Easy to use Single-handed volume selection, loading and dispensing. Wide volume selection range Covers a complete set of dispensing volumes from 1ul to 5000ul. Robust design & construction Minimum maintenance requirements and almost no wear of parts. Bulk or sterile retips The positive displacement disposable syringes are not only ideal for repetitive work, but also the most reliable pipetting tool when it comes to prevention of cross contamination, or pipetting viscous liquids.