Questions about Milk

Can you tell me more about the welfare of the cows that supply Sealtest milk?
Sealtest is part of the Agropur dairy co-operative—a co-operative of about 3,000 farmer members who are committed to ensuring the highest animal-welfare standards. Agropur strives to ensure that all members exceed Provincial Dairy Regulations, which are legislated standards relating to quality, traceability, hygiene, and animal welfare.
Can I freeze Sealtest milk?

Yes, you can freeze Sealtest milk. Cartons or bags can go straight into the freezer, but milk in jugs needs to be transferred into a suitable container. Freezing milk does not alter its taste or nutritional value, but the texture and appearance may be slightly modified. Thaw the milk in the refrigerator and shake well before consuming it. Milk can be frozen for up to 3 weeks. Once thawed, the milk must be consumed within days.

Does Sealtest get any of its milk from cows that have been given the Bovine Growth Hormone to increase their milk productivity?

No. All Sealtest milk is free from artificial growth hormones, antibiotics and preservatives. In Canada, there are strict rules governing the milk supply as well as inspections and testing at both farms and dairy processing facilities to ensure the safety and quality of our milk.

What is Sealtest Chocolate Milk?

Sealtest Chocolate Milk is an excellent source of protein and vitamin A. It is high in calcium and a good source of vitamin D, which enhances the absorption of calcium for the development and maintenance of strong bones and teeth. It also contains sugar and natural cocoa for energy and a delicious chocolate taste. Nutritious and tasty, chocolate milk—like other dairy products—is part of a healthy diet as outlined in Canada’s Food Guide to Healthy Eating.

Does Sealtest milk contain any artificial growth hormones or antibiotics or preservatives?
No. All Sealtest milk is free from artificial growth hormones, antibiotics and preservatives. In Canada there are strict rules governing the milk supply and inspection and testing both at the farms and dairy processing facilities to ensure the safety and quality of our milk.
Can I freeze Sealtest Chocolate Milk?

Yes, you can freeze Sealtest Chocolate Milk. It can go straight into the freezer for a maximum of 3 weeks. Freezing milk does not alter its taste or nutritional value, but the texture and appearance may be slightly modified. Thaw the milk in the refrigerator and shake well before consuming it. Once thawed, the milk must be consumed within days.

What is the normal shelf life of Sealtest milk?

If the carton or bag is sealed, milk will keep in a refrigerated environment—between 0 °C and 4 °C—for 18–22 days. Once the carton or bag has been opened, we recommend that it be consumed within 5–6 days. You can help extend the shelf life of your milk by keeping it cold. Pick it up as your last item in the store; if possible, carry an insulated bag to bring it home; get it in the fridge quickly; and promptly return it to the fridge after every use. Remember: milk can start to spoil after only 20 minutes in an unrefrigerated environment—so keep it cold!

What do the numbers printed on milk cartons represent?

Besides the “Best Before” date, Sealtest prints the manufacturing plant’s permit number on its cartons. The sell-by date, filling machine ID number and, in certain cases, time of production are also printed.

How can I help keep my Sealtest milk tasting fresh?

Once milk has been opened, bacteria can enter and start to turn the milk sour. By resealing the carton or folding the bag to remove air and promptly returning it to the refrigerator after use, you can keep your Sealtest milk tasting fresh.

Why is vitamin A not added to 3.25% Sealtest milk?

The vitamin A in milk is found in the fat particles. Therefore, the process of skimming milk tends to reduce the amount of vitamin A naturally present in milk. This is why vitamin A must be added to low-fat milks and does not need to be added to milk with higher fat percentages. The vitamin A added to milk is called palmitate.

Is Sealtest milk suitable for young children?
Sealtest milk can be given to children once they are weaned from breast milk or infant formula. Consult your doctor on the right time for your child to transition to cow’s milk.
Why is vitamin D added to Sealtest milk?

