Liquid nitrogen vessels旨在支持在低温温度（-196°C至-210°C）处的样品的长期储存。冷冻保存的过程广泛用于临床诊断，免疫疗法开发，食品和饮料和半导体储存。用低温保护剂（例如DMSO）制备的样品可以在储存在液氮中时可保持可行于多达十倍。
Liquid Nitrogen Tanks and Styles
Liquid nitrogen tanks以两种主要样式制造：
- Pressurized cryogenic freezersfor long-term liquid- or vapor-phase LN2 storage
- Non-pressurized, benchtop dewars用于液氮转移。
Cryogenic freezers设计为样品检索系统（带锁定盖子，低液位指示器和声音警报）或IATA批准的全球样品运输船舶。
A - Liquid Nitrogen Vessel Design
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A1 - Benchtop.
Benchtop liquid nitrogen containers设计用于使用点，短期样品存储或将LN2转移到运输容器或冷阱中。Benchtop Dewars储存少于10升液氮，不包括样品储存架。某些台式船只包括携带手柄，以便容易运输和排气的盖子，以防止过压。
A2 - Free-Standing Liquid Nitrogen Systems
Free-standing liquid nitrogen systems对于低温环境中的长期样品储存是最佳的。选择型号包括冷冻盒机架，便于样本识别，低液位警报以维持低温保存条件，以及用于高安全性区域的锁定盖子。高容量，独立式系统设计用于储存超过10,000个样品和超过300升液氮。
B - Application
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B1 - Long-Term Storage System
Nitrogen Storage Systems for Cryogenics
Long-term sample storage and retrieval systems include racks compatible with 81-cell or 100-cell cryogenic boxes to maximize sample capacity. Certain systems include locking lids for added sample protection and wheeled bases for easy transport. Low liquid level alarms alert users when an LN2 refill is required.
Low-capacity systems store less than 200 samples while high-capacity systems store more than 10,000 samples. Static holding times vary from less than 20 days to more than 300 days.
Shop N2 Storage Systems for Cryogenics
B2 - 液氮转移容器
Benchtop transfer vessels设计用于将液氮从储罐运送到样品储存系统或运输容器。选择转移容器与加压液体抽取装置兼容，以防止LN2溢出和蒸发。
液氮转移容器s by Thermo Fisher Scientific
B3 - Liquid Nitrogen Dry Shipper
干货船只保持全球样品运输的低温条件。选择单位包括21CFR第11部分合规性的安全数据记录系统。
C - Liquid Nitrogen Vial Storage Capacity
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低温存储系统utilize racks compatible with 81-cell or 100-cell cryo-boxes to maximize sample capacity. Samples are generally stored in 1.5 ml or 2 ml cryo-tubes or twist-cap vials. Low-capacity systems are designed to store fewer than 1,000 samples, while high-capacity containers store more than 10,000 samples.
D - Liquid Nitrogen Capacity
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For laboratories without a liquid nitrogen delivery service, cryogenic vessels are earmarked as long-term LN2 holding tanks to supply sample storage systems and cold traps used throughout the lab.
For labspurchasing an LN2 holding tank，关键规格是液氮储存能力。低通量系统储存少于50升的液氮，而高通量罐储存超过200升。
E - Liquid Nitrogen Static Holding Time
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Static holding time is the length of time listed in days, during which the cryogenic tank retains the supplied volume of liquid nitrogen. This metric, however, presumes that the container is not accessed during the stated period of time. LN2 evaporation will occur each time the cryogenic tank is opened.
Narrow-neck pressurized containersare designed to reduce LN2 evaporation rates, whereas wide-neck dewars allow for greater liquid nitrogen evaporation each time the container is opened.
F - Liquid Nitrogen Application-Specific Features
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F1 - 低温LN2电平报警，用于低温罐
Certain cryogenic tanks, such asThermo Fisher Locator Storage Systems,包括超声水平与连续监控s digital LED readouts and audible/visual alarms when liquid nitrogen levels fall below set-point.
Shop Cryogenic Tanks with Alarms
F2 - Liquid Nitrogen Rack System
Sample storage systems accommodate stainless steel and aluminum racks for easy retrieval of cryo-storage boxes. Racks are compatible with 81-cell or 100 cell boxes for 2 ml cryo-tubes or 1.5 ml twist-cap vials. Certain models offer racks compatible with 5 ml high-capacity vials.
F3 - Liquid Nitrogen Locking System
For high-security sample storage, certain LN2 containers include locking lids equipped with optional padlocks, keypads or fingerprint scanners.
Shop Liquid Nitrogen Tanks and Storage Products
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