Best Lab Dewar Flasks of 2025

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Lab Dewar flasks are essential tools used in scientific laboratories for the storage and transportation of extremely cold substances. These flasks are made from high-quality materials such as borosilicate glass or stainless steel, ensuring durability and resistance to thermal shock. With their double-walled construction and vacuum insulation, Lab Dewar flasks provide excellent thermal insulation, allowing for the long-term preservation of cryogenic liquids like liquid nitrogen or helium. These flasks come in various sizes, making them versatile for a wide range of laboratory applications.
At a Glance: Our Top Picks
Top 10 Lab Dewar Flasks
StonyLab 350ml Borosilicate Dewar Flask
The StonyLab Dewar Flask is a versatile laboratory tool with a 350ml capacity, designed in a practical cylindrical shape. Its 60mm interior diameter and 200mm depth make it ideal for storing various liquids, including liquid nitrogen. Made from durable double-walled borosilicate glass, this flask is built to withstand temperature changes while ensuring safety. The aluminum base adds sturdiness, and the cushioned plastic rim provides extra protection from accidental drops. With StonyLab’s commitment to quality and customer satisfaction, you can trust that any issues will be promptly addressed.
Crystal Technologies SDF-500 Dewar Flask
The Crystal Technologies SDF-500 Stainless Steel Dewar Flask is a high-quality lab supply designed for various scientific applications. With its compact dimensions of 9.9 cm in length, 10.8 cm in width, and 24.1 cm in height, this flask is perfect for storing and transporting liquids in a laboratory setting. The stainless steel construction ensures durability and resistance to corrosion, making it a reliable choice for long-term use. Additionally, the Crystal Dewar Flask's 500mL capacity allows for ample storage of liquids. Whether you are conducting experiments or storing samples, this flask provides convenience and peace of mind, ensuring that your liquids are kept safe and secure.
Cole-Parmer 1000 mL Dewar Flask
The Cole-Parmer Dewar Flask is a reliable lab tool designed for storing and transporting liquids. With a generous capacity of 1000 mL, it allows you to manage larger volumes efficiently. The outer diameter measures 3.3125 inches, while the inner diameter is 2.8125 inches, providing ample space for various applications. This flask is categorized as a lab dewar, making it ideal for experiments that require temperature control. Its sturdy handle ensures easy handling, giving you peace of mind when moving or pouring contents.
Crystal Technologies SDF-1000 Dewar Flask
The Crystal Technologies Dewar Flask, with a capacity of 1000mL, is designed for laboratory use. Its compact size, measuring 12 inches in length, 4.72 inches in width, and 7 inches in height, makes it easy to store and transport. This flask is perfect for keeping substances at stable temperatures, which is essential for various experiments. The stainless steel construction ensures durability and resistance to corrosion, providing a reliable option for your lab needs. With this flask, you can efficiently manage your materials and enhance your workflow.
StonyLab 250ml Hemispherical Dewar Flask
The StonyLab Dewar Flask is a versatile laboratory tool with a capacity of 250 ml, perfect for various experiments. Its hemispherical design features an interior depth of 90mm and a diameter of 94mm, providing ample space for your liquids. Made from silvered borosilicate glass, this flask is built to withstand extreme temperatures and is ideal for storing liquid nitrogen. The aluminum base enhances stability, ensuring that your experiments run smoothly. With StonyLab's commitment to quality and customer service, you can trust that any issues will be promptly addressed.
Pope Scientific 8600 Jar Vacuum
The Pope Scientific Jar Vacuum is designed for optimal performance with liquid nitrogen and other cryogenic gases. Its fully silvered construction enhances insulation, ensuring that your samples remain at the desired temperature for longer periods. With a compact size, measuring 10.8 L x 23.1 H x 11.5 W centimeters, it fits easily into any lab workspace. This unit is ideal for researchers and professionals who require reliable and efficient storage solutions for sensitive materials. Using this vacuum will help you maintain the integrity of your samples while providing convenience and ease of use.
SCILOGEX 2L Wide Mouth Dewar Flask
The SCILOGEX Wide Mouth Dewar is an ideal solution for your liquid nitrogen and dry ice storage needs. Its wide opening allows for effortless access, making it a favorite in laboratory settings where quick retrieval is essential. Built with durable, rust-free materials, this Dewar flask ensures safe transport while minimizing spills. Designed for optimal safety, it reduces evaporation and can hold contents for 38 to 54 hours, depending on size. The easy-to-use lid clamps provide secure closure, giving you peace of mind during transportation.
Kemtech America F110665 Dewar Flask
The Kemtech Dewar Flask is a versatile lab supply designed for efficient storage of cryogenic materials. With a capacity of 665 ml, it provides ample space for your samples, ensuring you have enough room for your experiments. The flask features a tall form with a metal housing, which adds durability and protection, making it ideal for various lab environments. Measuring 195 mm in depth and 70 mm in diameter, it fits well on most lab shelves and workspaces. This flask is imported from China and weighs 12 pounds, making it sturdy yet manageable for everyday use.
SCILOGEX Low Profile Dewar Flask 0.17L
The SCILOGEX Dewar Flask is designed to provide an optimal storage solution for cryogenic materials like liquid nitrogen and dry ice. Its low-profile shape makes it easy to fit into your lab setup, enhancing convenience. Made from durable stainless steel, it resists corrosion and ensures safety when handling harsh chemicals. With a precise capacity of 0.17 liters, it's perfect for small-scale applications, allowing you to efficiently manage liquified gases. This versatile flask can be used for cooling, preservation, or experimental setups, making it an essential tool for your scientific work.
VEVOR 3L Liquid Nitrogen Tank
The VEVOR Liquid Nitrogen Tank is designed for durability and convenience. Crafted from high-strength aviation aluminum alloy, it protects your liquid nitrogen and samples from damage. You can trust its insulation and vacuum design to keep your samples stored safely for longer periods. The tank includes six canisters, allowing you to retrieve small amounts of nitrogen or hold samples easily. Plus, each container comes with a protective sleeve to prevent scratches and damage, making it easy for you to transport it wherever you need.
Frequently Asked Questions (FAQs)
1. What is a Dewar flask used for?
Dewar flasks are commonly used in research laboratory settings to store and transport liquefied gases. They are particularly useful for flash freezing samples. It's important to ensure proper drying of Dewar flasks to maintain optimal conditions before using liquefied gases or other liquids.
2. Why does Dewar's flask not need a lid?
Dewar flasks typically do not require a lid because they are designed to minimize heat transfer. The absence of a lid prevents warm air from entering the flask through convection since warm air rises and cannot fall into the flask. This design feature helps maintain the desired temperature within the flask, especially when storing liquid oxygen.
During our lab dewar flask research, we found 24 lab dewar flask products and shortlisted 10 quality products. We collected and analyzed 2,313 customer reviews through our big data system to write the lab dewar flasks list. We found that most customers choose lab dewar flasks with an average price of $215.27.
The lab dewar flasks are available for purchase. We have researched hundreds of brands and picked the top brands of lab dewar flasks, including stonylab, Crystal Technologies, Cole-Parmer, Pope Scientific, Scilogex. The seller of top 1 product has received honest feedback from 2,078 consumers with an average rating of 4.9.

Brian Howie is a content writer and senior industrial designer. After graduation from Westminster College, he has been engaged in product design and manufacturing for 18 years. Brian Howie has always found great pleasure in designing industrial products and sharing his ideas and experience online.