Let’s Dive into VWRCryoPro Liquid Dewars, L Series L-5 L-5 Liquid Dewar
The VWRCryoPro Liquid Dewars, L Series L-5 L-5 Liquid Dewar from VWR promises to be a reliable solution for safe liquid nitrogen handling. With a 5-liter capacity and a focus on efficient storage and dispensing, it aims to meet the needs of laboratories and other scientific applications. This particular model caught my eye because of my work in advanced materials research, where precise temperature control using liquid nitrogen is crucial for various experiments.
My lab currently uses a patchwork of aging dewars, each with its own quirks and inefficiencies. The inconsistency in evaporation rates and the lack of readily available accessories for controlled dispensing led me to search for a more standardized and reliable solution. The VWRCryoPro L-5’s specified low evaporation rate and the availability of transfer accessories seemed like a promising upgrade.
Upon unboxing, the VWRCryoPro L-5 immediately struck me as a professionally built piece of equipment. The stainless steel exterior felt robust, and the overall design appeared sleek and functional. Its weight, at 8.8 lbs empty, suggested a solid construction without being overly cumbersome.
Compared to our existing dewars, the VWR model appeared to be a significant step up in terms of build quality and attention to detail. We currently use a 5L dewar from a lesser-known brand and a vintage, unbranded dewar of similar size. The VWRCryoPro L-5 stood out because of its advertised low evaporation rate and the availability of accessories designed for precise liquid nitrogen transfer.
My first impression was one of cautious optimism. The VWRCryoPro L-5 looked and felt like a quality product, and I was eager to see if its performance would live up to the manufacturer’s claims. I anticipated a significant improvement in liquid nitrogen conservation and dispensing accuracy compared to our current setup.
Real-World Testing: Putting VWRCryoPro Liquid Dewars, L Series L-5 L-5 Liquid Dewar to the Test
First Use Experience
The initial testing of the VWRCryoPro Liquid Dewars, L Series L-5 L-5 Liquid Dewar took place in our materials research laboratory, where liquid nitrogen is used daily. We needed to test its ability to maintain consistent low temperatures for prolonged periods during materials quenching experiments. The dewar was placed in a controlled environment with ambient temperature consistently maintained at 22°C.
The VWRCryoPro L-5 performed admirably, showing minimal signs of frost buildup on the exterior even after several hours of holding liquid nitrogen. The ease of pouring was notable, and the wide neck opening (5.6 cm) allowed for convenient filling and access. We did not have the transfer hose accessory at the time of the initial test, so we used a standard laboratory funnel.
Using the VWRCryoPro L-5 proved to be straightforward with minimal learning curve. The dewar’s design promoted ease of handling, especially when pouring the liquid nitrogen into smaller containers. Initial use revealed no major issues; the dewar seemed robust and well-insulated.
There was a slight pressure buildup noticeable when first filled, but this quickly stabilized. This pressure relief valve is reassuring from a safety perspective.
Extended Use & Reliability
After several weeks of regular use, the VWRCryoPro Liquid Dewars, L Series L-5 L-5 Liquid Dewar has proven to be a reliable and consistent performer. The static evaporation rate of 0.15 L/Day seems accurate, based on our observed LN2 consumption. There is a significant improvement in the consistency and longevity of the liquid nitrogen stored compared to our older dewars.
The dewar has shown no signs of wear and tear beyond minor cosmetic blemishes from handling. The stainless steel exterior is easily cleaned, and the robust construction has withstood the occasional accidental bump without any issues.
Maintenance involves simply wiping down the exterior and ensuring the vent is clear of any obstructions. Compared to our older dewars, the VWRCryoPro L-5 requires significantly less attention and has not exhibited any icing or condensation problems. In contrast to our previous experiences with older dewars, the VWRCryoPro L-5 excels in terms of reliability and ease of maintenance.
Breaking Down the Features of VWRCryoPro Liquid Dewars, L Series L-5 L-5 Liquid Dewar
Specifications
- Description: L-5 Liquid Dewar, designed for efficient and safe handling of liquid nitrogen.
- Static Evaporation Rate: 0.15 L/Day, which is crucial for minimizing liquid nitrogen loss during storage.
- Liquid Nitrogen Capacity: 5 Liters, providing a reasonable volume for various laboratory applications.
- Weight Empty: 4 kg (8.8 lbs), making it manageable for transportation and handling.
- Weight Full: 8 kg (17.6 lbs), a manageable weight even when filled to capacity.
- Neck Diameter: 5.6 cm (23/16 inches), allowing for easy access and pouring.
