The Marketlab In/Out Cards for Microscope Slide Box are heavy-duty tracking cards engineered to streamline specimen inventory management in histology, pathology, and clinical laboratories. Designed to be inserted directly into a slide storage tray whenever a microscope slide is removed, each card provides dedicated space to record the slide identification number, employee name, and removal date. Crafted from durable heavy cover stock without natural rubber latex, these cards are available in five high-visibility colors in packs of 1,000 to support effortless color-coded workflow organization.