The Real Deal Behind the Kimble/Kontes Disposable Plain Centrifuge Tubes, Kimble 73785 15 Tubes, Case of 125
The Kimble/Kontes Disposable Plain Centrifuge Tubes, Kimble 73785 15 Tubes, Case of 125 are designed for reliable sample processing in laboratory settings. These 15mL borosilicate glass tubes, supplied in a case of 125, offer a balance of quality and disposability. They feature a conical bottom, ideal for concentrating samples during centrifugation, making them a staple in many scientific disciplines.
My need for these tubes stemmed from a recent expansion of our in-house water quality testing capabilities. We were processing a higher volume of samples, demanding efficient and reliable centrifugation for sediment analysis. I had grown frustrated with the inconsistent quality of cheaper tubes that often cracked or leaked under pressure.
Upon receiving the Kimble/Kontes Disposable Plain Centrifuge Tubes, Kimble 73785 15 Tubes, Case of 125, I was immediately impressed by the uniform thickness of the glass and the clean, consistent conical shape. The tubes felt robust, inspiring confidence in their ability to withstand the forces of centrifugation. The packaging, shrink-wrapped trays, ensured the tubes arrived undamaged and ready for use.
Compared to generic centrifuge tubes I’d previously used, these Kimble/Kontes tubes stood out significantly in terms of material quality and manufacturing precision. I had considered re-usable glass tubes, but the time and resources needed to properly clean and sterilize them between uses didn’t make sense for our high-throughput requirements. Disposable was the only economically viable option. I chose these specifically because of Kimble/Kontes’s reputation for quality glassware.
My first impression was one of relief. Finally, centrifuge tubes that felt substantial and dependable. The promise of consistency and reduced sample loss was immediately exciting.
Real-World Testing: Putting Kimble/Kontes Disposable Plain Centrifuge Tubes, Kimble 73785 15 Tubes, Case of 125 to the Test
First Use Experience
My first use of the Kimble/Kontes Disposable Plain Centrifuge Tubes, Kimble 73785 15 Tubes, Case of 125 was in a series of water samples collected from a local river. I was interested in determining the total suspended solids (TSS) content. We processed approximately 30 samples that day.
The tubes performed flawlessly during the initial centrifugation runs. They held up perfectly even at the specified maximum RCF (Relative Centrifugal Force) of 2980 g. I noticed that the conical shape effectively concentrated the sediment at the bottom, making it easier to decant the supernatant without disturbing the settled solids.
The tubes were easy to label with a standard laboratory marker, and the glass surface provided good adhesion. I did find it essential to use the correct size caps (15-415) to prevent any leakage, though the caps are sold separately. Thankfully, I ordered a supply of Kimble/Kontes caps at the same time.
Extended Use & Reliability
After several months of consistent use, processing hundreds of water and soil samples, the Kimble/Kontes Disposable Plain Centrifuge Tubes, Kimble 73785 15 Tubes, Case of 125 have proven to be exceptionally reliable. The tubes show no signs of degradation or weakening with prolonged use. There have been no failures due to tube breakage during centrifugation.
Maintaining these tubes is straightforward, primarily because they are disposable. There’s no need for cleaning or sterilization protocols; simply discard them after use, reducing the risk of cross-contamination. This has streamlined our workflow and improved our turnaround time for sample analysis. Compared to the fragile, off-brand tubes I used previously, the Kimble/Kontes tubes have drastically reduced the number of re-runs due to broken or leaking tubes. They have exceeded expectations, offering a reliable and consistent performance that is critical for accurate scientific analysis.
Breaking Down the Features of Kimble/Kontes Disposable Plain Centrifuge Tubes, Kimble 73785 15 Tubes, Case of 125
Specifications
- Volume: 15 mL
- Dimensions: 17 mm diameter x 126 mm length
- Material: Borosilicate Glass (meets Type I, A, or B glass requirements per ASTM E438)
- Cap Size: 15-415 (caps sold separately)
- Maximum RCF: 2980 g
- Packaging: Case of 125 tubes in shrink-wrapped trays
- Kimble No.: 73785 15
The borosilicate glass construction ensures chemical resistance, vital for handling a wide range of samples without degradation or contamination. The 15mL volume is ideal for many standard laboratory procedures requiring moderate sample sizes. The maximum RCF rating of 2980 g is crucial for ensuring the tubes can withstand high-speed centrifugation without breaking, providing reliable sample separation.
Performance & Functionality
The Kimble/Kontes Disposable Plain Centrifuge Tubes, Kimble 73785 15 Tubes, Case of 125 excel in their primary function: reliably separating components of a liquid sample through centrifugation. The conical bottom design effectively concentrates solids, making it easy to remove the liquid supernatant. These tubes maintain their integrity under high G-forces and exhibit very little sample loss due to tube failure.
