This Heathrow Scientific Slide Staining Tray holds up to 18 standard microscope slides (76 x 26 mm) securely in place for staining, rinsing, and drying applications. It is ideal for clinical and research laboratory staining. This slide tray is durably constructed from solvent-resistant polypropylene and features non-skid silicone feet to keep the tray in place. There are two ways to empty stain liquid from the tray, you can either pour spouts on each corner or use the drain hole. A drain hole is included with the plug. A black lid is also included for light sensitive applications. This slide tray is equipped with handle cut-outs for easy handling. It also features humidity retention wells for specialized staining needs. This slide staining tray is proudly made in the USA.