Overview
Cryogenic bottles, also known as Dewar flasks, are essential for safely handling liquefied gases at temperatures as low as -196°C (liquid nitrogen). These containers are widely used in scientific research, medical cryopreservation, and industrial gas storage. Their design minimizes heat transfer, ensuring long-term thermal stability. The bottles are engineered to prevent evaporation losses and maintain the purity of stored substances. Modern cryogenic bottles often include safety features like pressure relief valves and sturdy outer casings to withstand rough handling in transit.
Structure and Working Principle
A cryogenic bottle consists of an inner chamber surrounded by a vacuum layer, which drastically reduces heat conduction and convection. Some models incorporate reflective coatings to further limit radiative heat transfer. The double-walled construction is typically sealed to maintain vacuum integrity. The working principle relies on the vacuum's insulation properties, which isolate the stored cryogenic fluid from external temperatures. High-quality bottles may include additional insulation materials, such as perlite or multilayer superinsulation, to enhance performance.
Key Features
Vacuum insulation is the defining feature, enabling temperature retention for days or weeks. Durable materials like 304 or 316 stainless steel resist corrosion and mechanical stress. Ergonomic designs often include carrying handles or trolley compatibility for easy transport. Advanced models offer accessories like measuring dipsticks, neck tubes for reduced evaporation, and customizable openings to fit specific laboratory apparatus. Frost-free necks are another innovation, preventing ice buildup that could compromise sealing.
Application Areas
In laboratories, cryogenic bottles store biological samples, superconductors, and reagents. The medical field uses them for preserving stem cells, vaccines, and reproductive materials. Industrial applications include welding gas storage and food freezing processes. Specialized versions serve niche markets, such as space technology (for rocket propellants) and energy research (liquid hydrogen storage). Portable cryogenic bottles enable fieldwork in remote locations where reliable cooling is essential.
Maintenance and Precautions
Regular inspections should check for vacuum loss (indicated by frost formation) and structural integrity. Cleaning requires thorough drying to prevent ice blockage in valves. Always store bottles upright to prevent leaks. Safety protocols mandate using insulated gloves and face shields when handling. Never seal bottles completely, as trapped evaporating gases can cause dangerous pressure buildup. Transport should follow hazardous material regulations, even for small quantities.
B2B Procurement Guide
Industrial buyers should evaluate evaporation rates (typically 0.1–2 liters per day) and static holding time specifications. For high-throughput facilities, automated filling systems may justify higher initial costs. Bulk purchases often qualify for discounts of 10–20%. Leading manufacturers include Thermo Fisher Scientific, Taylor-Wharton, and Worthington Industries. Customization options like special neck designs or RFID tracking may be available for large orders. Always verify compliance with regional safety standards like DOT (USA) or TPED (EU).
Related Manufacturers
- 主营：气化设备、减压设备、气化站设备、CNG储气瓶组、汽化调压撬、燃气调压箱、汽化站设备、燃气调压柜、燃气调压撬、减压计量设备、天然气调压装置、燃气调压计量柜、cng减压撬、CNG天然气减压撬、LNG汽化站、LPG汽化器、二氧化碳配比柜、空温式汽化器、天然气气化站、LNG气化设备、天然气减压装置、天然气调压计量撬、CNG减压设备、调压箱
- 主营：加气机设备、CNG调压撬、LNG增压器、低温储罐、低温液体泵、低温真空绝热管、CNG减压撬、GOB回收机组、气化站设备、增压撬、LNG加气站配件、气化器、拉断阀、气化设备、真空管道、燃气调压箱、燃气调压设备、混合气配比柜、水浴加热器、LNG潜液泵保养、LNG潜液泵保养、维修、LNG加气站整套设备、LNG装卸臂、加气站整套设备
- 主营：调压箱、气化撬、调压器、杜瓦瓶生产厂家、供气设备、燃气减压撬、燃气减压阀、空温式汽化器
- 主营：真空熟食麻椒、杀菌锅、卤煮锅、夹层锅、炒锅
- 主营：BOG回收机组、调压撬、LNG气化器、低温泵、瓶组、气化器、气化撬、减压撬、LNG卸车小霸王、空温式气化器、水浴式汽化器、BOG气体压缩设备、气体汇流排、CNG减压撬、LPG汽化器、LPG气化炉、气体调压装置、燃气调压箱、混合气配比柜、气化调压撬、LNG气化撬、LNG气化站、城市燃气门站、工厂集中供气系统、空温汽化调压器
- 主营：液氮低温容器、液氮罐
- 主营：液氮储罐、液态氧气罐、二氧化碳罐、二氧化碳气瓶、低温绝热气瓶、低温贮罐、低温储罐、杜瓦瓶、低温气体储罐、快易冷低温储罐、液体氧气储罐、液氩储罐、液化天然气储罐、液体液氧储罐、液氮液体储罐、液氧液体储罐、氧气罐、液氮罐、5立方液氧储罐、液态二氧化碳储存罐、杜瓦罐、氩气储罐
- 主营：各种蓄能器及配件、囊氏蓄能器、活塞式蓄能器、氧气瓶氮气瓶二氧化碳、各种工业钢瓶、隔膜式蓄能器、皮囊、集装格 杜瓦罐
- 主营：cng减压撬、lng气化撬、空温式气化器、气瓶集装格、低温泵、低温阀、轻烃设备、燃气调压柜、氧氮氩气化器、气体配比柜、混合气设备、分气包、减压撬、减压阀、工业制氮机、拉断阀、汇流排
- 主营：液氮速冻机、液氮生物容器、液氮真空管道、低温反应釜、液氮贮罐
- 主营：PP、ABS、PC、PC/ABS、PC/PBT、PA尼龙、高温尼龙、PPS、LCP、PA46、PPA、PA9T、PA6T、弹性体、热熔胶EVA/EAA/EBA/EMA、橡胶
- 主营：LNG气化调压撬、混合气配比柜、燃气调压箱、储藏液态气体杜瓦瓶、CNG减压撬
- 主营：PP、PE、POM、POE、EVA、ABS、PC
- 主营：v型混合机、一维混合机、二维混合机、低温真空干燥箱、三维混合机、槽型混合机、螺带混合机、双锥混合机、方锥混合机、真空上料机、臭氧发生器、对开门洁净烘箱、灭菌烘箱、电热鼓风干燥箱、热风循环烘箱、真空干燥箱、真空干燥机、包衣机、脉冲式平板真空干燥箱、实验室三维混合机、运动混合机、平板真空干燥箱
- 主营：防火abs、PP、尼龙、耐低温、HDPE、LDPE、巴塞尔、晓星、台塑、大林