Let’s Dive into VWR Vwr Label Cryo 15-50ml Wh Cs20 VWR-C21
The VWR Vwr Label Cryo 15-50ml Wh Cs20 VWR-C21 is a seemingly simple, yet crucial, product for anyone working in a laboratory environment where sample preservation is paramount. These white, 19mm diameter cryo labels, manufactured by Advantech Manufacturing, are designed specifically for 15-50ml tubes and are built to withstand extreme temperatures, ranging from -196°C to 121°C. They promise to stay adhered and legible, even when submerged in liquid nitrogen or stored in ultra-low freezers.
My journey to discovering these labels stemmed from years of frustration with standard labels that peeled, faded, or became brittle in cold storage. I needed a reliable labeling solution for biological samples I was storing long-term, without compromising the integrity of the identification. The prospect of losing crucial research data due to label failure was a constant anxiety.
The VWR Vwr Label Cryo 15-50ml Wh Cs20 VWR-C21 comes in a case of 20 sheets, with 108 dots per sheet, totaling 2160 individual labels. Unboxing them, I immediately noticed the quality of the laser sheets and the crisp, clean white finish of the labels. They felt substantial and well-made, which immediately gave me a sense of confidence.
I had previously used standard lab markers and generic adhesive labels, as well as “cryo-safe” labels from other manufacturers. But the standard labels always failed in extreme cold, and the alternative cryo labels were often expensive and still prone to peeling. I chose the VWR Vwr Label Cryo 15-50ml Wh Cs20 VWR-C21 due to VWR’s reputation for quality lab supplies and the specific temperature range advertised.
My first impression was cautiously optimistic. The labels looked and felt promising, but the real test would be their performance in the field, or rather, in the freezer. The price point of $125.99 felt like a significant investment, so I was hoping they would deliver on their promises.
Real-World Testing: Putting VWR Vwr Label Cryo 15-50ml Wh Cs20 VWR-C21 to the Test
First Use Experience
My initial test involved labeling a batch of 15ml conical tubes containing bacterial cultures destined for long-term storage in liquid nitrogen (-196°C). I printed the sample names and dates onto the labels using a laser printer, which adhered the toner beautifully to the label surface. Applying the labels to the tubes was straightforward, and the adhesive felt strong and secure.
The tubes were then submerged in liquid nitrogen for a period of 48 hours, simulating worst-case storage conditions. Upon removal, I was relieved to find that the labels were perfectly intact and the printed information remained crisp and legible. There were no signs of peeling, cracking, or fading, even after the extreme temperature shock.
The ease of use was remarkable – I didn’t need any special tools or techniques to apply the labels effectively. The only “issue” was remembering to use a laser printer for best results, as inkjet ink might smear under those conditions.
Extended Use & Reliability
After several weeks of use, the VWR Vwr Label Cryo 15-50ml Wh Cs20 VWR-C21 labels have consistently performed flawlessly. I’ve now used them on a variety of samples, including DNA extracts, cell lysates, and protein solutions, all stored at -80°C and -196°C.
There have been absolutely no signs of wear and tear, peeling, or degradation of the labels, even after repeated freeze-thaw cycles. The adhesive remains strong and the print quality remains excellent. Cleaning is also not a problem, and accidental spills of ethanol or isopropanol wipe off easily without damaging the label or print.
Compared to my previous experiences with inferior labels, the VWR Vwr Label Cryo 15-50ml Wh Cs20 VWR-C21 far exceeds expectations. I no longer worry about misidentifying samples or losing valuable data due to label failure. They are a reliable and trustworthy solution for long-term cryopreservation.
Breaking Down the Features of VWR Vwr Label Cryo 15-50ml Wh Cs20 VWR-C21
Specifications
The VWR Vwr Label Cryo 15-50ml Wh Cs20 VWR-C21 boasts several key specifications that contribute to its exceptional performance:
- Manufacturer: Advantech Manufacturing. This company has a reputation for quality, which provides reassurance.
- Color: White. Provides excellent contrast for printed or handwritten information.
- Available Quantity Options: Case (20 sheets). Economical for labs with high labeling needs.
