GLW Slideboxes are available made from polypropylene, polystyrene or polycarbonate. The polystyrene boxes accommodate temperature ranges from -80°C to +70°C. The polycarbonate boxes accommodate temperature ranges from -150°C to +130°C and are autoclavable. The polypropylene slide boxes accommodate temperature ranges from -90°C to 121°C and are autoclavable. They are an optimal fit for standard microscope slides (76 mm x 26 mm x 1 mm). Non-standard slides and cover glasses of various sizes also fit perfectly in our slide boxes thanks to our accessory products.