Cap locking options for every application.

• Microcentrifuge tubes with graduations and frosted panels for easy labeling
• Microbiological cleanroom controlled production (ISO Class 8)
• Certified RNase, DNase, and endotoxin free
• Autoclavable at 121 °C for 20 minutes

These Cole-Parmer® polypropylene (PP) microcentrifuge tubes come in three cap lock options for a wide range of applications.

The double-locking caps are ideal when working with valuable samples; they prevent accidental opening during inoculation or storage and are extremely leaktight.

The click-close tubes close firmly and are ideal for heating applications.
The easy-open caps eliminate stress and sore thumbs when opening, and are best for general-purpose use and storage.