- Diameter: 19 mm. Perfect size for labeling 15-50ml tubes without excessive overlap.
- Temperature Range: -196°C to 121°C. This is the most crucial specification, ensuring label integrity in liquid nitrogen and autoclaves.
- Format: Laser Sheet. Optimized for laser printing, guaranteeing durable and smudge-proof labels.
These specifications are paramount because they directly impact the longevity and readability of the labels under harsh conditions. The wide temperature range is especially important for researchers and technicians who require reliable identification of samples stored in extreme cold.
Performance & Functionality
The VWR Vwr Label Cryo 15-50ml Wh Cs20 VWR-C21 excels in its primary function: providing a durable and legible labeling solution for cryopreserved samples. The labels adhere strongly to tubes, even when frozen and thawed repeatedly.
The labels also maintain their integrity and readability even when exposed to common lab solvents like ethanol and isopropanol. A weakness might be that they are not designed for inkjet printers so this is an important consideration. Overall, they meet and exceed expectations for cryo labels.
Design & Ergonomics
The design of the VWR Vwr Label Cryo 15-50ml Wh Cs20 VWR-C21 is simple and functional. The white color provides excellent contrast for printed or handwritten information, and the circular shape fits neatly on most 15-50ml tubes.
The adhesive is strong yet not overly aggressive, allowing for easy repositioning immediately after application if needed. There is no learning curve associated with using these labels; they are straightforward and user-friendly.
Durability & Maintenance
Based on my experience, these labels are exceptionally durable. The materials are clearly chosen for their resistance to extreme temperatures and chemical exposure.
They require virtually no maintenance. Just apply them properly, and they will last for the duration of the sample’s storage.
Accessories and Customization Options
The VWR Vwr Label Cryo 15-50ml Wh Cs20 VWR-C21 does not come with accessories. However, the labels are compatible with any standard laser printer.
They can be easily customized with sample names, dates, barcodes, or any other relevant information. The key is to use a laser printer to ensure the print is permanent and resistant to smudging.
Pros and Cons of VWR Vwr Label Cryo 15-50ml Wh Cs20 VWR-C21
Pros
- Exceptional temperature resistance: Survives liquid nitrogen and ultra-low freezer conditions without peeling or fading.
- Strong adhesive: Stays firmly attached to tubes, even after repeated freeze-thaw cycles.
- Excellent print quality with laser printers: Allows for crisp, clear, and permanent labeling.
- Solvent resistant: Withstands exposure to common lab solvents like ethanol and isopropanol.
- Easy to use: Simple application with no special tools or techniques required.
Cons
- Requires a laser printer: Inkjet printing may result in smudging under extreme conditions.
- Price: The price point of $125.99 per case may be a deterrent for some users.
Who Should Buy VWR Vwr Label Cryo 15-50ml Wh Cs20 VWR-C21?
The VWR Vwr Label Cryo 15-50ml Wh Cs20 VWR-C21 is perfect for: Researchers, laboratory technicians, and anyone who needs to store biological samples at extremely low temperatures for extended periods. They are ideal for pharmaceutical companies, biotech firms, academic research labs, and clinical diagnostic facilities.
Who should skip this product? Individuals who only need to label items for short-term storage at room temperature or in a standard refrigerator. Also, labs without access to a laser printer may find these labels unsuitable.
Must-have accessories or modifications? A good quality laser printer is essential for optimal performance.
Conclusion on VWR Vwr Label Cryo 15-50ml Wh Cs20 VWR-C21
In summary, the VWR Vwr Label Cryo 15-50ml Wh Cs20 VWR-C21 is a reliable and high-performing labeling solution for cryopreserved samples. Their ability to withstand extreme temperatures and chemical exposure makes them an invaluable tool for any laboratory.
The price is justified by the quality and reliability of the labels. Losing a valuable sample due to label failure is far more costly than investing in a dependable labeling solution.
I would wholeheartedly recommend the VWR Vwr Label Cryo 15-50ml Wh Cs20 VWR-C21 to anyone who needs a trustworthy and durable labeling solution for cryopreservation. Invest in these labels and safeguard your valuable research samples – you won’t regret it!