Free lab report · 6 pages · PDF
Water vs. gel cold packs: the 72-hour lab test
We packed two identical shippers, one with Relo water cold packs and one with gel packs, and ran them through 72 hours of cold, warm and hot cycles at an independent lab accredited to ISO/IEC 17025:2017. Request the full results.
72 h
Water kept the payload under 40°F the whole test
38.5°F
Water at hour 72. Gel was at 40.3°F
20 lb
Of coolant in each box. Only the coolant changed
What's inside
The full 72-hour temperature curves and hour-by-hour data
The pack-out, probe placement and ambient profile used
What the results mean for your own shipper
Request the report
Made for packaging, food and pharma teams. We email the PDF within two business days, after a quick review.
Inside the report
Built for packaging and cold chain teams who need the numbers
Key findings
Both temperature curves on one chart, against the chamber profile.
Test setup
Shipper, payload, coolant weights, conditioning and probe placement.
Hour-by-hour results
Chamber, water and gel temperatures from hour 0 to hour 72.
What it means for you
Where water gives you more margin, and how to test it in your own box.
Independent
A third-party lab ran the chamber and logged every reading.
Accredited
ISO/IEC 17025:2017 by A2LA.
Like-for-like
Same box, same payload, same 20 lb of coolant. Only the coolant changed.