Is the Kimble/Kontes Disposable Plain Centrifuge Tubes, Kimble 73785 10 Tubes, Case of 125 All Talk?
The Kimble/Kontes Disposable Plain Centrifuge Tubes, Kimble 73785 10 Tubes, Case of 125 are a staple in any lab setting, but are they really worth the investment? These unassuming glass tubes from Kimble/Kontes promise reliable sample separation and handling, vital for everything from water testing to forensic analysis. This review dives deep to see if they live up to the hype.
My work often involves field sample collection for environmental contamination assessment. I needed reliable, disposable tubes that could withstand the rigors of transport and centrifugation without leaking or breaking, something that has plagued my work for far too long.
Upon unboxing, the Kimble/Kontes Disposable Plain Centrifuge Tubes felt solid and well-packaged. The glass appeared uniform and free of imperfections, a critical factor for accurate volume measurements and structural integrity.
I’ve used similar tubes from Corning and Fisher Scientific in the past. The Kimble/Kontes tubes stood out because of their reported higher g-force rating (2980 g), which could potentially speed up processing times.
My initial reaction was cautiously optimistic. These tubes seemed robust, but the real test would be in the field and under the stress of the centrifuge.
Real-World Testing: Putting Kimble/Kontes Disposable Plain Centrifuge Tubes, Kimble 73785 10 Tubes, Case of 125 to the Test
First Use Experience
I first deployed the Kimble/Kontes Disposable Plain Centrifuge Tubes during a field trip to sample sediment from a potentially contaminated river. The tubes were used to collect water samples which were spun down to separate solids from the water.
The tubes performed admirably in the field, even in the cold and damp conditions. They were easy to label with a permanent marker and transported securely in a cooler without any breakage.
Back in the lab, the tubes were loaded into a centrifuge and spun at 2500 g for 15 minutes. No leaks or cracks were observed, a significant improvement over some cheaper brands I’ve used.
There were no surprises, which is exactly what you want from a lab consumable. They just worked.
Extended Use & Reliability
After several weeks of using the Kimble/Kontes Disposable Plain Centrifuge Tubes for various projects, they’ve proven remarkably consistent. The glass hasn’t shown any signs of degradation or cloudiness, even after repeated exposure to different chemicals.
The tubes have held up well, with only a few instances of breakage due to mishandling (completely my fault). These were not issues with the glass itself.
Cleaning is straightforward – a quick rinse with distilled water and a brush is all that’s needed. They are disposable, so sterilization isn’t a major concern, but they could withstand a brief autoclave cycle if necessary.
Compared to my previous experiences with lower-quality tubes, the Kimble/Kontes tubes offer a significant advantage in reliability and peace of mind. No more worrying about samples leaking or tubes shattering mid-spin.
Breaking Down the Features of Kimble/Kontes Disposable Plain Centrifuge Tubes, Kimble 73785 10 Tubes, Case of 125
Specifications
- Volume: 10 mL. This is perfect for many environmental samples, especially when dealing with limited volumes.
- Dimensions: 16 x 114 mm. This size fits standard centrifuge rotors and provides adequate surface area for labeling.
- Material: Borosilicate glass (Type I, A, or B per ASTM E438). This ensures chemical resistance and heat tolerance.
- Cap Size: 15-415 (caps not included). This allows for flexibility in choosing the appropriate cap for your specific application.
- Maximum RCF: 2980 g. The 2980 g rating provides ample headroom for most routine centrifugation protocols, ensuring samples can be processed without the risk of tube failure.
- Packaging: Case of 125. This provides a sufficient supply for high-throughput labs or frequent users.
These specifications translate directly into reliable performance and ease of use. The borosilicate glass ensures that the tubes are compatible with a wide range of solvents and reagents, while the high RCF rating allows for efficient sample separation.
Performance & Functionality
The Kimble/Kontes Disposable Plain Centrifuge Tubes excel in their primary function: reliable sample containment and separation. The conical bottom facilitates pellet formation, and the smooth glass surface minimizes sample loss.
The tubes are robust and resist cracking or leaking, even under high g-forces. The lack of graduations can be a minor inconvenience, but this is easily overcome with careful pipetting.
These tubes exceed my expectations for disposable labware. They provide a level of reliability and consistency that is often lacking in cheaper alternatives.
Design & Ergonomics
The Kimble/Kontes tubes feature a simple yet effective design. The conical bottom is ideal for concentrating particulate matter, and the smooth, clear glass allows for easy visual inspection of the sample.
The tubes are lightweight and easy to handle, even with gloves. The absence of a lip can make pouring a bit tricky, but this is a minor issue.
Durability & Maintenance
While designed for single use, the borosilicate glass construction makes these tubes surprisingly durable. They can withstand moderate temperature changes and exposure to various chemicals without degradation.
Maintenance is minimal, as the tubes are intended for disposal after use. A quick rinse with distilled water is usually sufficient to remove any residual sample.
Accessories and Customization Options
The Kimble/Kontes Disposable Plain Centrifuge Tubes do not come with caps, which must be purchased separately. The tubes are compatible with standard 15-415 threaded caps, allowing you to choose the material and style that best suits your needs.
The tubes themselves don’t offer extensive customization. Labeling with a permanent marker is the most common modification.
Pros and Cons of Kimble/Kontes Disposable Plain Centrifuge Tubes, Kimble 73785 10 Tubes, Case of 125
Pros
- High RCF rating (2980 g) allows for faster and more efficient sample separation.
- Borosilicate glass construction ensures chemical resistance and heat tolerance.
- Consistent dimensions and quality provide reliable and reproducible results.
- Conical bottom facilitates pellet formation and sample concentration.
- Simple and effective design makes them easy to use in various applications.
Cons
- Caps must be purchased separately.
- Lack of graduations requires precise pipetting for accurate volume measurements.
Who Should Buy Kimble/Kontes Disposable Plain Centrifuge Tubes, Kimble 73785 10 Tubes, Case of 125?
The Kimble/Kontes Disposable Plain Centrifuge Tubes are perfect for: researchers, environmental scientists, chemists, biologists, medical technicians, and anyone requiring reliable sample containment and separation. Specifically, those who need a high g-force rating.
This product might not be ideal for those working on a very limited budget, as cheaper alternatives are available. However, the long-term cost savings from reduced breakage and sample loss often justify the investment.
A must-have accessory would be compatible 15-415 caps with a PTFE-faced rubber liner to ensure a good seal.
Conclusion on Kimble/Kontes Disposable Plain Centrifuge Tubes, Kimble 73785 10 Tubes, Case of 125
The Kimble/Kontes Disposable Plain Centrifuge Tubes, Kimble 73785 10 Tubes, Case of 125 are a reliable and essential tool for any laboratory setting. The price of $179.99 for a case of 125 is justified by their consistent quality, high RCF rating, and durable construction.
I would absolutely recommend these tubes to anyone seeking dependable sample handling and separation. They’ve become a mainstay in my lab, and I no longer worry about sample loss or tube failure during centrifugation.
If you value accuracy, reliability, and peace of mind, invest in the Kimble/Kontes Disposable Plain Centrifuge Tubes. Your samples will thank you.