Innovative shape guides and protects pipette tips. The PP reagent reservoir has a standard 50 ml basin on one side and 12 individual 5 ml basins on the other side. Imprinted wells identify samples; loose-fitting lids prevent evaporation and contamination. - 2 basins in 1. - Non-sterile. Innovative shape guides and protects pipette tips. The PP reagent reservoir has a standard 50 ml basin on one side and 12 individual 5 ml basins on the other side. Imprinted wells identify samples; loose-fitting lids prevent evaporation and contamination. - 2 basins in 1. - Non-sterile.