Centrifuge tubes with graduations 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 caps feature integrated leak-proof seal
• Convenient zip-closure bag is a practical alternative to folding and taping opened bags
• Ergonomic flip top cap is designed for single handed operation
• Paperboard rack is a recyclable, fold-flat alternative to bulky foam racks

Tubes with graduations molded into the conical bottom, ideal for pellet viewing and small volume quantification.