The PorLab® Sinfrost microscope slides feature 1 frosted writing area on 1 Side at 1 End. The writing area is 20mm in depth and resistant to general chemicals and stains which are commonly utilized in laboratory. As upgraded product of Surplain microscope slide, the Sinfrost microscope slides, support easy direct-to-slide marking by pencil and designated mark pens as well as conventional labeling system but can’t be used in any direct-to-slide printing system.