Tips are manufactured from the finest raw materials using precise production techniques that provide consistent quality performance. Primary products are made from virgin polymers and contain no recycled, reprocessed, or altered plastics. Blue, Polypropylene Racked Tips Standard Rack Non-Sterile Volume Range: 100-1000ul Grad Lines: No Graduations Certified Human DNA Free Certified PCR Inhibitor Free Certified Pyrogen Free 100 Tips/Rack, 10 Racks/Pack, 5 Packs/Case