Inserting or Removing Canisters/Racks:
The neck plug should remain in the container when the stored or
shipped material is not being accessed to prevent unnecessary loss
of liquid nitrogen and accumulation of ice.
When removing material from the canister/rack, withdraw the canis-
ter/rack just far enough to remove contents, and do so as quickly
as possible. Completely withdrawing the canister/rack will expose
the stored material to room temperature conditions.
When room temperature product is added, slowly lower the canis-
ter/rack into the shipper to reduce the boiling of liquid nitrogen and
the surge of cold nitrogen gas. When inserting the canister/rack, tilt
the bottom of the canister/rack in the direction of the index ring
notch.
With regular usage moisture can accumulate in the shipper as a result
of lowering a frosted canister back into the shipper cavity. This mois-
ture will displace nitrogen in the adsorbant material on the subse-
quent filling and effect the overall holding time.
Step 6.
CAUTION: Shipper must be kept upright when in
use. The holding time will be drastically reduced
when the unit is on its side. Liquid nitrogen spills
can be avoided by following the above-men-
tioned filling process.
Place the pre-cooled material to be stored in the pre-cooled canister
and lower it into the necktube. Install the necktube core and cap to
hold the canister in place.
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