Meet the VWR Stirring Elements, IKA Works 1132700 R 1355 Centrifugal Stirrer: First Thoughts
The VWR Stirring Elements, IKA Works 1132700 R 1355 Centrifugal Stirrer promises to be a workhorse in the lab, offering reliable mixing even in narrow-necked vessels. This piece of equipment is designed with practicality in mind, allowing users to perform crucial processes within the confines of smaller containers. The reputation of IKA Works for quality laboratory equipment also makes this particular stirrer an interesting tool.
My work in pharmaceutical research often requires me to mix solutions in flasks with narrow openings. Traditional overhead stirrers with propeller blades are simply too large to fit. I was searching for a stirrer that could not only fit into these vessels but also provide sufficient mixing for homogenous results, making the VWR Stirring Elements, IKA Works 1132700 R 1355 Centrifugal Stirrer an attractive option.
Upon unboxing, the stirrer felt robust and well-made. The stainless-steel construction gives it a professional, durable feel. The centrifugal design is interesting, as the blades cleverly collapse for easy insertion, a design that seems promising.
Compared to standard propeller stirrers from VWR and magnetic stirrers, this centrifugal model seemed like the most suitable option for my specific needs. Magnetic stirrers often struggle with viscous solutions or when mixing solids, while large propeller stirrers are ineffective due to their size constraints. My initial excitement stems from the potential time-saving and process-enhancing capabilities this stirrer offers.
I am cautiously optimistic. While the design is promising and the IKA Works name instills confidence, the true test will be its performance with various solutions and vessel types.
Real-World Testing: Putting VWR Stirring Elements, IKA Works 1132700 R 1355 Centrifugal Stirrer to the Test
First Use Experience
My first test involved using the VWR Stirring Elements, IKA Works 1132700 R 1355 Centrifugal Stirrer to mix a viscous polymer solution in a 500mL round-bottom flask with a narrow neck. The flask was placed in a water bath to control temperature during mixing. The stirrer was easily inserted into the flask.
The stirrer performed admirably, quickly unfolding upon activation and creating a strong vortex within the solution. There was no noticeable vibration or instability, even at higher speeds. I did observe that the mixing action was somewhat localized to the bottom of the flask.
Extended Use & Reliability
After several weeks of using the VWR Stirring Elements, IKA Works 1132700 R 1355 Centrifugal Stirrer for various applications, its reliability has proven commendable. The stainless-steel construction has held up well to constant exposure to different chemical solutions, with no signs of corrosion or degradation. Cleaning the stirrer is straightforward, involving a simple rinse with appropriate solvents followed by drying.
Compared to my previous experiences with standard overhead stirrers, the centrifugal design of this stirrer has proven particularly advantageous when working with narrow-necked vessels. It has allowed me to perform experiments that were previously difficult or impossible. It handles moderately viscous samples well, but struggles a bit with very high viscosity materials, requiring lower speeds to prevent motor strain.
Breaking Down the Features of VWR Stirring Elements, IKA Works 1132700 R 1355 Centrifugal Stirrer
Specifications
The VWR Stirring Elements, IKA Works 1132700 R 1355 Centrifugal Stirrer features an 8mm diameter shaft made of stainless steel, ensuring chemical resistance and durability. The stirrer head diameter expands from 2.4 cm to 10 cm (approximately 7/8 inches to 4 inches) when in operation, providing a decent mixing area. The 55 cm (21 5/8 inches) shaft length accommodates a variety of vessel depths.
The IKA Works number for this specific model is 1132700, and it has a maximum speed rating of 800 rpm. This speed is suitable for many laboratory applications requiring moderate to high shear forces. Having a stainless steel shaft minimizes the risk of contamination and reaction with the stirred substances.
Performance & Functionality
The VWR Stirring Elements, IKA Works 1132700 R 1355 Centrifugal Stirrer excels in its primary function: mixing liquids within narrow-necked vessels. The collapsible blades efficiently enter tight openings, then expand to create adequate mixing. This is particularly useful for applications like pharmaceutical research or chemistry labs where reactions often take place in specialized flasks.
The main strength lies in its ability to reach into vessels that traditional stirrers cannot. A slight weakness is that the mixing is somewhat localized to the bottom of the vessel. However, this stirrer meets expectations for applications where access is the primary challenge.
Design & Ergonomics
The stainless-steel construction imparts a sense of durability and quality. The design is simple and functional, focusing on the collapsible blade mechanism. While the stirrer itself is lightweight, the overall ergonomics depend heavily on the overhead stirrer motor it’s attached to.
There is virtually no learning curve, as it operates in the same manner as any standard overhead stirrer accessory. Insert the shaft into the chuck of a compatible stirrer motor, and begin mixing.
Durability & Maintenance
The stainless-steel construction suggests good longevity. After weeks of use, there are no signs of wear or corrosion. It’s important to clean the stirrer thoroughly after each use, especially when working with corrosive substances.
Cleaning involves simply rinsing the blades and shaft with a compatible solvent and drying. Regular inspection for any mechanical damage is advisable.
Accessories and Customization Options
The VWR Stirring Elements, IKA Works 1132700 R 1355 Centrifugal Stirrer does not come with any specific accessories. Its customization is limited to its use with various overhead stirrer motors that accept an 8mm diameter shaft. Because it is a standard size shaft it’s compatible with many brands of overhead stirrers that match its specifications.
Pros and Cons of VWR Stirring Elements, IKA Works 1132700 R 1355 Centrifugal Stirrer
Pros
- Specifically designed for mixing in narrow-necked vessels, addressing a common laboratory challenge.
- Durable stainless-steel construction ensures chemical resistance and long-term reliability.
- The collapsible centrifugal design allows for easy insertion and efficient mixing.
- The stirrer is compatible with a wide range of overhead stirrer motors with an 8mm chuck.
- Straightforward cleaning and maintenance procedures.
Cons
- Mixing action is somewhat localized to the bottom of the vessel.
- The $1039.00 price is significant for what is essentially an accessory.
Who Should Buy VWR Stirring Elements, IKA Works 1132700 R 1355 Centrifugal Stirrer?
Perfect for: Researchers, chemists, and lab technicians who frequently work with narrow-necked flasks and vessels. Its essential for anyone in the pharmaceutical industry or any lab that deals with specialized containers. It is also a good fit for those who require efficient mixing in controlled environments.
Who should skip this product? Labs that primarily use open beakers or wide-mouthed containers will not find this stirrer particularly useful. Labs with very high viscosity mixing needs may want to consider alternative high torque stirring solutions.
Must-have accessories or modifications? A high-quality overhead stirrer motor with precise speed control is a necessity. Consider also various flask clamps and stands to secure vessels during mixing.
Conclusion on VWR Stirring Elements, IKA Works 1132700 R 1355 Centrifugal Stirrer
The VWR Stirring Elements, IKA Works 1132700 R 1355 Centrifugal Stirrer is a specialized tool that fills a specific need in laboratory settings. The ability to effectively mix solutions within narrow-necked vessels is a significant advantage, potentially saving time and effort. The stainless-steel construction and reliable IKA Works engineering further add to its appeal.
The $1039.00 price point is a significant investment, and should be viewed as such. This stirrer is an ideal buy for users and labs who need this specific stirring solution.
I would recommend this product to any laboratory that faces the challenge of mixing solutions in narrow-necked vessels. If you are struggling to achieve adequate mixing in specialized flasks, the VWR Stirring Elements, IKA Works 1132700 R 1355 Centrifugal Stirrer is a worthwhile investment. Consider investing in this tool to improve your lab capabilities.