Corning® 15mL clear polypropylene (PP) centrifuge tubes come with the advanced polyethylene CentriStar™ caps and are bulk packed 50 per resealable zip lock bag. Foam racks can be purchased separately. The CentriStar™ Cap has a easy-on/easy-off flat top and offers advanced ergonomics with its wider knurls and roll-over edge design for easier gripping. This leak-proof design comes with a revolutionary plug feature that virtually eliminates all seepage when used under recommended conditions. 

Corning? 15mL clear polypropylene (PP) centrifuge tubes come with the advanced polyethylene CentriStar? caps and are bulk packed 50 per resealable zip lock bag. Foam racks can be purchased separately. The CentriStar? Cap has a easy-on/easy-off flat top and offers advanced ergonomics with its wider knurls and roll-over edge design for easier gripping. This leak-proof design comes with a revolutionary plug feature that virtually eliminates all seepage when used under recommended conditions.