Conical 15 mL and 50 mL centrifuge tubes are made of premium polypropylene for clarity and centrifugal strength. They are supplied sterile, and although they are autoclavable, their polyethylene screw caps are not. Features include:

Tubes:

• Graduations are printed in bold, easy-to-read black ink and are accurate to +/-2%
• Large white marking area provides excellent contrast for identification
• Easy to write on flat surface polyethylene (HDPE) caps feature integrated leak-proof seal
• Tubes include graduations molded into the conical bottom, ideal for pellet viewing and small volume quantification
• Convenient zip-closure bag is a practical alternative to folding and taping opened bags
• Easily refill reusable racks with tubes packed in bag

Racks:

• Plastic rack is manufactured from polypropylene and is autoclavable, reusable, and recyclable
• Chemically resistant to drips
• Design of bottom prevents racks from sticking/freezing to surfaces
• Widely spaced design catches drips and allows tubes to be retrieved more easily