Popular freezer boxes hold 1.5-2.0 ml tubes and most cryo vials up to 60 mm tall. Boxes feature vent slots under each cell and writing surfaces on the lids. Zylar? boxes are very clear and withstand conventional freezing (-90°C) and storage in liquid nitrogen. Zylar? is an impact-modified styrene-acrylic co-polymer resin. Do not autoclave Zylar? boxes.

BestBox 81-place boxes fit most freezer racks. Permanent dividers won’t lift out. Cell dimensions are approximately 0.5” x 1.25” H (12.7 x 31.7 mm H). Outer dimensions are 5.1” L x 5.1” W x 1.8” H.