Vitamin D is added to milk to maximize the body’s capacity to absorb the calcium it needs to build and maintain healthy bones and teeth. A glass of milk meets 45% of your daily vitamin D requirements.

Many baking recipes require soured milk. Can I sour my own milk?

Yes! You can sour your own milk by adding one tablespoon of either vinegar or lemon juice to one cup of Sealtest milk. To ensure that your baking turns out perfectly, we do not recommend that you use any milk product that has expired or gone “off.”

Health-Related Questions

What foods are good sources of calcium?
Dairy products such as milk, cheese and yogurt are excellent sources of calcium because they contain high amounts that are easily absorbed by the body. Skim milk products have as much calcium as whole milk, with the added advantage of containing less fat and cholesterol. Salmon and sardines with bones in, tofu, and beans are also good sources of calcium.
Are all trans fats bad?

There are two types of trans fats: those that occur naturally and those that are artificially manufactured. The naturally occurring trans fats present in dairy products are not associated with health problems. The trans fats in dairy products are produced in the rumen (stomach) of cows. They are also present in small amounts in the meat of ruminant animals such as beef and lamb. Dairy fat contains very small amounts of naturally-occurring trans fats—250 mL of whole milk, 30 g of cheddar cheese, and 10 g of butter each contain 300 mg (0.3 g) of trans fat. In contrast, foods containing industrial trans fat contain several grams. A donut can contain as much as 6000 mg (6 g) of trans fat. Some studies have shown that the natural trans fats present in dairy products, like CLA (Conjugated Linoleic Acid), may be beneficial to our health and protect us from some types of cancer, such as breast cancer. Artificially produced trans fat, on the other hand, is considered the worst type of fat for the heart. Indeed, it lowers good cholesterol (HDL) and raises bad cholesterol (LDL), which greatly increases the risk of heart disease. These artificially-produced trans fats are created during a process called “partial hydrogenation” (commonly known as “hydrogenation”). Through this process, a vegetable oil is transformed into a solid fat at room temperature. Artificially-produced trans fats are found in many margarines and all vegetable shortenings, as well as the foods made with them, including many commercial snacks, baked goods, and fried foods. If you would like to know more, visit the Dairy Farmers of Canada website.

Does calcium have other benefits besides strengthening bones and teeth?
Virtually all body cells, including those of the heart, nerves, and muscles, need calcium to function properly. Calcium is essential for building and maintaining strong bones. It helps maintain a normal heartbeat and regulate blood pressure and can also help reduce the risk of high blood pressure. Calcium is important for normal blood clotting, which is essential to healing. And it helps control muscle contraction and relaxation. Some studies suggest that calcium can help prevent colon cancer in certain people. Calcium is also essential for the proper functioning of the nervous system.
How does vitamin D contribute to calcium absorption?

Vitamin D is a key factor in good calcium absorption. Along with calcium, it is essential in preventing osteoporosis and may reduce other health risks such as diabetes and immune-system disorders. While sunlight provides vitamin D, Canadians may experience seasonal vitamin D deficiency in winter because winter sunlight in northern latitudes does not contain enough ultraviolet B for vitamin D production. Milk fortified with vitamin D3 contains 100 IUs per 250 mL glass, or 45% of your daily recommended intake.

Questions about Allergies

Are any Sealtest products gluten free?

Yes, several Sealtest products are gluten free:

  • Lemonade
  • Cottage Cheese 1%, 2%, 4%
  • Sour Cream 1%, 5%, 14%
  • Milk 1%, 2%, 3.25%
  • Chocolate Milk 1%
  • Strawberry Milk 1%

Other Questions

Your question is not covered by our FAQs?

Please feel free to contact us by phone at 1-800-501-1150, or by using the Agropur's contact form.

Where can I buy Sealtest products?

Sealtest milk is widely available in supermarkets, convenience stores, mass merchandisers and warehouse clubs. If you’re having trouble finding any of our products, send us an email through the Contact Us section of our website and we’ll find a location close to you and let you know.

