VWRCryoPro Liquid Dewars, L Series L-20 L-20 Liquid Dewar Review

Uncovering the VWRCryoPro Liquid Dewars, L Series L-20 L-20 Liquid Dewar: Real Review

Liquid nitrogen. It’s not something you think about every day, but for certain applications, it’s absolutely essential. From cryopreservation of biological samples to cooling sensitive equipment, the safe and efficient handling of liquid nitrogen is paramount. I’ve spent years rigging up makeshift cooling systems and jury-rigged transport solutions, always knowing there had to be a better way. This led me to the VWRCryoPro Liquid Dewars, L Series L-20 L-20 Liquid Dewar.

I needed a reliable, relatively compact, and easy-to-use dewar for field research involving the collection and preservation of environmental samples in remote locations. The L-20 Liquid Dewar’s 21-liter capacity seemed like a sweet spot between portability and sufficient storage. I was tired of lugging around larger, less manageable options.

The VWRCryoPro L-20 Liquid Dewar arrived well-packaged. My initial impression was solid construction; the stainless-steel exterior felt robust and the overall design appeared functional. The weight, even empty, suggested a substantial build.

I considered other dewars, including those from Worthington Industries and Taylor-Wharton. However, the VWR offering struck a balance between price and specified performance that the others didn’t quite meet. Ultimately, the stated evaporation rate and overall size convinced me to choose the CryoPro.

Initially, I was cautiously optimistic. The price point gave me pause, but I hoped the performance would justify the investment. Let’s see if it lives up to the hype.

Real-World Testing: Putting VWRCryoPro Liquid Dewars, L Series L-20 L-20 Liquid Dewar to the Test

First Use Experience

My first real test involved a field trip to collect soil samples in a remote alpine region. The goal was to flash-freeze the samples in liquid nitrogen immediately after collection to preserve microbial communities. The L-20 Liquid Dewar went along for the ride.

The dewar performed admirably, maintaining the liquid nitrogen level throughout the day despite fluctuating ambient temperatures and rough handling during transport. The ease of dispensing liquid nitrogen, even with gloves on, was a major plus. There were no leaks or unexpected pressure buildup.

It did take some practice to get the pouring rate correct, but after a few controlled spills, I became proficient. A minor issue was the condensation that formed on the exterior of the dewar in humid conditions, which I expected.

Extended Use & Reliability

After several months of regular use, the VWRCryoPro Liquid Dewars, L Series L-20 L-20 Liquid Dewar continues to perform reliably. The stainless-steel exterior has proven to be durable. It’s resisted dents and scratches despite being transported in the back of a truck on rough roads.

Cleaning is straightforward; a simple wipe-down is usually sufficient. I’ve noticed no significant degradation in performance or increase in evaporation rate over time. Regular inspection of the lid and neck is necessary to ensure proper sealing.

Compared to previous methods of using smaller, less insulated containers, the CryoPro is a game-changer. I’m seeing significantly longer holding times and reduced liquid nitrogen loss. It exceeds my expectations.

Breaking Down the Features of VWRCryoPro Liquid Dewars, L Series L-20 L-20 Liquid Dewar

Specifications

• Description: L-20 Liquid Dewar. This indicates its primary function and model within the L Series.

• Static Evaporation Rate: 0.18 L/Day. This specification is crucial, indicating the daily loss of liquid nitrogen due to evaporation. Lower is better, translating to longer holding times.

• Liquid Nitrogen Capacity: 21 L. This determines the total volume of liquid nitrogen that the dewar can hold. A larger capacity allows for extended use before refilling.

• Weight Empty: 9 kg (19.8 lbs). This impacts portability. A lighter dewar is easier to transport.

• Weight Full: 26 kg (57.3 lbs). This is the total weight when filled to capacity with liquid nitrogen. Consider this when assessing transport requirements.

• Neck Diameter: 5.1 cm (2 in). This affects the ease of access for filling and dispensing. A wider neck can simplify these processes.

• Overall Height x Outside Diameter: 62.7 x 36.8 cm (24 ¹¹/₁₆ x 14 ¹/₂ in). These dimensions are important for storage and transport considerations. Knowing the exact size is key for fitting it into vehicles or storage spaces.

These specifications are vital because they directly relate to the dewar’s utility in the field. The low evaporation rate, combined with the reasonable capacity, makes it suitable for multi-day expeditions.

Performance & Functionality

The VWRCryoPro Liquid Dewars, L Series L-20 L-20 Liquid Dewar excels at maintaining extremely low temperatures for extended periods. Its primary strength lies in its exceptional insulation, which minimizes liquid nitrogen loss. It performs its core function reliably.

A minor weakness is the lack of integrated dispensing mechanisms. Pouring requires careful handling to avoid spills. It meets expectations in terms of holding time and temperature stability.

Design & Ergonomics

The CryoPro L-20 features a robust stainless-steel construction, offering excellent durability. The dewar’s weight, while noticeable, is manageable. The rounded design minimizes sharp edges.

The design is functional, but not particularly ergonomic. There is no dedicated handle for pouring. This may require users to be extra cautious and/or purchase aftermarket add-ons. There is a minor learning curve associated with pouring, but it’s manageable.

Durability & Maintenance

The stainless-steel construction suggests a long lifespan under normal operating conditions. Accidental drops could potentially damage the dewar. Regular cleaning with a damp cloth is generally sufficient.

The dewar appears to be relatively easy to maintain. Replacement parts are readily available from VWR. Long-term reliability seems promising.

Accessories and Customization Options

The VWRCryoPro Liquid Dewars, L Series L-20 L-20 Liquid Dewar comes with a basic vented stopper. VWR offers accessories such as a phase separator and a stainless-steel transfer hose. These enhance dispensing safety and efficiency.

I am not aware of significant customization options. Its compatibility with third-party accessories is limited, as it is a relatively specialized piece of equipment. However, the accessory options offered by VWR do provide a means to enhance functionality.

Pros and Cons of VWRCryoPro Liquid Dewars, L Series L-20 L-20 Liquid Dewar

Who Should Buy VWRCryoPro Liquid Dewars, L Series L-20 L-20 Liquid Dewar?

• Perfect for: Researchers, scientists, and technicians who require a reliable and portable dewar for storing and transporting liquid nitrogen in the field or laboratory. Also suitable for cryobiologists preserving biological samples, or engineers using liquid nitrogen for cooling applications.
• Who should skip this product? Those who only need to handle very small volumes of liquid nitrogen or who have access to stationary, larger-capacity storage systems.
• Must-have accessories or modifications? The stainless steel transfer hose and phase separator significantly improve dispensing safety and efficiency and should be considered essential for most users.

Conclusion on VWRCryoPro Liquid Dewars, L Series L-20 L-20 Liquid Dewar

The VWRCryoPro Liquid Dewars, L Series L-20 L-20 Liquid Dewar is a reliable and well-built dewar that delivers on its promise of efficient liquid nitrogen storage. The price is justified by its performance, durability, and the peace of mind it provides when handling extremely cold materials.

I would personally recommend it to anyone needing a portable and dependable liquid nitrogen storage solution. Its robust construction, low evaporation rate, and manageable size make it a valuable tool for various applications. If you’re tired of subpar dewars and liquid nitrogen loss, it is time to make the investment.