Fits NPP-200,NPX2-200,NPLO2-200, NPP-1000,NPX2-1000,NPLO2-1000 RNase and DNase Free. Universal Fit (fits most pipettes). Ideal for molecular and microbiology applications. Prevents transferring from volatile or hazardous samples. Hydrophobic,non-gel filter prevents sample from being trapped in the tips. No sample loss with accidental over-pipetting. Endorotoxin-free Safety-barrier against accidental over-pipetting AeroGard/UniFit tips are specifically designed for use with Nichiryo pipettes and others