The ImmEdge™ Pen (VECTH-4000) is an improvement over the PAP pen for immunohistochemistry, immunocytochemistry, immunofluorescence, and in situ hybridization. It is designed to provide a heat-stable, water-repellent barrier that keeps reagents localized on tissue specimens and prevents mixing of reagents when multiple sections are mounted on the same slide. Order/Quote: https://biolynx.ca/products/VECTH4000?highlight=immedge#immedge