50ml polypropylene conical centrifuge tube with green caps in paperboard rack rnase and dnase free sterile

For the environmentally friendly lab - Sterile, RNase and DNase free 50mL conical tubes in a recyclable paperboard rack. These high quality centrifuge tubes offer the following features: 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 (This is really great!) Paperboard rack is a recyclable, fold-flat alternative to bulky foam racks