PAP pen for immunostaining

5 mm tip width




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Use pen to draw a hydrophobic circle around slide-mounted tissue. Prevents the waste of valuable reagents by keeping liquid pooled in a small droplet. Insoluble in ethanol, acetone and water, but will wash off with xylene.

For use with paraffin-mounted sections or slides treated with albumin or poly-lysine.


Each pen can make more than 600 circles.


Exclamation markHealth hazard

Signal Word



NA 1993 / PGIII

WGK Germany


Flash Point(F)

159.8 °F - closed cup

Flash Point(C)

71 °C - closed cup

Certificate of Analysis

Certificate of Origin

Bruce A Corliss et al.
Frontiers in physiology, 10, 1389-1389 (2019-11-30)
Frigid temperatures of the Southern Ocean are known to be an evolutionary driver in Antarctic fish. For example, many fish have reduced red blood cell (RBC) concentration to minimize vascular resistance. Via the oxygen-carrying protein hemoglobin, RBCs contain the vast...
Mimi R Borrelli et al.
Aesthetic surgery journal, 40(4), 369-379 (2019-04-12)
Breast capsular contracture is a major problem following implant-based breast reconstruction, particularly in the setting of radiation therapy. Recent work has identified a fibrogenic fibroblast subpopulation characterized by CD26 surface marker expression. This work aimed to investigate the role of...

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