Are Freezing and Deep Freezing Different Know the Facts
                     Are Freezing and Deep Freezing Different? 
Know the Facts
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Meta Description:
If you believed that deep freezing and freezing are similar, you are wrong. Know how deep 
freezing is different from freezing.
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Freezing is a subject that is not as simple as that appears to be. Many aspects are not only 
confusing but also call for a deeper understanding. 
One of such aspects is the difference between freezing and deep freezing. Yes, you heard it 
right. There are differences between them despite sounding similar.
So, let us explore the differences between them. 
In simple terms, freezing involves gradual temperature decreases, and deep freezing involves 
quick temperature decreases. 
It might require up to 24 hours to reach a freezing temperature, but deep freezing attains the 
same temperature within an hour.
Essentially, the difference arises in the speed at which temperature decreases. While it is fast in
deep freezing, it is slow in freezing.
Let us now explore the advantages and disadvantages of the two preservation techniques:
Freezing
It is the traditional method of preservation for extended periods. A house refrigerator performs 
this function regularly. 
The involved process is simple. Once you place an item inside the unit, it loses temperature 
gradually, and it can take around 24 hours to reach -18 degrees C. 
During the cooling process, the water on the stored items gets converted into ice crystals. For 
food items, the size of the ice crystals can negatively impact them. There arises the possibility of
the food losing freshness, vitamins, and other qualities. 
There is also the possibility of crystal edges perforating the food cell wall, which can dry out the 
food items. 
Deep-Freezing
With deep freezing, the stored items reach a temperature between -30 to -50 degrees C. It 
allows you to store fresh products, such as food items, for long periods and preserving 
nutrients. 
During the deep-freezing process, the water on the stored items is finely crystallized. As such, 
dietary fibers in food items do not break. It keeps the flavor and nutritional properties of food 
items intact. 
But, ensure that the cold storage unit you use for deep freezing works properly. Check its 
freezing capacity on the unit's datasheet, ensure that it meets your requirements, and avoid 
unwanted issues, like food poisoning. 
It will help if you keep in mind that deep freezing can lead to serious food poisoning if the 
process is not correct. So, take the necessary precautions to avoid the possibility and preserve 
the original quality of food items stored in the unit.
What are the Key Safety Precautions for Deep Freezing? 
Deep freezing can involve issues that call for the necessary precautions, such as:
Temperature Maintenance
Make sure that you cool food items to 4 degrees C before freezing them. It helps you to avoid 
increasing the chamber temperature, causing more electricity consumption. 
Once frozen, keep the items at temperatures varying from -9 to -18 degrees C, depending on 
the items. Ensure to monitor the temperature of the unit. 
Hygiene
Do not store an item that has started spoiling. Make sure you store fresh items in a deep 
freezer to preserve their qualities. 
It is advisable to adhere to the basic hygienic rules while handling items stored in a cold storage
unit. Do not be under the influence of the idea that microorganisms become dormant in low 
temperatures. It will help if you keep in mind that some microorganisms can survive such 
temperatures. 
When it comes to a laboratory freezer, you cannot escape maintaining the necessary hygienic 
practices. So, ensure that you:
● Wash your hands, items, and handling tools
● Clean the cold storage unit
● Use sealed freezer bags to keep food items
● Never refreeze an item that defrosted or during defrosting. It will spread bacteria, and 
pathogenic bacteria can cause food poisoning
Some Common Freezer Problems
You may have a freezer or deep freezer, but you will see similar problems in both types of units.
While some problems are easy to detect, others take a bit longer.
The following are the common problems:
High Temperatures
When your freezer temperature goes higher, it cannot keep the stored items in cold 
temperatures. High temperatures are indications of the thermostat malfunctioning, and that 
calls for a repair.
Frost Buildup
The cold environment in your freezer can result in a building-up of frost at times. However, 
some troubleshooting can fix the frost buildup issue.
Water Leakage
When you see water leaking out of your deep freezer, you can regard it due to issues with the 
defrost drain or condensation pan. If you see water leakage and other problems from your 
deep freezer, call up a technician to fix it.
Sounds
Some noises are normal for any freezer. But, when you hear abnormal sounds, it can be due to 
problems with the freezer fan.
Malfunctioning
If your freezer does not work, it can be due to a problem with the electronic controls or power 
flow. Call a technician to fix the problem.
Things to Do Before Calling a Technician
Before you call a technician to fix your freezer's problems, it is a good idea to check out a few 
things to fix the issue yourself. Check if:
● Stored items are blocking the vents
● The temperature is too low
● The door is open
● There is any leak on the valve