High impact styrene, compact storage box capable of holding up to 100 individual 76 x 26mm microscope slides or 200 stored back-to-back. The base has moulded-in slots to hold the slides vertically and are individually numbered 1 to 100 in four rows. A matching index card is also provided. Each base also has drainage holes for wet applications in preparative techniques. The transparent hinged lid assists slide selection and has moulded locating grooves to aid stacking. Overall 133 x 133 x 86mm W x D x H.