PYREX 18×150 mm Disposable Rimless Culture Tubes 99445-18 Pack of 25

Description

Product Overview

PYREX has been a cornerstone of scientific glassware for more than a century, and the 18×150 mm Disposable Rimless Culture Tubes continue that legacy with a focus on durability, clarity, and ease of use. Each tube is crafted from Type I Class B alumino‑borosilicate glass, a material known for its exceptional resistance to thermal shock, chemical corrosion, and mechanical stress. With a precise 28 mL internal volume, the tubes provide ample space for a wide range of microbiological cultures, cell growth experiments, and small‑scale reactions. The rimless design eliminates the traditional lip, reducing the risk of sample loss during transfer and simplifying sterilization procedures. The tubes are supplied in a pack of 25, ensuring that laboratories have a ready stock of consistent, high‑quality vessels for daily workflows.

Beyond the basic specifications, the tubes feature a smooth, optically clear wall that allows for easy visual inspection of culture growth, color changes, and precipitation without the need for additional equipment. The glass composition tolerates a temperature range from -50 °C to +125 °C, making the tubes suitable for both low‑temperature storage and moderate heating applications, such as incubation or short‑term warming. The dimensions—18 mm outer diameter and 150 mm height—fit standard incubators, racks, and centrifuges, ensuring seamless integration into existing laboratory setups.

Usage

These culture tubes are designed for a broad spectrum of laboratory environments, from academic research labs to industrial quality‑control facilities. They excel in microbiology protocols where sterile, disposable containers are essential, including bacterial plating, broth cultures, and antibiotic susceptibility testing. Cell culture practitioners also benefit from the tubes’ chemical inertness, which prevents leaching of contaminants that could affect sensitive cell lines.

Because the glass can endure temperatures well below freezing, the tubes are ideal for cryopreservation of samples or for experiments that require rapid cooling. Conversely, the upper temperature limit of +125 °C allows for short‑duration heating steps, such as heat‑shock treatments or brief incubations, without compromising the structural integrity of the vessel. The rimless design streamlines the workflow in high‑throughput settings, where rapid filling, mixing, and sealing are required. Users can employ standard sterile pipette tips or syringes to introduce liquids, and the smooth interior surface minimizes adhesion of viscous media.

In addition to routine laboratory work, the tubes are suitable for field‑based applications where portability and robustness are critical. Their resistance to breakage under mechanical stress makes them reliable for transport between field sites and central laboratories. The clear glass also facilitates on‑site visual assessment of culture growth, enabling immediate decision‑making without the need for complex instrumentation.

Why Choose Us

Choosing PYREX means selecting a product backed by a century of scientific expertise and a reputation for uncompromising quality. Each tube undergoes rigorous quality‑control testing to verify dimensional accuracy, glass integrity, and sterility. The manufacturing process adheres to ISO 9001 standards, and the final product is inspected for any micro‑cracks or imperfections that could affect performance.

Our commitment to customer satisfaction extends beyond the point of sale. We provide comprehensive technical support, including guidance on optimal usage, sterilization protocols, and troubleshooting. Should any issues arise, our dedicated service team is available to address concerns promptly, ensuring minimal disruption to your research workflow.

Environmental responsibility is also a core value. The glass used in these tubes is fully recyclable, and our packaging is designed to reduce waste while protecting the product during shipping. By selecting PYREX, laboratories not only gain a reliable tool but also contribute to sustainable laboratory practices.

Key Features

• Robust alumino‑borosilicate glass resists thermal shock and chemical attack for long‑term reliability.
• Rimless design reduces sample loss and simplifies sterilization, improving workflow efficiency.
• 28 mL capacity accommodates a wide range of culture volumes, from small inoculums to larger broth cultures.
• Wide temperature tolerance (-50 °C to +125 °C) supports both cold storage and moderate heating applications.
• Comprehensive technical support and after‑sales service ensure reliable performance throughout the product lifecycle.

FAQ

What is the maximum temperature these tubes can withstand?

The tubes are rated for continuous use up to +125 °C, making them suitable for short‑term heating steps such as incubation or heat‑shock procedures.

Can the tubes be autoclaved for sterilization?

Yes, the alumino‑borosilicate glass tolerates standard autoclave cycles (121 °C, 15 psi) without deformation or loss of integrity.

Are the tubes compatible with standard laboratory racks and centrifuges?

Their dimensions (18 mm OD × 150 mm height) are designed to fit common incubator shelves, rack systems, and centrifuge rotors used in most labs.

Is the glass recyclable after use?

Yes, the glass is fully recyclable. We encourage users to follow local recycling guidelines to minimize environmental impact.

What size options are available for this product line?

PYREX offers a range of sizes, including 10 × 75 mm, 12 × 75 mm, 13 × 100 mm, 16 × 100 mm, 16 × 125 mm, 16 × 150 mm, 18 × 150 mm, and 20 × 150 mm, each available in packs of 25 or 250 depending on laboratory needs.