Rainin - Low Retention Tips
Rainin LR Low Retention Tips – Advanced Repellent Surface. METTLER TOLEDO employs a unique manufacturing process to produce tips with a uniform field of highly-repellent fluoropolymer molecules that form an impenetrable “superhydrophobic” surface. The result: liquids and molecules are suspended above the polypropylene tip surface, allowing problem liquids to glide effortlessly in and out of the tip. The super-repellent surface of Rainin LR tips `normalizes` the flow characteristics of fluids with diverse compositions and physical characteristics (viscosities, surface tension, density, hydrophobicity, etc.) This results in enhanced pipetting accuracy across a broader range of sample types. The result is greater peace of mind when pipetting.
Significantly Less Residual Volume
The uniform repellent fluoropolymer "field" on the surface of Rainin LR tips prevents any interaction between the sample and the polypropylene tip surface. Shown here, a propylene glycol-based food colorant demonstrates how Rainin LR low retention tips eliminate sheeting activity, dramatically reducing retained sample after dispensing, which is a major source of pipetting inaccuracy.
Not All Low Retention Tips are Created Equal
More common manufacturing methods such as dipping or tumbling tips in a fluoropolymer bath, can produce tips with incomplete and uneven coatings that are likely to adversely affect pipetting accuracy. In addition, tips made with "diamond polished" molds – often touted as low retention – do nothing to prevent samples from reacting with the polypropylene and binding to the tip surface.
Wide Orifice
Rainin wide orifice LR low retention tips combine a wide aperture with a super-repellent surface to accommodate viscous/syrupy liquids, cultured cells and high-molecular polymers (such as genomic DNA). These tips reduce shear force and provide a super-slippery surface to protect delicate samples from damage.
Many Sizes, Styles and Packaging Options
Rainin LR low retention tips are available in many tip styles and sizes, for both LTS and universal-fit pipettes. They come in a selection of packaging options such as racks, GreenPak, SpaceSaver and bulk.
BioClean Quality
Every one of Rainin LR tips are rigorously tested and certified to be free of:
- DNA
- DNase
- RNase
- Pyrogen
- ATP
- PCR Inhibitors