Dry Ice or Ice Pack: Which Keeps Cargo Safer in 2025?
Dry Ice or Ice Pack: Which Keeps Cargo Safer in 2025? Need frozen steaks or chilled vaccines to arrive perfect? Choosing dry ice or ice pack correctly is the difference between a rock‑solid delivery and a soggy mess. Tests show dry ice stays at –78 °C but demands haz‑mat labels, while premium gel packs hover at 2 °C for up to 48 h. Below you’ll find clear rules, cost numbers, and a one‑click selector to nail your next shipment. When does dry ice or ice pack fit your temperature window? How do 2025 USPS and carrier rules differ for each option? What do cost, weight, and sustainability look like side‑by‑side? Which add‑ons (PCM, liners) boost performance most? Dry Ice or Ice Pack—Which Fits Your Temperature Needs? Dry ice wins below –18 °C; ice packs rule the 0–8 °C “cool‑chain.” Dry ice sublimates instead of melting, so it keeps ice cream or cell therapy products fully frozen for 24–72 h. Gel or PCM packs stabilize chilled produce, insulin, or biologics without freeze damage. Outdoor trials confirm gel‑pack cores stay under...