EISCO Hollow Stopper Hexagonal 19/26 Cone Borosilicate Glass CH0872I

Description

Product Overview

The EISCO Hollow Stopper is engineered to meet the rigorous demands of modern laboratory environments while offering the simplicity and reliability required for everyday use. Constructed from premium borosilicate glass, this stopper provides exceptional thermal resistance, chemical inertness, and mechanical strength, ensuring that it will not crack or degrade when exposed to a wide range of temperatures and solvents. Its distinctive hexagonal top design not only adds a tactile grip for effortless insertion and removal but also reduces the likelihood of accidental slippage during critical procedures. The round end complements the hexagonal head, allowing the stopper to sit flush against the opening of standard laboratory containers, creating a tight seal that prevents vapor loss and contamination.

Measuring 19/26 cone size, the stopper fits seamlessly into a variety of common laboratory bottles, flasks, and jars, making it a versatile accessory for chemists, biologists, and hobbyist scientists alike. The lightweight yet robust construction, weighing just 0.53 ounces, ensures that the stopper can be handled with precision without adding unnecessary bulk to the apparatus. Additionally, the clear, high‑clarity glass provides full visibility of the contents, enabling quick visual checks without the need to remove the stopper.

Designed with both performance and convenience in mind, the EISCO Hollow Stopper complies with industry standards for laboratory consumables, offering a reliable solution that can be trusted for repeated use in demanding experimental workflows. Whether you are conducting titrations, storing reagents, or setting up long‑term cultures, this stopper delivers consistent sealing performance that helps maintain the integrity of your samples.

Usage

In a research laboratory, the EISCO Hollow Stopper excels in a multitude of applications. It is ideal for sealing reaction vessels during synthesis procedures, where maintaining an inert atmosphere is crucial. The stopper’s chemical resistance ensures that aggressive acids, bases, and organic solvents will not compromise its structural integrity, allowing scientists to focus on experimental outcomes rather than equipment concerns.

For educational settings, the stopper provides a safe and user‑friendly option for students learning basic laboratory techniques. Its easy‑to‑grip hexagonal head encourages proper handling habits, while the transparent glass body allows learners to observe reaction progress without disturbing the system. In home laboratories, hobbyists can rely on the stopper to securely store chemicals, preserve cultures, or protect sensitive solutions from moisture and airborne contaminants.</n

Beyond traditional laboratory use, the stopper can be employed in industrial quality‑control labs, pharmaceutical formulation facilities, and environmental testing stations. Its ability to withstand temperature fluctuations makes it suitable for processes that involve heating or cooling cycles, such as reflux setups or cryogenic storage. The stopper also performs well in field‑based research where portability and durability are essential, offering a compact sealing solution that can be transported easily.

When used in conjunction with compatible glassware, the EISCO Hollow Stopper helps streamline workflow by reducing the need for additional sealing accessories. Its universal fit across a range of bottle neck sizes eliminates the hassle of maintaining an extensive inventory of specialized stoppers, simplifying inventory management and reducing operational costs.

Why Choose Us

Choosing the EISCO Hollow Stopper means selecting a product backed by a legacy of quality and innovation in laboratory supplies. EISCO, a recognized manufacturer in the scientific community, adheres to strict quality‑control protocols throughout the production process, ensuring that each stopper meets exacting standards for dimensional accuracy and material purity. The use of high‑grade borosilicate glass not only guarantees superior performance under extreme conditions but also reflects a commitment to durability and longevity, reducing the frequency of replacement and minimizing waste.

Our dedication to customer satisfaction extends beyond the product itself. We provide responsive technical support to address any inquiries regarding compatibility, usage, or troubleshooting. Should you encounter any issues, our knowledgeable service team is prepared to offer guidance and, if necessary, arrange for prompt replacement under our warranty policy. This level of after‑sales service underscores our confidence in the product’s reliability and our desire to foster long‑term relationships with our clients.

Furthermore, the EISCO Hollow Stopper is manufactured in facilities that comply with international safety and environmental regulations, ensuring that the product is both safe for users and responsibly produced. By selecting this stopper, laboratories can align with sustainability goals while maintaining high performance standards.

Our product design philosophy emphasizes user‑centric features such as the ergonomic hexagonal head, which reduces hand fatigue during repetitive tasks, and the precise cone dimensions that guarantee a leak‑free seal. These thoughtful details differentiate the EISCO stopper from generic alternatives, delivering tangible benefits that enhance experimental accuracy and efficiency.

Key Features

• High‑quality borosilicate glass resists thermal shock and chemical attack, extending product life.
• Hexagonal top provides a secure grip for easy insertion and removal, improving workflow safety.
• 19/26 cone size fits a wide range of standard laboratory bottles, reducing the need for multiple stopper types.
• Transparent design allows quick visual inspection of contents without disturbing the seal.
• Responsive customer support and warranty ensure confidence and assistance throughout the product’s lifespan.

FAQ

What types of chemicals can the stopper safely contain?

The stopper is made from borosilicate glass, which is chemically inert to most acids, bases, and organic solvents. It can safely hold a broad spectrum of laboratory reagents without degrading or reacting.

Can the stopper be used at high temperatures?

Yes. Borosilicate glass tolerates rapid temperature changes and can be used in heating applications up to 500 °F (260 °C) without cracking, making it suitable for reflux and other thermal processes.

Is the stopper compatible with standard laboratory bottle necks?

The 19/26 cone size is designed to fit common laboratory bottle necks, including those found on typical reagent bottles, culture flasks, and storage jars. It provides a tight seal across a range of diameters.

How do I clean and reuse the stopper?

After use, rinse the stopper with distilled water and, if necessary, a mild detergent. Rinse thoroughly to remove any residue, then allow it to air dry. The glass material can be autoclaved for sterilization if required.

What warranty or support does EISCO offer?

EISCO provides a one‑year limited warranty covering manufacturing defects. Our technical support team is available to answer product‑related questions and assist with any issues you may encounter.