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
- 不n-pressurized, benchtop dewars用于液氮转移。
Cryogenic freezersare designed as sample retrieval systems (with locking lids, low liquid level indicators, and audible alarms) or IATA-approved shipping vessels for global sample transport.
A - 液氮容器设计
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A1 - Benchtop
台式液氮容器设计用于使用点，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 - 长期存储系统
低温氮气储存系统
长期样品存储和检索系统包括与81个单元或100个单元冷冻盒兼容的机架，以最大化样品容量。某些系统包括锁定盖子，用于添加样品保护和轮式基座，以便于运输。低液位警报警告用户当需要LN2 refile时。
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
台式转移船从h是用来运输液态氮olding tank to a sample storage system or shipping vessel. Select transfer vessels are compatible with pressurized liquid withdrawal devices to prevent LN2 spillage and evaporation.
Thermo Fisher Scientific的液氮转移血管
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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低温存储系统利用兼容81单元或100个单元冷冻盒的机架，以最大限度地提高样本容量。样品通常储存在1.5ml或2ml冷冻管或扭转帽小瓶中。低容量系统设计用于储存少于1000个样本，而大容量容器存储超过10,000个样本。
D - 液氮能力
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对于没有液氮递送服务的实验室，低温容器被指定为长期LN2储罐，以供应在整个实验室中使用的样品储存系统和冷陷阱。
对于实验室purchasing 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 - 液氮静态保持时间
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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 - 液体氮应用特异性特征
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F1 - Low LN2 Level Alarm for Cryogenic Tanks
某些低温罐，如Thermo Fisher Locator Storage Systems, include ultrasonic level monitors with continuous 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 - 液氮锁定系统
对于高安全性样本存储，某些LN2容器包括锁定盖子，配备有可选的挂锁，键盘或指纹扫描仪。
商店液氮罐和储存产品
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