LLG low retention pipette tips non-sterile. Certified free of DNase; RNase; suitable for microbiology. Guaranteed metal-free. Sample retention can be a major contributor to pipetting inaccuracy; and siliconization of tips has proved unsatisfactory because of autoclaving and contamination problems. For LLG pipette tips a new polymer; Novelle-Polypropylene has been developed; that produces a ''super slick surface'' on our new LLG pipette tips; that actually improves with autoclaving and cannot leach from the tip surface. On average; Novelle Polymer and LLG pipette tips reduces the tip retention by near 85% and decreases the standard deviation of the retained volume by more than 75%. Liquid handling accuracy and precision are crucial to success in today's molecular biology laboratories; especially for DNA analysis and protein handling. A significant culprit of pipette inaccuracy is binding of sample. The LLG pipette tips reduces the binding; thus increasing sample delivery accuracy. Packed 2 bags of 500.