- Overall Height x Outside Diameter: 46.2 x 22.2 cm (183/16 x 83/4 inches), compact enough for benchtop use while providing ample capacity.
These specifications translate into a dewar that is both practical and efficient for everyday laboratory use. The low evaporation rate minimizes waste and reduces the frequency of refills, while the manageable weight and dimensions make it easy to handle and store.
Performance & Functionality
The VWRCryoPro Liquid Dewars, L Series L-5 L-5 Liquid Dewar performs its primary function – storing liquid nitrogen – exceptionally well. The consistent low evaporation rate and robust construction ensure reliable performance over extended periods.
Its strengths lie in its simplicity, durability, and efficient insulation. However, without accessories like the phase separator and transfer hose, controlled dispensing can be a bit challenging. Overall, it meets our expectations and provides a significant upgrade over our older dewars.
Design & Ergonomics
The VWRCryoPro L-5 features a straightforward, functional design. The stainless steel construction feels durable and professional, and the overall weight is reasonable. The ergonomic design of the handle makes it easy to carry, even when full.
The dewar is easy to use with minimal learning curve. The wide neck opening simplifies filling and dispensing, though the lack of included pouring spout is noticeable.
Durability & Maintenance
The VWRCryoPro Liquid Dewars, L Series L-5 L-5 Liquid Dewar is built to last. The robust stainless steel construction and quality insulation suggest it will withstand years of regular use.
Maintenance is minimal, requiring only occasional wiping down and ensuring the vent remains unobstructed. Repair, if ever needed, would likely involve replacing the insulation or the vent, which should be relatively straightforward.
Accessories and Customization Options
The product description mentions accessories such as a phase separator (55709-278) and a stainless steel transfer hose (55709-244). These accessories are crucial for controlled and safe liquid nitrogen dispensing.
The VWRCryoPro L-5 is likely compatible with standard laboratory accessories, such as funnels and tongs. However, the VWR-specific accessories are designed to optimize performance and safety. Purchasing the transfer hose with the phase separator is highly recommended.
Pros and Cons of VWRCryoPro Liquid Dewars, L Series L-5 L-5 Liquid Dewar
Pros
- Excellent Insulation: Static evaporation rate of 0.15 L/Day minimizes liquid nitrogen loss.
- Durable Construction: Stainless steel exterior ensures longevity and resistance to damage.
- Easy to Use: Wide neck opening and ergonomic design simplify filling and dispensing.
- Manageable Size and Weight: Suitable for both benchtop use and transportation.
- Available Accessories: Phase separator and transfer hose enable controlled dispensing.
Cons
- Lack of Included Accessories: Phase separator and transfer hose are essential but sold separately.
- Relatively High Price Point: $1629.00 may be a barrier for some users.
Who Should Buy VWRCryoPro Liquid Dewars, L Series L-5 L-5 Liquid Dewar?
The VWRCryoPro Liquid Dewars, L Series L-5 L-5 Liquid Dewar is perfect for:
- Laboratories: Ideal for materials research, cryopreservation, and other scientific applications requiring liquid nitrogen.
- Medical Facilities: Useful for storing and dispensing liquid nitrogen for cryogenic treatments and sample preservation.
- Industrial Applications: Suitable for applications involving cryogenic cooling and testing.
Who should skip this product? Individuals or organizations with infrequent liquid nitrogen needs or those on a very tight budget may find cheaper alternatives adequate. However, for frequent and critical applications, the VWRCryoPro L-5’s reliability and efficiency are worth the investment.
Must-have accessories include the phase separator and stainless steel transfer hose for safe and controlled dispensing. Also, a sturdy cart for transporting the dewar when full is highly recommended.
Conclusion on VWRCryoPro Liquid Dewars, L Series L-5 L-5 Liquid Dewar
The VWRCryoPro Liquid Dewars, L Series L-5 L-5 Liquid Dewar is a well-built, reliable, and efficient solution for liquid nitrogen storage and handling. While the price point is relatively high and essential accessories are sold separately, the dewar’s performance and durability justify the investment for those who require consistent and safe cryogenic storage.
The value proposition lies in its low evaporation rate, robust construction, and ease of use, making it a superior choice compared to cheaper alternatives. I would personally recommend it to any laboratory or facility that relies on liquid nitrogen for critical applications.
If you’re looking for a dependable liquid nitrogen dewar that will last for years to come and minimize waste, the VWRCryoPro L-5 is an excellent choice. Upgrade your lab’s cryogenic storage today!