Light Lab's AvantGuard Barrier Tips feature an inert hydrophobic barrier, low binding surface technology, extremely clear resin, reference marks, and many other features. They are perfect for PCR reactions, RNA and DNA work, protein work, and any other bench work that requires barrier tips. Each package of Avant Guard Barrier Tips comes with 10 boxes of individually shrinkwrapped, RNase/DNase free tips. All sizes are packaged with 960 tips/pack, except the 1mL tips, which are packaged 1000 tips/pack and the 1.2mL tips which come 768 tips/pack.