How to Keep Your Groceries Fresh with Dry Ice During Power Outages
Did you know you can keep your groceries fresh by using dry ice during power outages?
Power outages can be stressful, especially when it comes to keeping perishable groceries fresh. Whether due to storms, grid failures, or unforeseen blackouts, losing refrigeration for hours or even days can result in wasted food and costly grocery bills. Fortunately, dry ice offers an effective solution to maintain cold temperatures and preserve your food until the power is restored. Here’s how to use dry ice to keep your groceries fresh during a power outage.
Why Use Dry Ice?
Dry ice, the solid form of carbon dioxide, is significantly colder than regular ice, with a temperature of -109.3°F (-78.5°C). It doesn’t melt into liquid like regular ice; instead, it sublimates, turning directly into gas, which helps prevent water buildup and mess. This makes it a superior choice for keeping food frozen and fresh for extended periods.
How to Use Dry Ice for Refrigeration
Dry ice behaves differently from normal ice, which means you need to treat it differently to ensure your safety as well as the safety of others. Be sure to take the necessary precautions.
Determine the Amount Needed
The amount of dry ice you’ll need depends on the size of your refrigerator or freezer and how long the power is expected to be out. As a general rule:
- For a standard freezer: 20-25 pounds of dry ice can keep it cold for 24 hours.
- For a refrigerator: 10-15 pounds can help maintain safe temperatures for 12-24 hours.
Proper Placement of Dry Ice
- For Freezers: Place dry ice on top of the food items because cold air sinks. Using a thick piece of cardboard between the dry ice and food can help prevent freezer burn.
- For Refrigerators: Place dry ice on the top shelf to maintain a stable temperature throughout. Keep dairy and meat products closer to the ice to prevent spoilage.
Safe Handling and Storage
- Use Gloves or Tongs: Never touch dry ice with bare hands, as it can cause severe frostbite.
- Ensure Proper Ventilation: Dry ice releases carbon dioxide gas as it sublimates. Keep the area well-ventilated to avoid carbon dioxide buildup, which can be hazardous in enclosed spaces.
- Avoid Sealing in Airtight Containers: Storing dry ice in a sealed container can lead to pressure buildup and cause an explosion.
Monitor Temperatures
Use a thermometer to ensure that your freezer stays at or below 0°F and the refrigerator remains below 40°F. If temperatures rise above these levels, consider consuming perishable items promptly.
Extend Dry Ice Longevity
- Keep the refrigerator and freezer doors closed as much as possible to maintain cold temperatures.
- Wrap dry ice in newspaper or place it inside a cooler when not in use to slow sublimation.
- Use additional insulation, such as blankets, around the fridge or freezer to retain cold air.
When to Restock Dry Ice
If your power outage extends beyond 24 hours, you may need to replenish your dry ice supply. Check local grocery stores, gas stations, or specialized ice suppliers for availability.
Dry Ice For All Your Needs
Dry Ice Corp is the largest regional supplier of dry ice and related products in the Northeastern United States. Our ice is fresh and delivered right to your doorstep. We are happy to help you determine the best way to ship your goods, whether you have a huge amount of cookies or a single pie, and help you select the perfect amount of dry ice for the job. Give us a call at (201) 767-3200 or contact us online for a quote. To connect with us online, be sure to follow us on Facebook, Pinterest, and Twitter.
