A modern borosilicate glass teapot with blooming tea flowers on a white table with a glass teacup, fresh flowers, and delicate pastries.

Why 3.3 Borosilicate Glass is Remarkably Better

The best glass teapots are made with 3.3 borosilicate glass. When it comes to sustainability and durability, there is no other material like it — especially for modern teaware. 

Teabloom chose this specific glass as its main teaware material for more than just looks. Yes, glass makes gorgeous pieces that fully allow you to take in the beauty of blooming tea flowers. More importantly, this specific kind of borosilicate glass was chosen for its health benefits, durability, and chemical-free properties. 

Did you know there are different kinds of borosilicate glassware on the market? Not all borosilicate glass teaware is the same quality. Teabloom’s teaware stands apart from the rest because they chose the best quality borosilicate glass for their products. 

Today, you’ll discover what makes borosilicate glass so incredible and the difference between borosilicate glass grades. By the end, you’ll feel confident you’re choosing the best glass teapot for your needs.

Uses of Borosilicate Glass

A 3.3 borosilicate glass casserole dish filled with a warm and cheesy entree on a white planked table with a plate, checkered napkin, and fresh pink flowers.

You’ll hear about borosilicate glass being used in laboratory equipment and cookware most often. It’s a versatile material that’s also used for lighting, high-precision optical components, space exploration, sight glasses, and even implantable medical devices. 

But, not all borosilicate glass is the same. When deciding on the material to make the best glass teapots, Teabloom chose the best quality — 3.3 borosilicate glass.

What is 3.3 Borosilicate Glass?

A woman scientist in white scrubs with protective glasses holding and looking at two 3.3 borosilicate glass beakers with green and blue liquid.

Even within the borosilicate glass realm, there are variations in stability and material composition. Not all borosilicate glass is exactly the same. The 3.3 version is more chemical and thermal shock resistant than others. 

Other kinds of borosilicate glass include 4.9 and 5.4 expansion — classified as type 1 class B — which are still very nice quality but not as high as the 3.3 version — which is classified as type 1 class A — according to these charts

3.3 borosilicate glass has enhanced properties, making it a little more expensive than other kinds of borosilicate glass. But, when it comes to teaware, Teabloom’s collections are still much more affordable than your average porcelain, clay, and fine china sets. They are also healthier teaware alternatives to these standard materials.

The higher-quality 3.3 borosilicate glass has lower levels of CTE which means it expands and contracts very little compared to other borosilicate glassware. Because it’s so durable and stable, it’s most commonly used in laboratory settings. Resistance to both high and low temperatures is crucial in these environments — and it makes a fantastic material for hot and iced teaware.

Teabloom doesn’t compromise when it comes to making the best glass teapots. Quality and durability are key in their designs and teaware material composition. From the beginning, their teaware needed to be made as responsibly and ethically as possible — and this practice continues today.

Not only is 3.3 borosilicate glass thermal shock resistant, but it has excellent chemical resistance. This means it won’t deteriorate when coming into contact with acids, bases, and other chemicals. It’s so stable and chemically pure that it’s even used to store nuclear waste. 

This means teaware from Teabloom lasts a very long time. It’s also stain-resistant and doesn’t hold odors, unlike other kinds of teaware. You’ll taste nothing but the purest flavors of all your teas.

Borosilicate Glass 3.3 Temperature Range

One of the best glass teapots and tea cup sets filled with blooming flower tea and surrounded by white hydrangeas in a room decorated with white.

One of the most notable qualities of this kind of borosilicate glass is its ability to handle incredible temperatures. This is why it’s commonly used within the pharmaceutical industry and laboratories. Teabloom uses it to make the best glass teapots and teaware you can find for both hot and iced tea.

3.3 borosilicate glass used for Teabloom’s teaware can withstand temperatures up to 500° F for short periods of time. According to laboratory studies, working within the 392 to 572° F range is permissible. With the ability to handle such high temperatures, the process of boiling water and steeping tea is easy, safe, and worry-free. 

Borosilicate glass is also ideal for very cold temperatures. You will find scientists working with borosilicate glass at low temperatures ranging from -176° to -377° F. This makes steeping iced tea or flash-chilling your hot tea effortless.

