Laboratory cryoboxes: how can cryotubes be organised and traced in cold storage?

The cryoboxes deliver organisation, traceability and robust protection for cryovials from 0.5 to 5 mL, from -80°C freezers through to nitrogen vapour-phase (LN2) dewars. Available in 2-inch or 3-inch heights (133×133 mm footprint), they feature 9×9 (81) or 10×10 (100) grids with alphanumeric indexing. Made from coated cardboard, polypropylene or polycarbonate, they fit seamlessly into racks, ULT freezer drawers and labelling solutions (colour-coding, barcodes). Clear lids, anti-rotation stops and drain/vent holes minimise condensation and handling errors.

What are the different types of cryoboxes and how do you choose the right one?

Three families cover most use cases. The cardboard cryobox, light and recyclable, is suitable for -80 °C freezers. Its water-repellent coating resists frost; it is cost-effective for large volumes. The plastic cryobox comes in polypropylene (PP) for ULT freezers, and polycarbonate (PC) for vapour-phase liquid nitrogen storage. PC combines clarity, rigidity and stability down to -196 °C and, depending on the model, tolerates autoclaving. Dividers for cryoboxes (7×7, 9×9, 10×10, 12×12; 2- or 3-inch height) optimise compatibility with cryovials from 0.5 to 5 mL and storage density.

To choose, cross-check the target temperature range, durability, readability (clear lid, A1–J10 index), the footprint standard 133 mm, and traceability (barcodes, colours). Favour vented lids to limit condensation, reinforced corners for rack loading, and verify compatibility with your drawers, tanks and cryovial formats. Avoid any immersion in the liquid phase unless the box is certified for that use.

Exemplary comparison:

Type	Temperature range	Applications
Water-repellent cardboard	Down to approx. -80 °C	ULT storage, high volume, economical and recyclable solution
PP (polypropylene)	Down to approx. -80 °C	ULT freezers, routine use, good chemical resistance
PC (polycarbonate)	Down to approx. -196 °C (vapour)	Nitrogen tanks (vapour phase), visibility, robustness, sometimes autoclavable

In which applications is a cryobox used?

• Research in life sciences: preservation of cell lines, sera, DNA/RNA, mutant libraries.
• Biobanks and clinics: patient sample aliquots, long-term sample storage, cohort management and traceability.
• Pharma/bioproduction: cell banks, reference batches, stability and QC.
• Agri-food: microbial strains, controls, flavour/enzyme libraries.
• Environment: bacterial isolates, water/soil samples, strain banks.
• Cosmetics and chemicals: sensitive formulations, enzymes, analytical standards.
• Dry-ice logistics, ULT freezers inventories and LN2 dewars (vapour phase).

The different types of cryoboxes and grid inserts available

Frequently asked questions about cryoboxes

Which material should I choose for my cryobox?
Water-repellent cardboard for economy and -80 °C; PP for day-to-day ULT; PC for the nitrogen vapour phase. Choose by temperature range, durability and readability.

Is a plastic cryobox suitable for liquid nitrogen?
Only certified polycarbonate boxes are suitable for the vapour phase. Avoid liquid-phase immersion unless specified; risk of cracking and nitrogen entrapment.

Height 50 or 75 mm: how to decide?
50 mm for 1.2–2 mL cryovials (9×9/10×10 grids). 75 mm for 4–5 mL or tall external-thread caps. Check the height of your drawers/racks.

Can a cryobox be sterilised?
PC is often autoclavable (121 °C). PP may be, depending on the manufacturer. Cardboard cannot be sterilised. Always check the datasheet.

How can I limit picking errors?
Use alphanumeric grids, colour codes, clear lids and barcodes. Keep a box map and your inventory software up to date.

Do cardboard boxes resist humidity?
Treated models are water-repellent and frost-resistant, but avoid any immersion. Replace if deformed to preserve position alignment.

Which compatibility standards should you check?
133×133 mm footprint, 9×9/10×10/12×12 grids, 50 or 75 mm height, and compatibility with your racks, ULT drawers and cryovial formats (0.5 to 5 mL).