Temperature Regulations in Restaurant and Food Delivery

In the food and hospitality industry, there are countless regulations you have to maintain to stay up to code. Some of the most important of these, however, include those related to food safety. If you’re not following these regulations, the food you serve or deliver can make customers sick. For cold foods, 40℉ or above is the danger zone. It takes as little as 20 minutes for bacteria to double their numbers on susceptible foods. 

What can you do to keep food safe and prevent food waste?

Food Storage Guidelines

Food that needs to either be refrigerated or frozen should never be left at room temperature for two hours or more. While that is a solid guideline, that doesn’t guarantee the absence of bacteria. 

Restaurant cold storage

Raw, uncooked foods aren’t your only area of concern, either. According to the USDA, “One of the most common causes of foodborne illness is improper cooling of cooked foods. Bacteria can be reintroduced to food after it is safely cooked.” That means that even your prepared food isn’t safe from bacteria and pathogens. 

Any susceptible food needs refrigeration at 40 degrees fahrenheit or below. However, if the food is intended for frozen storage, it should be kept at 0 degrees fahrenheit. 

Dry storage is another concern for restaurants and food providers. Even the pantry needs stable, regulated temperatures between 50 and 70 degrees fahrenheit. Not only that, but dry storage should have a humidity level of 15% or lower. 

All food should have a clear marking with expiration dates, whether opened or not. If food packages are opened or contain prepared foods, the package should be dated as to when it was opened or prepared. 

Maintaining Proper Food Storage

It’s not a new concept that food expires more quickly in improper conditions. However, you might not always know if your food is in poor shape until it’s too late. Food services should keep thermometers in cold storage (such as refrigerators and freezers) as well as their dry storage areas. However, when it comes to dry storage, it’s also important to monitor humidity. Most businesses do this by using a hygrometer (a device that measures relative humidity, or RH). 

For Restaurants

Thermometers, hygrometers, and meat thermometers are the basic tools that restaurants use to maintain their food storage. However, these also need some human intervention. An employee has to check the devices to record temperatures. These devices also won’t tell you if there’s an issue in between the times they’re checked. 

For Food Suppliers

Restaurants rely on food suppliers to deliver their most important stock: their food. That means that if food suppliers fail, so do the restaurants they’re working with. For food suppliers, maintaining proper food storage conditions is just as important as it is for restaurants. However, these suppliers also have to deal with the complications that arise when shipping that food. Many logistics companies use the same basic tools that restaurants do to monitor their storage conditions: thermometers and hygrometers. Much like with restaurants, the problem with these tools is that you won’t know if there’s a problem until it’s too late. 

Updating Tools for Safety and Efficiency

Thermometers, whether analog or digital, are solid tools for measuring temperature. However, because they rely on people to check them, there’s a lot of room for error. When it comes to food safety, there really isn’t any margin for error. Digital thermometers are certainly an upgrade from the traditional types, as long as they’re regularly calibrated. Hygrometers are much the same.

Regulations on how often food storage temperatures vary. When working with the food, it’s a common recommendation that you check no less than every four hours, although two hours is optimal. When food is in cold storage however, the regulations are much like those for refrigerated vaccines: you need to verify the temperature at least twice per day (meaning at the beginning and ending of the day). 

If you check only twice a day, there are plenty of opportunities for food to remain in the ‘danger zone’ and ultimately spoil. You might chance upon a temperature issue when you check your thermometer. However, there’s an even greater chance that cold storage equipment can fail to maintain temperatures, and go unnoticed.  Even in food transport, this is a risk. You should check food packages before loading, and after unloading. Again, this still allows some room for improper temperatures. 

What to Use Instead:

New technology means that we no longer need to rely on the classic thermometer or hygrometer. It also means that we don’t need to designate someone to check and record food storage temperatures. 

What should you use instead?


A smart, efficient sensor. 

The Neo sensor is an ideal example. With a single device, you can keep an eye on temperature and humidity all day, without any effort on your part. This sensor can measure temperatures from as low as -40 degrees fahrenheit up to 158 degrees fahrenheit. It works to measure up to 100% relative humidity, and stores logs, whether or not you connect it to the iMatrix cloud system. The Neo is ideal for TCS (temperature control safety) storage, whether you keep it in your food freezer, refrigerator, or in dry storage. 

iMatrix Neo temperature humidity sensor
The Neo sensor provides an end to end solution for food safety

What about food suppliers?

Luckily, the Neo sensor works just as well during transport as it does in restaurant food storage. As we mentioned, you don’t need a wireless connection for the sensor to take and store readings. When your food reaches the destination, take the sensor out, and connect it to the cloud system. Within moments you have a complete log of the conditions throughout your food package’s journey at your fingertips. This is especially crucial for food suppliers that must prove they maintain suitable conditions, both for the restaurants they supply, and their local regulatory bodies. 


Getting a temperature and humidity reading every minute far exceeds the recommendations to check food storage twice a day. Not only that, you also don’t have to rely on an employee to diligently check conditions. In the end, you save time, money, labor, and ultimately, valuable food stock.