Molded from durable, autoclavable polypropylene, the 13mm Diamond Culture Tube Cap from Globe Scientific fits plain-end culture tubes and flasks with DeLong-style necks, providing contamination protection and color-coded sample identification.
Available in five colors for rapid visual differentiation, these caps enable laboratories managing multiple sample types to reduce mislabeling errors during high-throughput processing workflows.
Designed as a reusable, autoclavable replacement for foil or cotton closures, Diamond Culture Tube Caps deliver consistent fit and reliable sealing across thousands of capping cycles without cracking or deformation.
13mm Culture Tube Cap Features and Benefits
- Best For: Capping 13mm plain-end glass culture tubes and DeLong-neck flasks for contamination protection
- Material: Polypropylene (PP) — autoclavable at 121°C, chemically resistant to common laboratory solvents
- Colors: Blue, Clear, Green, Red, Yellow — enables visual color-coding for sample organization
- Fit: 13mm tubes — diamond-grip design provides secure, non-slip fit
- Reusable: Withstands repeated autoclaving and handling without degradation
Available Colors and Pack Quantities
| SKU | Fits Tube Size | Color | Pack Size |
|---|---|---|---|
| 118150B | 13mm | Blue | Case of 1000 |
| 118150B-100 | 13mm | Blue | Bag of 100 |
| 118150C | 13mm | Clear | Case of 1000 |
| 118150C-100 | 13mm | Clear | Bag of 100 |
| 118150G | 13mm | Green | Case of 1000 |
| 118150G-100 | 13mm | Green | Bag of 100 |
| 118150R | 13mm | Red | Case of 1000 |
| 118150R-100 | 13mm | Red | Bag of 100 |
| 118150Y | 13mm | Yellow | Case of 1000 |
| 118150Y-100 | 13mm | Yellow | Bag of 100 |
Laboratory Applications
- Capping glass culture tubes during bacterial and fungal culture incubation to prevent airborne contamination
- Color-coding sample tubes by experiment, patient, or reagent type for rapid visual identification
- Replacing aluminum foil and cotton plug closures with a reusable, autoclavable cap that reduces consumable waste
- Sealing DeLong-neck flasks during media preparation and storage in microbiology laboratories
- Protecting tube contents during transport between laboratory departments and storage locations
Quality Assurance and Compliance
Globe Scientific manufactures Diamond Culture Tube Caps from virgin polypropylene under ISO 9001 certified quality systems. Each cap undergoes dimensional verification to ensure consistent fit across 13mm tube diameters from multiple manufacturers. The autoclavable construction eliminates the recurring cost of disposable closures.
Culture Tube Cap Comparison: Why Choose Globe Scientific?
| Feature | Globe Scientific 13mm Diamond Cap | Typical Competitor |
|---|---|---|
| Material | Polypropylene — autoclavable | PE or silicone (often not autoclavable) |
| Color Options | 5 colors per size | Limited — often clear only |
| Pricing | Below retail pricing | Full retail |
| Ships From | USA inventory | Varies |
| Authorized Dealer | Yes — LabSupplies.com | Often third-party reseller |
Volume Discounts and Institutional Pricing
LabSupplies.com offers tiered quantity pricing for academic and research institutions. As an authorized dealer, we ship directly from USA inventory.
Frequently Asked Questions
What size culture tubes do 13mm caps fit?
Globe Scientific 13mm Diamond Culture Tube Caps fit plain-end glass culture tubes with a 13mm outer diameter. They also fit flasks with DeLong-style necks or ports of the same diameter. The caps provide a secure, non-slip fit that prevents contamination during incubation and storage.
Can polypropylene culture tube caps be autoclaved?
Yes, Globe Scientific Diamond Culture Tube Caps are manufactured from autoclavable polypropylene. They withstand repeated autoclaving at 121°C and 15 psi without cracking, warping, or losing their dimensional fit on 13mm tubes.
What colors are available for 13mm culture tube caps?
LabSupplies.com stocks Globe Scientific 13mm Diamond Culture Tube Caps in five colors: Blue, Clear, Green, Red, and Yellow. Both bag of 100 and case of 1000 quantities are available for each color.