Flat-bottom screw-cap test tubes black bakelite-silicone neutral borosilicate with writing zone
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| SKU | Product Name | Price | Qty | |
|---|---|---|---|---|
| K025-001-001 | Tubos de ensayo + tapones de rosca 10 ml 16x100 mm zona de escritura vidrio borosilicato 20 uds |
€6.35
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| K025-002-001 | Tubos de ensayo + tapones de rosca 15 ml 16x150 mm zona de escritura vidrio borosilicato 20 uds |
€6.30
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| K025-003-001 | Tubos de ensayo + tapones de rosca 30 ml 20x150 mm zona de escritura vidrio borosilicato 12 uds |
€6.90
|
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Flat-bottom screw-cap test tubes neutral borosilicate with writing zone
Test tubes in neutral borosilicate glass supplied with black screw caps. Designed for laboratories requiring reliable sample containment and on-tube traceability.
Materials and construction
- Tube: Neutral borosilicate glass — chemically and thermally resistant
- Cap: Bakelite body with silicone rubber inner lining
- Closure: Screw thread — leak-tight against common laboratory reagents
- Base: Flat — stable on the bench without a mandatory rack
- Writing zone: Frosted area integrated into the tube wall
Typical applications
Biological and chemical sample storage, solubility testing, dilution preparation, small-scale cultures. The writing zone accepts standard laboratory markers directly on the glass — no adhesive labels to detach or migrate.
Routinely used in biochemistry, microbiology, quality control and teaching laboratories.
Why the silicone lining matters
The silicone coating maintains a hermetic seal even when tubes are tilted or agitated. Bakelite provides structural rigidity and chemical resistance against solvent vapours. This combination is standard in sample storage tube assemblies.
Technical data
- Tube material: Neutral borosilicate glass
- Cap material: Bakelite + silicone lining
- Base: Flat
- Writing zone: Yes, frosted on tube wall
- Supply: Pack — tube and cap included
| Brand | KENZIUM |
|---|