Thermo Scientific Arctic Express CK50920 Mode D'emploi page 18

Section 4
Operation
Preparing for
Samples arriving in Arctic Express Dual vessels may be transferred to other
vessels or may be kept in the Dual shipper. If arriving samples are to be
Shipping (continued)
permanently kept in the Arctic Express Dual vessels, the vessel must be
filled with liquid nitrogen. Do not fill above the level of the fiberglass neck
tube. As damage sometimes occurs in transit, it is important to check the
performance of the vessel using a wooden yardstick as described in
'Measuring Liquid Nitrogen Quantity'. Expected losses of liquid nitrogen
may be calculated from values found in 'General Specifications'. If
expected boil-off rates are significantly exceeded or if frost patches appear
on the outside of the vessel, call Technical Services at once. Do not leave
precious samples unattended! As a precaution, it is advisable to keep a
supply of liquid nitrogen near the suspect vessel.
Thermo Scientific Cryogenic Dual Shippers 4-3