Is Borosilicate Glass Breakable?

Dark blush iced tea in a 3.3 borosilicate glass cup and pitcher on a white stand with a canister of loose-leaf tea.

Yes, even the best glass teapot made of borosilicate glass is breakable. But, 3.3 borosilicate glass is far more resistant to cracking, breaking, and shattering than other kinds of borosilicate or lime glass. 

Teabloom’s higher-quality borosilicate glass can withstand the widest range of extreme temperatures. You can flash-chill hot tea without the risk of your tea pitcher breaking from the sudden temperature changes. You can also use it in the dishwasher, microwave, and even the freezer.

Like all glass, borosilicate will still break if dropped from high levels. It can also break if it’s hit with a strong impact. 

It’s always a good idea to treat your glass teaware with care, even though it is a stronger material compared to other kinds of glass.

Can You Refrigerate Borosilicate Glass?

A 3.3 borosilicate glass tea pitcher is placed in the refrigerator.

Are you a fan of iced tea? We love drinking these chilled iced tea recipes all year round — and we use the best glass teapots and pitchers to bring them to life. 

When it comes to iced tea, 3.3 borosilicate glass teaware is your ideal choice. You can boil your water directly in your teapot or pitcher. You can also steep your tea and ice it all in one vessel. 

One of our favorite ways to make chilled tea is using the cold brew method. Measure about 2-3 teaspoons for every 1.5 cups of water you’ll steep. Using room temperature or chilled water, steep your tea leaves in your teapot or pitcher overnight in the refrigerator.

Steeping the leaves with the cold-brew method prevents hot water from releasing bitter tannins into your tea. This is something you might experience with over-steeped iced tea. But, with the cold-brew method, you’ll have a perfectly-steeped chilled tea with a more well-rounded flavor. 

To learn about different steeping methods, take a look at our blogs, below. Learn how to make every version of tea and herbal blend using the best glass teapots and tea pitchers:

How to Make Black Tea

How to Make White Tea

How to Make Green Tea

How to Make Oolong Tea

How to Make Herbal Tea

How Do You Clean Borosilicate Glass?

An overhead view of one of the best glass teapots with a ribbed pattern next to a glass teacup on a stand with pink succulents and pastel-colored pastries.

Borosilicate glass is non-porous and you want to keep it that way. Using abrasive materials like metallic scrubbers or harsh sponges can scratch the surface of the glass. These porous scratches can harbor bacteria, odors, and flavors that will change or ruin your tea flavor. 

To maintain the best glass teapots and teaware, use soft sponges or even a soft cloth to wipe the surface of the glass. You can wash it in hot water and use mild soap and a soft cloth to wipe and dry. For the rare, stubborn stain, use a splash of vinegar and a cloth to buffer it away.

Tip: To get that extra sparkling shine, use a microfiber towel or a wine glass polishing cloth to dry your glasses.

3.3 borosilicate glass is dishwasher safe, as is stainless steel. For an easy cleanup simply pop your glass teaware in your dishwasher. For a completely odor-free finish, use dishwasher cleaner without scents or unnecessary chemicals. 

You can learn more about how to clean borosilicate glass teaware here.

Where to Find the Best Glass Teapots and Teaware

One of the best glass teapots with a blooming tea flower on a glass warmer surrounded by tarts, tea accessories, and flowers.

For the best teaware made with premium 3.3 borosilicate glass, Teabloom has you covered. They’ve been on a mission to clean up the tea industry one borosilicate glass tea cup at a time. Teabloom has the most expansive collection of borosilicate glass teaware on the market.

They also work ethically and closely with tea plantations to create high-quality USDA-certified organic teas that are healthy and delicious. Many of their teas come in sustainable and compostable tea sachets — a fantastic alternative to combat the major issues in the international tea bag industry. Their teas are made in small batches, with the finest ingredients, which preserves their quality and freshness.

Elevate your tea routine with healthy and durable teaware hand-crafted from the finest borosilicate glass. At Teabloom, you’ll find the best glass teapots and teaware available. Explore their collections, today.

www.Teabloom.com