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The following table is intended to aid you in selecting 
the best phase change material for your shipment.
Phase Change
Material
Phase Change
Temperature
Recommended Use Other Considerations
Dry Ice -119°F / -80°C Products That must be kept frozen for extended periods of time. Should not be used with products which may be damaged by extreme cold. Dry ice is regulated as a hazardous material in air transport.
U-tek
-58°F / -50°C
Formula
-58°F / -50°C When extreme cold temperatures are required and dry ice is not an option.  To freeze, use dry ice or -80°C freezer. Re-usable.
U-tek
-10°F / -23°C
Formula
-10°F / -23°C Product which need to be kept frozen. To freeze, freezer must go below -10°F. Provides additional protection than standard gel packs.
U-tek
+30°F / -1°C
Formula
+30°F / -1°C Product which need to be kept refrigerated for extended periods of time. Provides additional protection than standard gel packs.
U-tek
+30°F / -1°C
Mat
+30°F / -1°C Products that must be kept refrigerated. Mat-style permits wrapping around irregularly shaped products. Helps cushion product during transit. Not messy like wet ice.
U-tek
+30°F / -1°C
Single
+30°F / -1°C Products that must be kept refrigerated. Suitable substitute for wet ice. Not messy like wet ice.
Polar Pack
Standard Gel
+32°F / 0°C Most cost effective alternative to wet ice. Available in returnable bottles.
Polar Pack
Tough Pack
+32°F / 0·C Warehouse environments where rough handling is of a concern or need for puncture resistant film. Puncture resistant.
Polar Pack
Moisture Guard
+32°F / 0·C Products which must be protected from condensation damage. Custom printing is available.
Polar Pack
Foam Brick
+32°F / 0·C Maintains shape when frozen and thawed. Ideal for tighter payloads.
Polar Pack
Hard Bottle
+32°F / 0·C Offers maximum durability while maintaining package configuration. Our most rugged refrigerant.