BioCision TruCool Cryoboxes have a hinged lid that remains attached, ensuring the lid is fitted correctly and markings are in sync with samples TruCool CryoBoxes are equipped with dual indexing systems, including an adjustable removable plastic grid. They feature a 1 through 81 printed grid on the top and inside cover. An A through I, and 1 through 9 column and row indexing around the inner and outer edge of the box. 100-place boxes have a removable 100-place grid and feature an A through J and 1 through 10 column and row indexing around the inner and outer edge of the box. Designed for repeated freezing and thawing in vapor-phase liquid nitrogen applications. 2-inch boxes are compatible with 1 mL and 2 mL cryovials and microcentrifuge tubes. 3.5-inch boxes are compatible with 3.5 to 5 ml tubes. Lid is easy to open, even when frozen, and stays attached to the base, minimizing risk of contamination. Boxes feature a white patch on the front for markings or barcodes. Constructed from laminated cardboard, all CryoBoxes are waterproof and durable. Each device includes a plastic grid which can be removed if needed.