The primary strength lies in their consistent performance and durability. The fact that they are disposable is also a major advantage, especially for biological samples. The weakness, if any, is the separate purchase of caps. It would be ideal to have appropriately-sized caps included.
The tubes meet and exceed expectations in terms of performance and reliability. Their consistent construction and ability to withstand high RCF values ensure reliable and accurate results every time.
Design & Ergonomics
The build quality is exceptional, with uniformly thick borosilicate glass that feels robust and resistant to cracking. The conical bottom is precisely formed, contributing to effective sample concentration. The dimensions are optimal for standard centrifuge rotors, ensuring compatibility with most laboratory equipment.
The tubes are user-friendly, with a smooth glass surface that is easy to label and handle. There is no learning curve involved; they function exactly as expected for standard centrifuge tubes.
Durability & Maintenance
The borosilicate glass construction ensures excellent durability against chemical corrosion and physical stress. Although designed for single-use, the tubes are robust enough to handle repeated handling without significant risk of damage before use.
Maintenance is non-existent due to their disposable nature. This eliminates the need for cleaning, sterilization, and associated labor costs.
Accessories and Customization Options
The primary accessory for the Kimble/Kontes Disposable Plain Centrifuge Tubes, Kimble 73785 15 Tubes, Case of 125 is the matching 15-415 phenolic screw caps with PTFE-faced rubber liners. These caps provide a secure, leak-proof seal, crucial for preventing sample loss and contamination during centrifugation and storage.
While there aren’t many customization options for disposable centrifuge tubes, compatibility with standard labeling systems and centrifuge rotors enhances their versatility. The Kimble/Kontes tubes are designed to fit most standard 15mL centrifuge rotors, ensuring seamless integration into existing laboratory workflows.
Pros and Cons of Kimble/Kontes Disposable Plain Centrifuge Tubes, Kimble 73785 15 Tubes, Case of 125
Pros
- Exceptional Durability: Made from high-quality borosilicate glass, these tubes withstand high G-forces without cracking.
- Consistent Performance: Uniform dimensions and conical shape ensure reliable sample concentration and separation.
- Disposable Convenience: Eliminates the need for cleaning and sterilization, saving time and reducing the risk of contamination.
- Chemical Resistance: Borosilicate glass resists corrosion from a wide range of chemicals, ensuring sample integrity.
- Industry Reputation: Manufactured by Kimble/Kontes, a trusted name in laboratory glassware, guaranteeing quality and reliability.
Cons
- Caps Sold Separately: The required 15-415 caps must be purchased separately, increasing the overall cost.
- Glass Breakage Potential: While durable, glass tubes are inherently more susceptible to breakage than plastic alternatives, requiring careful handling.
Who Should Buy Kimble/Kontes Disposable Plain Centrifuge Tubes, Kimble 73785 15 Tubes, Case of 125?
These centrifuge tubes are perfect for: laboratory technicians, environmental scientists, water quality specialists, and researchers who require reliable and consistent sample processing. They’re also suitable for medical professionals and clinical laboratories that need disposable tubes to prevent contamination.
Those who might want to skip this product are individuals working with extremely small sample volumes where microcentrifuge tubes would be more appropriate, or those seeking the absolute lowest cost option, where plastic tubes might be preferred. However, if accuracy, reliability, and sample integrity are paramount, the Kimble/Kontes Disposable Plain Centrifuge Tubes, Kimble 73785 15 Tubes, Case of 125 are the superior choice.
A must-have accessory is the Kimble/Kontes 15-415 phenolic screw caps with PTFE-faced rubber liners. Ensure you order these simultaneously to prevent leakage and contamination.
Conclusion on Kimble/Kontes Disposable Plain Centrifuge Tubes, Kimble 73785 15 Tubes, Case of 125
The Kimble/Kontes Disposable Plain Centrifuge Tubes, Kimble 73785 15 Tubes, Case of 125 represent a solid investment for any laboratory requiring reliable and consistent sample processing. The price of $189.99 for a case of 125 is justified by the superior quality of the borosilicate glass, the consistent manufacturing, and the convenience of disposability. The elimination of cleaning and sterilization steps, along with the reduced risk of sample loss due to tube failure, translates to significant time and cost savings in the long run.
I would wholeheartedly recommend these centrifuge tubes to any professional or researcher who prioritizes accuracy, reliability, and efficiency in their work. They are an essential tool for a wide range of scientific applications. If you are tired of dealing with unreliable, poorly-made centrifuge tubes, invest in the Kimble/Kontes Disposable Plain Centrifuge Tubes, Kimble 73785 15 Tubes, Case of 125 and experience the difference that quality makes. Order your case today and elevate your lab’s performance!