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Most manufacturers give 1-5 years vacuum warranty. AMC and spare parts like canisters, racks, and lids are also available.
Capacity is listed in Liters — e.g. 10L, 20L, 35L, 50L. 1L LN2 ≈ 0.8 kg.
Inner and outer vessel is stainless steel/aluminum with high vacuum insulation between layers.
Storage dewar: Longer hold time, not for moving. Transport dewar: Shorter hold time, rugged, with pressure relief for travel.
Let it warm to room temp and evaporate fully. Then wipe with dry cloth. Don’t use water or soap inside.
Only use transport dewars with proper cart/trolley. Don’t roll, drag, or tilt. Static storage dewars are not for transport.
Check the evaporation rate on the spec sheet. Most lab dewars need refill every 1-3 months. Biological storage dewars are checked weekly.
Use a phase separator or funnel to avoid splashing. Fill slowly to prevent thermal shock. Never fill to the brim — leave 2-3 inches for gas expansion.
Depends on size, type, and evaporation rate. Static storage dewars can hold LN2 from 30 days to 6+ months. Transport containers are shorter, usually 7-20 days.
Biological sample storage: semen, embryos, stem cells, bloodCryogenic freezing in food industry Cryotherapy and medical treatmentsLaboratory cooling and metal treatment
A liquid nitrogen container, also called LN2 dewar, is a vacuum-insulated vessel designed to store liquid nitrogen at -196°C for long periods.
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