The holding times in the table on the left are intended as a guide only, to
illustrate the probable time it takes for a stainless steel Thermoflask, with
lid, to empty completely after being filled with liquid nitrogen. The times
may change depending on higher or lower ambient temperatures, whether
or not the lid is removed for examination of the contents, and according
to the mass of the material being frozen.
Even though the Thermoflasks may be almost empty of liquid nitrogen,
they will continue to be effective storage vessels for frozen material because
the contents will be held in the vapor phase of the nitrogen, i.e. the liquid
nitrogen will have boiled to become a very low temperature gas. This can
benefit users who wish to store materials in a frozen state, but not at the
exceptionally low temperature of the liquid nitrogen itself.
Liquid Nitrogen Holding Times
3
Thermoflasks
Handling Thermoflasks (cont.)
Size
Holding Time
1 Liter
38 Hours
2 Liters
48 Hours
4.5 Liters
54 Hours
Specifications
Catalog
Number
Capacity -
Liters
Inside
Diameter -
Inches (cm)
Outside
Diameter -
Inches (cm)
Height -
Inches (cm)
Ship Wt. -
lbs (kg)
2122
1.0
3.6 (9.1)
4.6 (11.7)
9.0 (22.9)
6 (2.7)
2123
2.0
4.2 (10.7)
5.6 (14.2)
10.7 (26.9)
8 (3.6)
2124
4.5
5.9 (15.0)
7.2 (18.2)
13.8 (35.0)
10 (4.5)
2129
1000ml
5.1 (13.0)
6.3 (16.0)
4.5 (11.6)
8 (3.6)
2130
1900ml
6.1 (15.5)
7.3 (18.5)
5.4 (13.7)
10 (4.5)
Warning
Do not cover any glass Thermoflask with any fixed or heavy
object that might form a seal around the rim either naturally, or induced
by freezing.
s
Warning
If liquid gases or other materials of extremely low temperatures are
being used, ONLY use a stirring rod with a PTFE
(polytetrafluoroethylene) or comparable form of protective coating, to mix
or stir substances in the Thermoflask.
s
