PC. Five grid colours for easy-to-identify inventory management provide safe and economical storage of up to 81 cryogenic samples. These coloured boxes hold 1.0 to 2.0 ml cryogenic storage vials in a 9 x 9 array. Dimensions (L x W x H) are 133 x 133 x 52 mm. Usable temperature range is - 196 to +121 °C. Colours match the cryogenic vial colour coders. Transparent lid allows easy viewing of contents. Lids have numbered grid for quick sample identification. Assortment pack with 4 each red, yellow, green, blue, grey, white available. Autoclavable.