Thermo scientific F1-ClipTip Multichannel Pipette, 8-Channel 10-100 Cat#4661130N Thermo scientific Thermo Scientific F1-ClipTip Multichannel Pipettes use ClipTip tips that eject only when you intend them to. The ClipTip technology offers extremely low tip attachment and ejection forces and a complete seal on every channel. This can improve the reproducibility of your results.