Product Description
Drawing samples by syringe through a capped bottle keeps contents protected and saves time on every withdrawal. These open top phenolic caps leave the center of the septum exposed, making them well suited to media bottles, sampling ports and automated liquid handling.
This listing is for Wheaton catalog number W240518: Black Phenolic Open Top Screw Cap, 24-400, Case of 200. Caps are black phenolic with an open top. The 33-430 size is offered with a gray chlorobutyl septum intended for media bottles, while linerless versions in 13-425 through 24-400 and 33-430 accept the septum of your choice, including pre-slit liners for automated equipment. The caps are autoclavable. Add it to your LIGHT LABS order alongside the rest of your glassware and closures.
Key Features
- Syringe access – Open center exposes the septum.
- Gray chlorobutyl septa – Preinstalled option for 33-430 media bottle caps.
- Linerless versions – Pair with the septum best suited to the sample.
- Automation friendly – Works with pre-slit liners for liquid handlers.
- Autoclavable – Withstands steam sterilization.
Specifications
| Catalog Number | W240518 |
| Brand | Wheaton (DWK Life Sciences) |
| Description | Black Phenolic Open Top Screw Cap, 24-400 |
| Sold As | Case of 200 |
| Material | Phenolic |
| Color | Black |
| Style | Open top |
| Thread | 13-425; 15-425; 18-400; 20-400; 22-400; 24-400; 33-430 |
| Septa | Gray chlorobutyl or linerless |
| Autoclavable | Yes |
Available Options
- 240680 – Black Phenolic Open Top Screw Cap, 33-430, Gray Butyl, Case of 100
- 240683 – Black Phenolic Open Top Screw Cap, 33-430, Gray Butyl, Case of 1,000
- W240508 – Black Phenolic Open Top Screw Cap, 13-425, Case of 200
- W240509 – Black Phenolic Open Top Screw Cap, 15-425, Case of 200
- W240515 – Black Phenolic Open Top Screw Cap, 18-400, Case of 200
- W240516 – Black Phenolic Open Top Screw Cap, 20-400, Case of 200
- W240517 – Black Phenolic Open Top Screw Cap, 22-400, Case of 200
- W240540 – Black Phenolic Open Top Screw Cap, 33-430, Linerless, Case of 200
Applications
- Media bottle sampling
- Automated liquid handling
- Septum-sealed vials
- Sterile reagent withdrawal
