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67Damage from Overfilling your Liquid Nitrogen Dewar
Some of our customers have expressed concern over experiencing sudden vacuum loss to a few of their cryogenic dewars. These were returned to the factory and immediately leak checked. They were then revac'd...
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70Liquid Nitrogen Storage Environments
Cryogenic Freezers: Liquid Nitrogen Storage Supply An ample supply of refrigerant must be maintained where liquid nitrogen (LN2) refrigeration is in work. At least three-day supply of liquid...
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59Shipping Cryogenic Specimens from Liquid Nitrogen Storage
Validation of Shipping Conditions Review of Packaging Test Report For the material being shipped, the shipper is accountable for choosing suitable packaging. To meet the regulation requirements, a...
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60Specimen Retrieval from Liquid Nitrogen Dewars or Freezers
Specimen Retrieval The below presumed method is recommended for the retrieval of cryogenically frozen specimens from cryogenic freezers for distribution, and is also applicable to other liquid nitrogen...
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58Increasing Sample Storage Temperature Above -132°C (GTTW)
PBMCs are typically stored in the cryogenic vapor phase of liquid nitrogen (-150°C). It is quite possible that cryogenically preserved samples would frequently be exposed to GTTW when retrieval of specimens...
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58Question and Answer: Cryogenic Freezers 2
Q. Please let me know how the gas by-pass can be disconnected. A. The bypass is nothing but a plug and play option. The bypass cycle will happen if the TEC-2000 spots a bypass sensor...
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57Changes to Cryogenic Freezers
Instead of 8 of the 2” casters, the 1400/1411 has been changed to use 4 of the 3” casters. This will enable the cryogenic freezer to be moved more easily. The overall height of the freezers has been...
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60Current Good Manufacturing Practices (cGMP) for Liquid Nitrogen Storage
cGMP are regulatory guiding principles that ought to be interpreted by the repository to be in accord with its circumstances. For larger, corporate repositories, this cGMP may be more relevant, but academic...
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51Question and Answer: Remote Alarm Contacts & Liquid Nitrogen Pressures
Remote alarm contacts Q. Please let us know whether the TEC-2000 have a volt-free contact? A. I suppose that they are inquiring whether it has dry alarm contacts, which normally...
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53Question and Answer: Cryogenic Freezers
Q. Can you tell me the reason why the lid switch was added to the 511? A. Effective June 04, the lid switch was added to the 511. For UL compliance it was added. We will begin applying the...
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