Description
The Screw Neck Tubes and Culture Media Tubes from Osmosis Scientific are precision-manufactured borosilicate laboratory tubes designed for secure containment and handling of culture media, reagents, and samples in laboratory environments.
Each tube features a Capalu 16 screw thread finish, ensuring compatibility with closures for leak-resistant sealing during storage and processing. Manufactured from high-quality borosilicate glass, these tubes offer excellent resistance to chemical exposure and routine laboratory temperature variations.
Available in multiple dimensional configurations with nominal volumes ranging from 5 ml to 42 ml, these screw neck tubes accommodate a wide range of microbiological and analytical applications. Tube variants are available with both flat and round bottom designs depending on handling and storage requirements.
With consistent wall thickness ranging from 0.95 mm to 1.05 mm, the tubes provide structural strength and uniform heat transfer during culture media preparation and laboratory workflows.
| Dia (mm) | Length (mm) | Wall Thickness (mm) | Nominal Volume (mL) | Bottom | Screw Thread | Inner Size | Case Size | SKU | Enquiry |
|---|---|---|---|---|---|---|---|---|---|
| 16 | 50 | 0.95 | 5 | Flat | Capalu 16 | 250 | 1000 | SNTCMT-16×50-05 | Enquire Now |
| 16 | 75 | 0.95 | 8 | Flat | Capalu 16 | 250 | 1000 | SNTCMT-16×75-08 | Enquire Now |
| 16 | 112.5 | 0.95 | 15 | Flat | Capalu 16 | 250 | 1000 | SNTCMT-16x112_5-15 | Enquire Now |
| 16 | 125 | 0.95 | 18 | Flat | Capalu 16 | 250 | 1000 | SNTCMT-16×125-18 | Enquire Now |
| 16 | 160 | 0.95 | 20 | Round | Capalu 16 | 250 | 1000 | SNTCMT-16×160-20R | Enquire Now |
| 18 | 125 | 0.95 | 22 | Flat | Capalu 16 | 250 | 1000 | SNTCMT-18×125-22 | Enquire Now |
| 18 | 145 | 1.05 | 24 | Flat | Capalu 16 | 250 | 1000 | SNTCMT-18×145-24 | Enquire Now |
| 18 | 180 | 1.05 | 31 | Flat | Capalu 16 | 250 | 252 | SNTCMT-18×180-31 | Enquire Now |
| 20 | 200 | 1.05 | 42 | Round | Capalu 16 | 215 | 215 | SNTCMT-20×200-42R | Enquire Now |
Frequently Asked Questions (FAQs)
Borosilicate glass offers strong chemical resistance, high thermal stability, and low thermal expansion, allowing reliable heating, autoclaving, and long‑term storage without distortion or leaching.
The screw neck (e.g., Capalu 16) mates with matching aluminium or phenolic caps to provide a secure, leak‑proof seal that prevents contamination and evaporation during culture, transport, or storage.
Borosilicate screw neck tubes with appropriate caps and liners are typically autoclavable and can be reused if they remain free from cracks, chips, or heavy etching after sterilization.
They are widely used in microbiology, cell culture, clinical labs, and pharmaceutical or industrial QC for cultivating organisms, performing stability tests, and securely storing sensitive samples.
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