The Newest Staining Guard Pen
New and improved. The Super PAP Pen outperforms the original PAP Pen. The Super PAP Pen may be used at temperatures as high as 120°F. (The old style PAP Pen worked only up to 90°F). With this high temperature feature, one can now use the Super PAP Pen to perform the peroxidase-anti-peroxidase method, ABC method, and Fluorescent antibodies method with satisfactory results.
Using a Pap-Pen