Super PAP Pen Liquid Blocker for IHC, large, each

The Super PAP Pen Liquid Blocker for IHC is a ready-to-use hydrophobic barrier pen for defining a controlled reaction area around tissue sections. Drawing a circle, square, or other boundary helps contain the antibody solution over the section. The pen is stable at temperatures up to 129 °C in microwave heating and is described for PAP, ABC, LSAB, polymeric, immunofluorescence, ASD, enzyme, and frozen-section immunostaining workflows. For paraffin sections, apply it after deparaffinization; for frozen sections, apply it after fixation.