Updated August 2025. Large dry ice packs help you ship frozen and ultra‑cold goods with confidence by extending hold time to 24–72 hours while simplifying handling and documentation. Dalam panduan ini, you’ll get a practical calculator, compliant pack‑outs, and decision tools you can use today to reduce temperature excursions and cost. Built for cold‑chain shippers in food, farmasi, biotek, and horticulture.
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What are large dry ice packs and which type fits your route and temp band? (PCM vs.. Co₂)
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How many packs do you need for 24–72 hours? (simple formula + meja)
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How to pack for compliance and fewer excursions? (langkah -langkah)
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When do hazmat rules apply and when they don’t? (UN1845, Kelas 9 overview)
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Apa yang baru 2025 and how does it help you? (Keberlanjutan, sensor, better PCM)
Apa yang large dry ice packs and which type should you choose?
Jawaban singkat: “Large dry ice packs” are either (1) dapat digunakan kembali Paket PCM that freeze below 0 °C for safe, long‑lasting cold, atau (2) CO₂ dry ice blocks/slabs (UN1845) for extreme cold (down to −78.5 °C). Pick PCM large dry ice packs for most frozen shipments (−20 °C to 0 °C); choose CO₂ blocks for ultra‑cold or very long routes. The right choice cuts paperwork, hazards, and cost.
Mengapa itu penting bagi Anda: In everyday cold chain, PCM large dry ice packs deliver sub‑zero control without CO₂ gas or hazmat limits. Use CO₂ only when you truly need ultra‑low temps (MISALNYA., ≤−50 °C) or very long transit beyond 72 jam. That split lets you optimize safety, waktu, and unit economics.
Berapa banyak large dry ice packs Apakah Anda perlu 24-72 jam?
Deep dive: Capacity depends on transit hours, isolasi, panas sekitar, and product mass. For CO₂ dry ice, a practical estimate is 5–10 lb per 24 h in standard insulation; VIP lowers the rate. For PCM large dry ice packs, plan by surface coverage and total PCM mass; pre‑chilled cargo reduces load dramatically. Always confirm with a data logger on your first live runs.
Kalkulator Cepat (aturan -dari ibuundi):
| Shipment scenario | Target temp | Durasi khas | Starting point | Apa artinya ini bagi Anda |
|---|---|---|---|---|
| Makanan beku (−18 °C) | ≤ --18 ° C. | 24–48 h | Line box with large dry ice packs (PCM, −20 ° C.), top‑load extra sheet | Achieve frozen hold without hazmat process. |
| Ultra‑cold biologics | ≤−50 °C | 48–96 h | CO₂ dry ice blocks around payload; vented box | Dingin ekstrem + Kelas 9 labeling required. |
| Plants in summer lanes | 2–10 ° C. | 24–48 h | Paket PCM (0–5 °C) side + atas, add spacer | Avoid freeze injury; no CO₂ gas in box. |
| Vaksin (2–8 ° C.) | 2–8 ° C. | 24–72 h | PCM +5 °C panels + Data Logger | Stable range for audits; tidak ada hazmat. |
| Scenarios consolidated from the three draft articles and field practice. |
Practical tips with large dry ice packs
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Pre‑condition everything: Pre‑freeze or pre‑chill products so packs maintain, tidak membuat, the cold.
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Top‑load cold: Wastafel dingin; put large dry ice packs on top and around sides for even gradients.
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Freeze fully: Freeze PCM packs flat ≥8 hours at −18 °C; no slushy cores. Rehydrate dehydrated sheets before reuse.
Kasus lapangan: A lab shipped vaccines cross‑country in summer using PCM large dry ice packs at +5 °C inside a VIP shipper; the box stayed near 5 °C for ~36 h despite >30 °C ambient, with no hazmat paperwork.
How do you pack with large dry ice packs to cut excursions?
Jawaban singkat: Pre‑cool, menyekat, position, lubang angin (if CO₂), dan label. Large dry ice packs (PCM) go around and above products in a tight, insulated cavity; CO₂ requires vent paths and UN1845 labeling. A tidy pack‑out = longer hold + penanganan yang lebih aman.
Langkah -langkah (applies every time):
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Pre‑cool the shipper (EPS or VIP) and the product.
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Stage your packs: freeze PCM large dry ice packs padat; for CO₂, break slabs to fit.
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Build a cocoon: side‑line → base → product → top‑load extra packs.
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Seal well: reduce air gaps; add void‑fill.
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Instrumentation: place a data logger near the warmest spot (door/top).
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Kepatuhan: vent if CO₂, apply UN1845/Class 9 + Berat bersih; PCM needs no hazmat labels.