Questions about Butter

Does butter have more calories than margarine?

No. In equal quantities, both contain the same amount of fat and the same number of calories. For five millilitres (1 tsp) of butter or margarine, each contains 36 calories.

Can I freeze buttermilk?

Yes, buttermilk can be frozen as long as you don’t mind the separation that may occur. Be sure to thaw buttermilk in the refrigerator and gently stir or shake it to restore its texture. Once thawed, it can be used for cooking and baking.

How long will butter keep?

Salted butter keeps for 1–2 years in the freezer and up to 3 months in the refrigerator. Unsalted butter, on the other hand, keeps for 2–3 months in the freezer and 3–4 weeks in the refrigerator. It is advisable not to leave unsalted butter at room temperature.

How can I interpret the codes on the packages of your butter?

The codes on our butter break down into several parts in the following order: Example: For AGRT 3518 10:26 347 L 02, AGRT means “agreement”—this plant meets Canadian quality standards provided by the Canadian Food Inspection Agency (CFIA); 3518 is the plant’s registration number (Saint-Bruno in this case); 10:26 is the packaging time; 347 is the churn number, starting at 1 each January; L is the first letter of the operator’s last name, and 02 is the year of production (2002).

Questions about Homogenization

Is homogenization different than pasteurization?

Yes. Homogenization is the process that allows milk to have a homogeneous (uniform) consistency. If you take a litre of milk straight from a cow and place it in the refrigerator, all the cream will completely separate, leaving you with skim milk on the bottom and a layer of cream on top. To make 2% milk, you need the cream to stay suspended in the milk. Homogenization is the process of breaking up the fat globules in cream so they are small enough to remain suspended evenly in the milk rather than separating out and floating to the surface.

How did homogenization originate?

A French engineer by the name of Gaulin invented the homogenizer. The first such machine was imported into North America in 1909.

Is your milk homogenized?
Yes, our milk is pasteurized and homogenized.


What is pasteurization? does it destroy the nutritional properties of milk?

Pasteurization involves heating milk to temperatures high enough to eliminate certain unwanted bacteria while retaining the nutritional properties of milk. In most modern methods, milk is heated to 72 °C (161.6 °F) for 15 seconds or to 140 °C (284 °F) for three seconds then rapidly cooled to 4 °C (39.2 °F). It does not involve the use of any additives whatsoever. Pasteurization not only makes the milk suitable for consumption, but also increases the length of time it can be kept before it spoils.

Is pasteurization carried out for all dairy products?

Although it is carried out at different stages, depending on the product, pasteurization is a step in the manufacturing process of every dairy product except for some cheeses made with thermized milk.

What is the difference between «uht» and «htst»?

UHT (Ultra-high temperature) and HTST (High Temperature Short Time) are two pasteurization methods. The main difference between UHT and HTST milks is the intensity of the heat treatment which influences the shelf life of dairy products.

What is meant by shelf life?  Shelf life refers to the period that milk can be stored before it starts to spoil. It is influenced by several factors such as the manufacturing processes, the way the product is packaged, storage conditions and whether the product has been opened, etc.

UHT is a processing technique used to make dairy products stay fresher, longer.  UHT means that the milk is heated to about 140°C (284 °F) for around 4 seconds. This method eliminates essentially all the bacteria in milk. The average shelf life of UHT milk is 40-65 days if unopened and refrigerated appropriately. After opening, UHT milk should be kept refrigerated between 1°C to 4°C (33.8°F-39.2°F) and consumed within 7-10 days.

On the other hand, dairy products pasteurized using the HTST method are heated to about 72 °C (161.6 °F) for around 15 seconds to remove certain bacteria. Unopened HTST pasteurized milk products have a shelf life of 12–22 days.  Once opened, HTST milk should be kept refrigerated between 1°C to 4°C (33.8°F-39.2°F) and consumed within 7-10 days.