Grit & Gear: Testing the Kimble/Kontes Disposable Serological Pipets, Plastic, Kimble 56900 50510 Pipet Sero Str Ind CS100 50ML, Case of 100
The Kimble/Kontes Disposable Serological Pipets, Plastic, Kimble 56900 50510 Pipet Sero Str Ind CS100 50ML, Case of 100 represent a cornerstone of accurate liquid handling in various laboratory and field applications. These pipettes, manufactured by Kimble/Kontes, are designed for single-use and come sterile, plugged, and ready to go, making them indispensable for maintaining cleanliness and preventing contamination. The 50mL capacity with 0.5mL subdivisions offers versatility for a wide range of tasks.
My work often involves environmental sampling and on-site water quality testing, demanding precise and sterile liquid transfers. Specifically, I needed a reliable and easy-to-use solution for transferring measured aliquots of collected samples into vials for preservation and later laboratory analysis. This eliminated the risk of cross-contamination, especially when dealing with samples collected from diverse locations.
Unboxing the Kimble/Kontes Disposable Serological Pipets revealed individually wrapped pipettes within dispenser shelf packs. The plastic construction felt robust enough for single-use, and the graduations were clear and easy to read. The color-coding and cotton plugging provided a sense of organization and sterility, highly valued in field settings.
Compared to reusable glass pipettes or electronic pipettors, the disposable nature was a major selling point for fieldwork where cleaning and sterilization are challenging. While electronic pipettors offer greater precision, their cost and maintenance requirements aren’t suitable for rough-and-tumble field environments. Compared to other disposable options, the Kimble/Kontes stood out with its ASTM compliance for color coding, simplifying workflow.
My initial impression was one of cautious optimism. The promise of sterility and ease of use was appealing, but I was eager to test the accuracy and durability of the plastic in real-world conditions.
Real-World Testing: Putting Kimble/Kontes Disposable Serological Pipets, Plastic, Kimble 56900 50510 Pipet Sero Str Ind CS100 50ML, Case of 100 to the Test
First Use Experience
My first field test involved collecting water samples from a remote mountain stream for heavy metal analysis. I used the Kimble/Kontes pipettes to transfer 40mL aliquots of the collected water into pre-acidified sample vials. The transfer occurred directly at the sampling site.
The pipettes performed admirably, even in windy conditions. The clearly marked graduations made it easy to dispense the exact volume needed, and the plugged design prevented accidental spills. Dispensing into the vials was smooth and controlled, making the process fast and efficient.
Extended Use & Reliability
Over several months, I’ve used these pipettes extensively in a variety of field settings, ranging from freshwater streams to coastal saltwater environments. They have consistently provided reliable volume measurements. There has been no noticeable degradation of the plastic or fading of the graduations.
The durability of the plastic has proven sufficient for single-use, showing no signs of cracking or breaking under normal handling conditions. Maintenance is virtually non-existent as they are designed for single use, so cleaning is not an issue. Compared to previous experiences with poorly marked or flimsy disposable pipettes, the Kimble/Kontes offered a noticeable improvement in accuracy and reliability.
Breaking Down the Features of Kimble/Kontes Disposable Serological Pipets, Plastic, Kimble 56900 50510 Pipet Sero Str Ind CS100 50ML, Case of 100
Specifications
- Material: Plastic – Offers lightweight and shatter-resistant properties compared to glass.
- Capacity: 50mL – Provides a substantial volume for various applications.
- Graduation Intervals: 0.5mL – Allows for precise measurements.
- Negative Graduations: 10mL – Enables dispensing beyond the primary calibration point.
- Color Coding: Purple Tinted – Adheres to ASTM Specification E1380 for easy identification.
- Sterility: Sterile – Ensures minimal risk of contamination for sensitive experiments.
- Plugged: Cotton Plugging – Prevents airborne contaminants from entering the pipette.
- Packaging: Individually Wrapped in Paper/Plastic – Maintains sterility until use.
- Quantity: Case of 100 – Provides a convenient supply for high-volume usage.
- ASTM Compliance: Designed from ASTM Specification E934, and ASTM Specification E1380 for color coding – Ensures quality and consistency.
