protection, wear
high-topped, sturdy shoes, and leave your
pant legs outside the shoe tops.
2. Transfer the liquid slowly to prevent thermal
shock.
3. Use containers having adequate low-
temperature properties. Ensure that closed
containers have vents to relieve pressure;
liquid nitrogen evaporates rapidly at room
temperature.
4. The purity of liquid nitrogen alters as it
evaporates. If much of the liquid in the
container has evaporated, check the remain-
ing liquid before using it for any purpose in
which high oxygen content is dangerous.
IF BURNED BY LIQUID NITROGEN...
1. Flood the area (skin or eyes) with large
quantities of cool water IMMEDIATELY;
then apply cold compresses.
2. See a doctor IMMEDIATELY if the skin is
blistered or if there is a chance of eye
infection.