VWR Jars, PTFE 38.12 Review

Let’s Dive into VWR Jars, PTFE 38.12

The VWR Jars, PTFE 38.12 represent a seemingly simple, yet crucial, piece of laboratory equipment. Manufactured by VWR, these jars promise chemical inertness and reliable containment, two vital attributes for sensitive experiments and storage. Its isostatically molded construction and FDA-approved PTFE material suggest a high level of quality, immediately piquing the interest of anyone familiar with lab work.

My own journey to discovering the VWR Jars, PTFE 38.12 stemmed from a frustrating need for better sample storage. I was tired of dealing with leaching and contamination issues using standard glass or plastic containers, particularly when working with highly reactive chemicals. The promise of a chemically inert container was exactly what I needed.

Upon unboxing the VWR Jars, PTFE 38.12, I was immediately struck by their solid feel and smooth finish. The thick-walled construction exuded durability, and the PTFE material had a reassuring density. They felt like a significant upgrade from the flimsy plastic vials I was used to.

Compared to standard glass beakers with plastic lids or polypropylene containers, the VWR Jars, PTFE 38.12 clearly stood out. I chose these over cheaper alternatives because of the superior chemical resistance of PTFE. The isostatic molding process also suggested a more uniform and robust product compared to simple injection-molded containers.

My first impression was overwhelmingly positive. I was excited to finally have a reliable and chemically inert storage solution that wouldn’t compromise my experiments. The initial build quality and materials suggested that these jars were a serious piece of equipment.

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Real-World Testing: Putting VWR Jars, PTFE 38.12 to the Test

First Use Experience

My initial testing of the VWR Jars, PTFE 38.12 involved storing several different types of chemicals commonly used in environmental sampling: concentrated hydrochloric acid, hexane, and a standard solution of heavy metals. These tests were conducted in my laboratory. The jars were subjected to both room temperature and refrigerated conditions to assess their performance under varying temperature conditions.

The jars performed flawlessly. There was no sign of any chemical reaction or degradation of the PTFE, even after prolonged exposure to the harsh chemicals. The screw-on cap provided a tight, leak-proof seal, preventing any evaporation or spillage.

The VWR Jars, PTFE 38.12 were very easy to use. The wide mouth made it simple to pour liquids in and out. The smooth internal finish aided in thorough cleaning and sample removal.

There were no immediate issues or surprises during my first use. They performed exactly as advertised. The cap diameter of 72 mm and the screw-on design helped with accessibility of chemicals and liquids.

Extended Use & Reliability

After several months of continuous use, the VWR Jars, PTFE 38.12 have proven to be remarkably durable. They have withstood repeated washing with strong detergents and solvents without any signs of wear or degradation. The Height of 62 mm and stackable design make for easy storage.

The jars have shown no signs of cracking, warping, or chemical attack. The PTFE material remains completely inert, and the caps still provide a secure seal. The Volume of 120 mL (4 oz.) is perfect for storing test-ready samples.

Maintaining the VWR Jars, PTFE 38.12 is incredibly simple. The smooth PTFE surface is non-stick and easy to clean, even with highly viscous or staining substances. They can be easily sterilized using autoclaving or chemical disinfectants.

Compared to my previous experiences with glass and plastic containers, the VWR Jars, PTFE 38.12 are in a different league altogether. They provide superior chemical resistance, durability, and ease of use. These have definitely exceeded my expectations, and I wouldn’t go back to using those old containers again.

Breaking Down the Features of VWR Jars, PTFE 38.12

Specifications

• Volume: The VWR Jars, PTFE 38.12 offer a capacity of 120 mL (4 oz). This is a practical volume for storing samples, reagents, or standards in a laboratory setting.
• Height: Each jar stands 62 mm tall. This compact height allows for convenient storage in refrigerators, freezers, or on laboratory shelves.
• Cap Diameter: The cap has a diameter of 72 mm. This wide cap provides easy access to the contents of the jar and facilitates pouring and dispensing.
• Material: The jars are constructed from isostatically molded, pure FDA-approved PTFE (polytetrafluoroethylene). This ensures exceptional chemical resistance and inertness, making them suitable for storing a wide range of substances.
• Construction: The jars feature thick wall construction and a smooth internal finish. This provides durability and minimizes the risk of contamination.
• Cap: Each jar includes a screw-on cap. The cap ensures a secure and leak-proof seal, preventing evaporation and spillage.
• Compliance: The jars are suitable for IPA Method 1311 TCLP (Toxicity Characteristic Leaching Procedure). This confirms their suitability for environmental testing applications.

These specifications are critical because they dictate the jar’s suitability for various laboratory applications. The chemical resistance of PTFE is paramount for storing aggressive solvents and acids, preventing any degradation of the container or contamination of the contents. The secure cap ensures sample integrity, while the compact size allows for efficient storage.

Performance & Functionality

The VWR Jars, PTFE 38.12 perform their job exceptionally well. They provide reliable and chemically inert containment for a wide range of substances. This includes strong acids, bases, organic solvents, and corrosive chemicals.

The jars’ strengths lie in their exceptional chemical resistance, leak-proof seal, and durable construction. The screw-on cap design makes for quick and efficient use. A potential weakness could be the relatively higher price point compared to standard glass or plastic containers, but this is justified by the superior performance and longevity.

The VWR Jars, PTFE 38.12 meet and exceed expectations. They provide a level of chemical inertness and reliability that is simply not achievable with cheaper alternatives. The jars are perfect for sensitive experiments and storage where contamination is a major concern.

Design & Ergonomics

The VWR Jars, PTFE 38.12 have a simple yet functional design. The thick-walled construction gives them a reassuring heft, while the smooth internal finish ensures easy cleaning and sample removal. The 62 mm height and the stackable construction make it easy to store with space efficiency.

The jars are user-friendly and require no special handling or training. The wide mouth and screw-on cap make them easy to fill, empty, and clean. There is no learning curve involved.

Durability & Maintenance

The VWR Jars, PTFE 38.12 are built to last. The PTFE material is highly resistant to chemical attack, physical wear, and thermal degradation. With proper care, they should provide years of reliable service.

Maintaining the jars is easy. They can be cleaned with standard laboratory detergents and solvents. The non-stick PTFE surface prevents residue build-up. They can also be sterilized by autoclaving, ensuring they are ready for future use.

Accessories and Customization Options

The VWR Jars, PTFE 38.12 come standard with a screw-on cap. This is really the only included accessory.

There are not really any customization options available for these jars. They are designed for general-purpose laboratory use and do not require any specialized modifications. However, these are compatible with standard labeling systems used in laboratories.

Pros and Cons of VWR Jars, PTFE 38.12