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Source: https://dryice.co.za/newsletter/winter-dry-ice-guide/
Title: Why Dry Ice Is Essential During Winter | Cold Chain Guide
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Why Dry Ice Is Still Essential During Winter 

Many people assume colder weather means refrigerated products no longer require cooling. In reality, frozen food, meat, pharmaceuticals and other temperature-sensitive products still require reliable temperature control throughout winter. Dry ice helps maintain safe temperatures during transport, storage and power outages. 

Is Dry Ice Needed During Winter? 

Yes. Winter temperatures alone are not cold enough to safely preserve frozen or refrigerated goods. Dry ice maintains consistently low temperatures during transport, storage and temporary power interruptions, helping protect food quality and product safety. 

View our July Newsletter 

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Winter Weather Does Not Replace Refrigeration 

Ambient temperatures fluctuate 

Vehicles warm quickly 

Sun exposure 

Food safety regulations 

Cold chain management 

Why Dry Ice Works Better Than Ice 

Dry Ice Regular Ice -78.5°C 0°C No water Melts into water Longer cooling Shorter cooling Better for frozen transport Better for drinks 

Winter Uses for Dry Ice 

Transporting Frozen Food 

Frozen products must stay at the correct temperature from storage through delivery, making reliable dry ice for cold transportation essential for maintaining quality, safety, and shelf life. Insulated packaging, dry ice, and refrigerated vehicles help keep products frozen, preventing thawing, bacterial growth, and spoilage so they arrive in good condition. 

Hunting Trips 

Dry ice is commonly used on hunting trips to keep harvested game meat frozen while it’s being transported. Unlike regular ice, it doesn’t melt into water, so the meat stays dry and cold for longer. This helps reduce the risk of spoilage and keeps the meat in good condition until it can be processed or placed in refrigeration. 

Fishing 

Dry ice is a practical choice for fishing trips because it keeps freshly caught fish frozen for longer without creating the meltwater that comes with regular ice. Since it turns directly into gas, the fish stays dry and cold during transport. This helps preserve its freshness and texture, especially on long fishing trips or offshore outings. 

Borehole Power Outages 

Dry ice is a reliable way to keep food and other temperature-sensitive items cold during power outages , provided it is stored and handled correctly. It works well when freezers stop running because of a borehole power failure or backup system failure. Unlike regular ice, dry ice turns directly into gas instead of melting, so it keeps coolers and freezers cold without leaving water behind. This helps protect frozen food, medication, and other perishables until the power is back on. 

Medical Transport 

Dry ice is commonly used to transport temperature-sensitive medical supplies, including vaccines, laboratory samples, blood products, and certain medications. Its extremely low temperature helps keep these items frozen throughout the journey without leaving behind water or residue. This supports the cold chain, helping ensure medical supplies remain safe and effective until they reach their destination. 

Events & Special Effects 

Dry ice is often used at weddings, concerts, theatre productions, and other events to create a thick, low-lying fog effect. The fog stays close to the ground, adding atmosphere without leaving behind residue. Unlike many smoke machines, dry ice fog dissipates naturally and is less likely to trigger smoke alarms when used correctly. 

Frequently Asked Questions 

Does dry ice last longer during winter? 

Yes. Dry ice usually lasts longer in colder weather because it turns into gas more slowly. Storing it in a well-insulated cooler, away from direct sunlight and heat, will help it last as long as possible. 

Is dry ice better than regular ice? 

It depends on what you need it for. Dry ice is much colder than regular ice, so it keeps items frozen instead of simply chilled. Because it turns directly into gas, it doesn’t leave behind meltwater, making it a good choice for transporting frozen food, medical supplies, and other temperature-sensitive items. 

Can dry ice keep meat frozen? 

Yes. Dry ice is commonly used to keep meat frozen during transport, hunting trips, fishing trips, and power outages. Its extremely low temperature helps keep meat frozen for longer when it’s stored in a well-insulated cooler. 

How long does dry ice last? 

How long dry ice lasts depends on how much you have, how it’s stored, and the surrounding temperature. As a general guide, 5 kg of dry ice can last around 18 to 24 hours in a quality insulated cooler. Larger quantities stored correctly can last several days. 

Is dry ice safe inside a cooler? 

Yes, as long as the cooler isn’t completely airtight. Dry ice releases carbon dioxide gas as it sublimates, so the cooler needs to allow the gas to escape. Follow appropriate dry ice safety guidance and never store dry ice in a sealed container, as pressure can build up and rupture it. 

Can dry ice be used during load shedding? 

Yes. Dry ice is a practical way to keep food, drinks, medication, and other perishables cold or frozen during load shedding and power outages. It helps maintain safe temperatures without electricity and doesn’t leave behind melted water, making cleanup much easier. 

We can deliver dry ice all over the country thanks to our network of retail depots in most provinces. Find a retail store near you on our Store locator page. 

We deliver to Cape Town, Johannesburg, Durban, Pretoria, Port Elizabeth, Soweto, Bloemfontein, East London, Sandton, Midrand, Middelburg, Witbank, Nelspruit, Upington, Kimberley, Rustenburg, Potchefstroom and Polokwane 

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We have a range of dry ice blasters available for sale. We can also service and repair your blaster. 

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Dry Ice International has been recognised as the leader in dry ice manufacturing, distribution and dry ice blast cleaning in South Africa, as well as other parts of Africa since 1994. 

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