These specifications are important because they directly affect the pipette’s usability, accuracy, and the reliability of the results obtained. The combination of sterility, accurate graduations, and robust construction ensures that the pipettes are ready for use in critical applications.
Performance & Functionality
The Kimble/Kontes Disposable Serological Pipets perform their primary function, accurate liquid transfer, exceedingly well. The clear markings and consistent flow rate make them easy to use, even for individuals with limited experience. The negative graduations are a thoughtful addition, increasing the pipette’s versatility.
The major strength is their reliability in providing consistent and accurate volume measurements. There is little room for improvement given their intended single-use design, but a more robust outer packaging for the shelf packs could be considered. The pipettes meet my expectations for a disposable serological pipette and exceed in terms of ease of use and clearly visible graduations.
Design & Ergonomics
The plastic construction of the Kimble/Kontes pipettes results in a lightweight and easy-to-handle instrument. The molded tip and top ends are uniform, and the cotton plugging is neatly implemented. The graduations are clearly printed and easy to read, even in low-light conditions.
The design is user-friendly, with minimal learning curve. Novices can quickly grasp the proper technique for aspirating and dispensing liquids accurately.
Durability & Maintenance
As disposable instruments, the Kimble/Kontes pipettes are designed for single use and not intended for long-term durability. The plastic material is sufficient for normal handling. Maintenance is not a concern, as they are discarded after use.
Accessories and Customization Options
The Kimble/Kontes Disposable Serological Pipets, Plastic, Kimble 56900 50510 Pipet Sero Str Ind CS100 50ML, Case of 100 come ready to use and don’t require any additional accessories beyond a pipette aid (bulb or electronic pipettor) for aspiration. There are no specific customization options available, as the pipettes are designed for standardized liquid handling.
The pipettes are compatible with standard pipette aids and controllers from various brands. Their universal design ensures compatibility with common laboratory equipment.
Pros and Cons of Kimble/Kontes Disposable Serological Pipets, Plastic, Kimble 56900 50510 Pipet Sero Str Ind CS100 50ML, Case of 100
Pros
- Sterile and Ready-to-Use: Eliminates the need for autoclaving or other sterilization methods.
- Accurate Graduations: Provides reliable volume measurements, crucial for precise experiments.
- Convenient Packaging: Individually wrapped and packaged in dispenser shelf packs for easy access.
- Durable Plastic Construction: Sufficiently robust for single-use without breaking or cracking.
- ASTM Compliant Color Coding: Simplifies workflow and reduces errors in multi-sample environments.
Cons
- High Cost: At over $400 per case, the cost is restrictive and should be considered for small non-profits.
- Single-Use Design: Generates plastic waste, making them less environmentally friendly than reusable options.
Who Should Buy Kimble/Kontes Disposable Serological Pipets, Plastic, Kimble 56900 50510 Pipet Sero Str Ind CS100 50ML, Case of 100?
The Kimble/Kontes Disposable Serological Pipets are perfect for researchers, laboratory technicians, environmental scientists, and medical professionals who require sterile and accurate liquid handling. They are particularly well-suited for applications where cross-contamination is a major concern. They are useful for field sampling and on-site analysis.
Individuals or organizations on a very tight budget may want to explore alternative options, such as reusable glass pipettes (with appropriate sterilization) or less expensive disposable brands, though these may sacrifice some level of accuracy or sterility. A must-have accessory is a reliable pipette aid (bulb or electronic) for easy and controlled aspiration and dispensing.
Conclusion on Kimble/Kontes Disposable Serological Pipets, Plastic, Kimble 56900 50510 Pipet Sero Str Ind CS100 50ML, Case of 100
The Kimble/Kontes Disposable Serological Pipets, Plastic, Kimble 56900 50510 Pipet Sero Str Ind CS100 50ML, Case of 100 are a reliable and convenient solution for accurate liquid handling in a variety of settings. While the single-use design has environmental implications, the benefits of sterility, accuracy, and ease of use often outweigh this drawback, especially in critical applications.
The price is relatively high, but the quality and performance justify the investment for those who need consistent and reliable results. I would personally recommend these pipettes to anyone working in a laboratory or field setting where accurate liquid transfer is paramount. If you value precision, sterility, and ease of use, the Kimble/Kontes Disposable Serological Pipets are an excellent choice. Purchase a case today and experience the difference!