time:2026-08-26 15:06:02Views:
Dry ice (solid carbon dioxide) reaches -78.5 °C and delivers far stronger cooling performance than regular water ice. It is widely used for ultra-low-temperature cold-chain shipments of cell-therapy products, special vaccines, biological samples and high-value active pharmaceutical ingredients.
Dry-ice freight comes with unique risks. Extreme low temperatures, continuous sublimation, severe thermal shock and vibration during handling can cause ordinary temperature loggers to suffer reading drift, malfunctions or complete recording stoppage. Temperature excursions will trigger irreversible degradation of biological materials.
1.Ultra-low-temperature resistance of equipment: Conventional loggers fail to work properly below -40 °C. Ordinary batteries, sensors and plastic housings degrade under -70 °C ~-85 °C, resulting in inaccurate readings or total device breakdown.
2.Uncontrollable dry-ice sublimation: Dry ice continuously sublimates into carbon-dioxide gas. High ambient temperature, frequent box openings and extended transit time accelerate its consumption, creating risks of premature warming before cargo delivery.
3.Compliance pressure: For air transport, dry ice is categorized as IATA DGR UN1845 Class 9 dangerous goods. Complete temperature records must be preserved for deviation investigations once temperature non-conformity occur.
4.Harsh physical operating conditions: Drops, collisions, thermal cycling and CO₂-induced condensation during transit may easily damage internal circuits of loggers.
Evaluate the following critical indicators when selecting monitoring hardware:
1.Ultra-low-temperature measuring range covering at least-85 °C. Models with external probes are preferred. Place the probe inside the dry-ice environment while keeping the main unit away from extreme cold to extend service life.
2.Adopt industrial lithium batteries specially validated for ultra-low-temperature conditions. Consumer-grade batteries cannot deliver stable output near-80 °C.
3.Resistance against drop impact and condensation-induced thermal cycling. Equipped with air-transport-relevant certifications and traceable calibration certificates.
1.DI-25 / DI-50 / DI-99 Single-use Dry-Ice Temperature Loggers Ideal for one-way export scenarios. Measuring range:-85 °C ~ +40 °C. Simply plug the unit into a computer USB port after shipment completion. Suitable for bio-pharmacy exports and outbound clinical-sample shipments where device recovery is impossible.
2.PDF-DI & 179-UI Reusable Dry-Ice Loggers PDF-DI comes with a built-in sensor. The 179-UI supports a 1.5-meter external probe. Users can position the probe deep inside the dry-ice container while placing the main unit in a relatively mild environment. Large-capacity memory supports multiple long distance shipments, well-suited for recurring domestic and international ultra-low-temperature projects.
1.Complete logger configuration before packing: set sampling intervals and alarm thresholds, and perform pre-shipment power-on functional tests.
2.Position sensors close to actual goods; avoid direct contact with bulk dry-ice blocks to prevent measurement distortion.
3.Comply with IATA UN1845 requirements for air shipments: apply hazard labels, declare net dry-ice weight on air waybills, and reserve CO-venting channels on packaging.
4.Export and archive temperature reports together with batch-related documents immediately upon cargo receipt. Launch deviation investigation workflows whenever temperature excursions are detected.
Dry-ice ultra-low-temperature transportation imposes much stricter requirements on monitoring hardware compared with standard 2-8 °C cold-chain logistics. General-purpose loggers cannot guarantee valid data under-70 °C conditions.
Select single-use DI-25/50/99 or PDF-DI for one-way export shipments. For repeated-use projects, pick reusable series including PDF-DI, 179-DI and 179-UI.
If you have questions about monitoring-scheme design for your bio-pharmaceutical ultra-low-temperature shipments, feel free to contact the Apresys team for customized recommendations.
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