Description
Product Overview
United Scientific offers a premium line of disposable culture tubes designed for demanding laboratory environments. Constructed from high‑quality 5.1 expansion borosilicate glass, each tube provides exceptional chemical resistance, minimizing the risk of sodium leaching and ensuring sample integrity. The tubes measure 13 × 100 mm and hold up to 9 mL of liquid, making them ideal for a wide range of microbiology, cell culture, and analytical applications. Their rimless design simplifies the insertion of stoppers or caps, reducing the chance of breakage during handling. Every tube meets USP Type I and ASTM E438, Type I, Class B standards, guaranteeing compliance with rigorous industry specifications. The product is shipped in shrink‑wrapped trays that keep the tubes aligned and protected from transit shocks, while also preventing cross‑contamination. With a pack size of 1,000 units, laboratories can maintain a steady inventory without frequent reordering, supporting continuous workflow and cost‑effective operations.
![[Product front view showing all components]](https://www.opticstore.store/wp-content/uploads/2026/08/0594eab6ea5044279d633e63cd928342.jpg)
Usage
These culture tubes are versatile tools for researchers working in microbiology, biotechnology, and clinical diagnostics. Their clear borosilicate construction allows easy visual inspection of growth media, colonies, or cellular suspensions without the need for additional lighting. The 9 mL capacity is sufficient for routine inoculation, sub‑culturing, and small‑scale fermentation processes, while the 13 × 100 mm dimensions fit standard incubators, shakers, and storage racks. The rimless design enables rapid sealing with silicone or rubber stoppers, facilitating anaerobic or aerobic experiments that require airtight conditions. Because the glass is resistant to a broad spectrum of chemicals, the tubes can be used with acidic, basic, or organic solvents commonly encountered in laboratory protocols. Their disposable nature eliminates the need for cleaning and sterilization, reducing labor costs and minimizing the risk of cross‑contamination between samples. Ideal for academic labs, pharmaceutical research facilities, and quality‑control laboratories, these tubes support reproducible results and streamline daily workflows.
Why Choose Us
United Scientific is a trusted manufacturer with decades of experience delivering reliable glassware to scientific communities worldwide. Our disposable culture tubes undergo stringent quality control processes, including visual inspection, dimensional verification, and pressure testing, to ensure each unit meets exacting standards. The use of 5.1 expansion borosilicate glass provides superior thermal shock resistance, allowing the tubes to withstand rapid temperature changes during heating or cooling cycles without cracking. Compliance with USP Type I and ASTM E438 specifications demonstrates our commitment to providing products that satisfy regulatory requirements for sterility and material purity. The shrink‑wrapped packaging not only protects the tubes during shipping but also maintains a sterile environment until the point of use. Additionally, United Scientific offers responsive customer support, technical assistance, and a clear return policy, giving laboratories confidence that any issues will be addressed promptly. By choosing our culture tubes, researchers benefit from consistent performance, reduced downtime, and a cost‑effective solution that aligns with the highest industry standards.
Key Features
- High‑quality 5.1 expansion borosilicate glass provides excellent chemical resistance and thermal stability for reliable sample handling.
- Uniform 13 × 100 mm dimensions and 9 mL capacity support a wide range of microbiology and cell culture applications.
- Rimless design enables easy insertion of stoppers, ensuring airtight sealing for anaerobic and aerobic experiments.
- Meets USP Type I and ASTM E438, Type I, Class B standards, guaranteeing compliance with strict laboratory requirements.
- Dedicated customer support and hassle‑free return policy provide peace of mind and after‑sales assistance.
FAQ
What type of glass is used in these culture tubes?
The tubes are made from high‑quality 5.1 expansion borosilicate glass, which offers superior chemical resistance, low leaching, and excellent thermal shock performance.
Are the tubes compatible with standard laboratory equipment?
Yes, the 13 × 100 mm size fits common incubators, shakers, and rack systems, and the rimless design works with standard silicone or rubber stoppers.
Do the tubes meet any regulatory standards?
They comply with USP Type I and ASTM E438, Type I, Class B specifications, ensuring they meet rigorous quality and sterility requirements.
How are the tubes packaged to prevent breakage?
Each set of tubes is shrink‑wrapped in a protective plastic film that keeps them aligned and shields them from impact and contamination during transit.
Can these tubes be used with organic solvents?
Yes, the borosilicate glass construction resists a wide range of chemicals, including many organic solvents, making the tubes suitable for diverse experimental protocols.





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