Glass Culture Tube Caps

These culture tube caps are designed to fit plain end culture tubes and flasks with DeLong style necks or ports. They are molded from durable, autoclavable polypropylene (PP) and have ridges inside cap provide secure grip and gas exchange.

The caps help maintain sterility without cotton plugging and reduce sample evaporation compared to cotton plugging. They provide the same evaporation and sterility benefits as stainless steel closures. Available in five (5) colors for easy sample identification and organization.

Features:
- Maintain sterility without cotton plugging
- Same evaporation and sterility benefits as stainless steel closures
- Autoclavable
- Available in five (5) colors

Specifications:
Size options: 13mm, 16mm, 18mm, 20mm, or 25mm
Material: Polypropylene
Colors: Clear, Blue, Green, Red, & Yellow