ULR-Tips

General Information

Ultra low retention pipet tips for more precision and accuracy

AHN ULR-Tips General Applications

Sample retention can be a mayor contributor to pipetting inaccuracy, and siliconization of tips has proved unsatisfactory because of autoclaving and contamination problems. AHN Biotechnologie has developed a new polymer, Novelle-Polypropylene, that produces a “super slick surface” on our new ULR-tips, that actually improves with autoclaving and cannot leach from the tip surface. On average, Novelle Polymer and AHN ULR-tips reduces the tip retention by near 85 % and decreases the standard deviation of the retained volume by more than 75 %.

AHN ULR-Tips Molecular Biology Applications

Also 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 AHN ULR-tips reduces the binding, thus increasing sample delivery accuracy. Tests demonstrates that AHN ULR-Tips significantly reduces the amount of DNA and protein bound by the tip. Furthermore AHN ULR-Tips offer a marked improvement over the best low retention technologies.

AHN ULR-Tips Precise Delivery

Capillary bleeding is a phenomenon where the liquid “creeps” up on the outside of the tip when dispensing, leeding to sample cross. AHN ULR-Tips also like AHN Top-Line tips are bevelled at the opening to avoid such bleeding. As a result the sample is delivered precisely and in full.

AHN ULR-Tips Safe Pipetting

All AHN ULR tips also like AHN Top-Line tips are free from contaminating DNase, RNase and pyrogens and are available sterile or non-sterile in bags or rackboxes. All tips are autoclavable at 121°C for 15 min. AHN ULR-Filtertips also like AHN Top-Line Filtertips have a hydrophobic barrier preventing cross-contamination of sample fluids or vapours getting contact with the pipette shaft. making them ideal for PCR-work or applications involving bio-hazardous, radioactive or corrosive samples.

AHN ULR-Tips Advantages

Ultra low retention – no sample loss inside tip
More reliable results in critical applications (such as quantitative PCR)
Save up to 15 % on expensive reagents
Precise sample delivery due to bevelled tip openings
Available with or without filter, sterile or non-sterile

AHN ULR-Tips Physical Specifications

Sample Retention – Very low
Cold tolerance – Good
Heat tolerance – High
Chemical tolerance – High
Overall strength – High
Product clarity – Good
Product “Hand” – Good