Large dry ice packs vs.. CO₂ dry ice vs. Paket gel
| Criterion | Large dry ice packs (PCM) | CO₂ dry ice (UN1845) | Regular gel packs | Apa artinya |
|---|---|---|---|---|
| Suhu | ~−20 °C to +5 °C set points | Down to −78.5 °C | ~ 0 ° C. | Pick PCM for most frozen/chilled; CO₂ for ultra‑cold. |
| Lamanya | 24–72 h (with VIP) | 2–5+ days (enough mass) | 6–12 h | PCM covers most e‑commerce/overnight routes. |
| Hazmat | Tidak ada | Kelas 9; lubang angin + Label | Tidak ada | PCM simplifies ops and training. |
| Reusability | Tinggi (dozens of cycles) | Single -use (Subledlimates) | Dapat digunakan kembali | Lower lifetime cost with PCM. |
| Comparison refined from all three drafts. |
Actionable pointers
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Pharma 2–8 °C: Use +5 °C PCM large dry ice packs with VIP; add a logger and shock indicator.
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Frozen seafood: Use −20 °C PCM; double‑top‑load for 36–48 h or add a small CO₂ layer for >48 H.
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Live plants: Use +5–10 °C PCM; Hindari kontak langsung; Mengerjakan bukan use CO₂ in sealed plant boxes.
Real‑world note: One shipper lost a CO₂ shipment due to no vent path; pressure rose and the package failed. After adding venting and labels, incidents dropped to zero.
Peraturan: when do hazmat rules apply to large dry ice packs?
Jawaban singkat: Only CO₂ “dry ice” is regulated (UN1845, Kelas 9). Large dry ice packs that use PCM are bukan hazmat and need no UN number or special labels. When you ship CO₂ by air or ground, you must vent, mark UN1845 + Berat bersih (kg), and follow carrier limits.
Compliance checklist (CO₂ only):
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UN1845 + Kelas 9 label on each package and berat es kering bersih (kg).
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Kemasan ventilasi so CO₂ can escape (no airtight containers).
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Carrier rules (MISALNYA., airline package limits, often ≤200 kg per piece).
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Dokumen sebagaimana diperlukan (MISALNYA., Shipper’s Declaration where applicable).
Untuk PCM large dry ice packs, none of the above hazmat steps are required.
2025 developments and trends in large dry ice packs
Apa yang baru tahun ini: Shippers are replacing one‑and‑done CO₂ with reusable large dry ice packs + isolasi yang lebih baik. Mengharapkan eco‑friendly materials, smarter sensors with live alerts, Dan more precise PCM (tight hold at −20 °C or +5 °C) that extends duration without adding mass. These upgrades improve audit readiness and reduce total landed cost across hot lanes.
At‑a‑glance
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Greener builds: Recyclable films and reusable designs reduce waste per shipment.
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Live monitoring: Real‑time temp/humidity alerts reduce investigation time after delivery.
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Better PCMs: Longer plateaus mean fewer large dry ice packs for the same route time.
Wawasan pasar: Growth in e‑grocery and biologics is expanding validated pack‑out libraries and making higher‑grade insulation more affordable, so you can standardize SKUs and train teams faster.
FAQ
Q1: How long do large dry ice packs last?
Khas 24–48 h in EPS and up to 72 H in VIP, depending on pack mass, panas sekitar, and pre‑conditioning. Always validate with a logger on your first route.
Q2: Are large dry ice packs reusable?
Ya. Quality PCM packs are built for dozens of cycles. Rehydrate dehydrated sheets, inspect seals, and refreeze flat for full performance.
Q3: Do I need hazmat labels?
Only for CO₂ dry ice. PCM large dry ice packs are non‑hazmat and don’t require UN1845 or venting.
Q4: Are large dry ice packs safe for shipping plants?
Yes—use +5–10 °C PCM and avoid direct contact to prevent chill shock; do not use CO₂ in sealed plant boxes.
Q5: How many packs should I start with?
Line the box (all sides + atas) dengan large dry ice packs, lalu tambahkan 25–50% more for >48 h or hot lanes. Validate and tune from data.
Ringkasan & Rekomendasi
Kunci takeaways: Menggunakan large dry ice packs (PCM) for most frozen/chilled lanes; reserve CO₂ for ultra‑cold or very long routes. Prasyarat, fully freeze, line all sides, and top‑load extra packs. Validate with a logger and standardize your pack‑out per SKU and lane. You’ll reduce excursions, training overhead, and total cost.
Langkah selanjutnya (Lakukan ini sekarang):
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Pick your type: PCM large dry ice packs (−20 °C or +5 °C) vs.. CO₂ based on target temp and duration.
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Model + mengesahkan: Use the quick calculator; run a monitored pilot.
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Membakukan: Create lane‑specific SOPs and pack‑out diagrams; train the team.
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CTA: Request a pack‑out consultation and sample kit from Tempk.
Tentang tempk
We design and validate temperature‑controlled packaging—large dry ice packs, Paket gel, VIP/EPS shippers, and turnkey kits—for food, farmasi, biotek, and horticulture. Our focus: reliable hold times, simple SOPs, and measurable savings. Ask us about reusable options and data‑driven pack‑outs that fit your lanes.
CTA: Talk to a Tempk specialist for a tailored pack‑out plan
