FastWells stickable, stackable, sealable, peelable and reusable reagent barriers! Features: Sticky, flexible silicone gaskets form hydrophobic reagent barriers around specimens without messy adhesives or special slides FastWells may be stacked to increase depth and volume. They remain sealed during agitated washing steps They can be washed, autoclaved and reused FastWell can also be sealed to form incubation chambers using flexible HybriSlip Covers Outer diameters: EMS70325-50 = 18 x 18mm EMS70325-52 = 25 x 25mm EMS70325-54 = 25.5 x 44mm