Glass Test Tube Manufacturer in China - SXET GLASS

Glass test tubes have been part of our best and top-selling products here at SXET for more than 12 years and counting. We’ve successfully manufactured thousands of glass test tubes annually, and we continue to do so for a select number of clients.

Custom Cut Glass Test Tube

SXET’s glass test tubes are known and considered by many clients and businesses as their primary choice for tubes, not only because of the price, but also because of the performance and reliability.

Choosing us as your glass test tube manufacturer can give you the flexibility of ordering in different sizes. We can produce them in capacities of 5ml, 10ml, up to 50ml, with lengths stretching from 110mm up to 200mm!

All our glass test tubes are focused and finished to perfection whether you want them transparent colored, or even shaded, with a smooth round bottom and a polished surface.

We can produce your glass test tubes regardless of the thickness you want them to be – just send us over a draft or a sketch of the glass test tubes you want and we’ll create them for you!

SXET’s lineup of products range from tiny glass test tubes to large glass test tubes, whichever you need! In addition to that, you can also customize the laboratory glass test tubes you can purchase; you can get clear glass test tubes or colored glass test tubes for particular applications!

All our glass test tubes can withstand high-speed centrifugation and are extremely durable. They’re also heat-resistant, oxidation-resistant, as well as have high resistance on thermal shocks.

And in case you were wondering, we use the same materials used for Pyrex glass tubes in the creation of our glass test tubes. Yes, we make OEM glass test tubes, which is enough to prove that our products aren’t very much different from the ones in the market!

Why SXET is the Best Glass Test Tubes Manufacturer

 SXET’s glass test tubes are used in a wide variety of business sectors and industries. The applications of our glass test tubes are no joke. In fact, they’re used in the chemical or chemistry industry, the medicine and pharmaceutical industry, laboratory and apparatus industry, engineering industry, and many more!

We can produce highly customized glass test tubes for you, whether you need a flat or a rounded bottom, as well as printing on the surface, if needed!

NOTE: All our glass test tubes are proven to be efficient and effective, especially for the chemical industry. We perform ultrasonic baths that cleanse and free all units from all unwanted microscopic aliens like dust, dirt, fingerprints, and unevenness.

If you’re not sure where to get high-quality glass test tubes, don’t hesitate to get it from us here at SXET Glass Co., Ltd. We can guarantee that you will never be disappointed with the quality of our glass test tubes, whatever application you may have for it.

Contact Us Today!

Reach out to us and get a free estimate of the glass test tubes you’re looking to purchase from us! Never worry about misalignment, deformed, or bad-quality glass test tubes any longer!

High temperature quartz tubeBorosilicate glass tubeColored glass tubeBorosilicate glass tubes characteristicsColored glass tube VS transparent glass tube

Glass Test Tube FAQ

Glass test tubes may seem like normal pieces of equipment, but they’re actually more valuable than you think! Here at SXET Glass Co., Ltd., we can produce extremely high-quality glass test tubes for businesses and organizations!

Want to be in on the secret? Here are a few of the most asked questions about glass test tubes!

  1. What is a Glass Test Tube?
  2. What Are Glass Test Tubes Made Of?
  3. Glass Test Tube Sizes
  4. What Are the Applications of Glass Test Tubes?
  5. Different Types of Test Tubes
  6. Fused Silica Test Tubes vs. Borosilicate Glass Test Tubes
  7. How Are Glass Test Tubes Made?
  8. Large Glass Test Tubes
  9. Glass Test Tubes For Plants
  10. Glass Test Tubes With Screw Caps
  11. Can You Print on Glass Test Tubes?
  12. Are Glass Test Tubes Shock Resistant?
  13. At What Temperatures Do Glass Test Tubes Bend? (Depends on the Type)
  14. Can You Color Glass Test Tubes?

What is a Glass Test Tube?

Figure 1: An image of a screw-capped glass test tube

A glass test tube is a type of glass material that’s traditionally used in the chemical industry. The primary purpose of these glass test tubes is to perform heating, mixing, or chemical reactions between various chemicals.

However, in today’s world, the applications and uses for those aren’t restricted to the chemical, pharmaceutical, and the laboratory industries only. Nowadays, glass test tubes are also being used in the kitchenware industry, and even the manufacturing and production industry.

In case you’re not familiar with it, they’re glass products shaped like tubes and are purposely made for holding chemicals and other types of fluids.

What Are Glass Test Tubes Made Of?

Figure 2: Glass test tubes can be made of many different types and kinds of materials that are durable, chemical and acid resistant, and durable!

Glass tubes are made from many different materials, but the most common is glass. This is so because glass is a material that is relatively resistant to chemicals, heat, corrosion, and even oxidation.

And test tubes root from quite many different types of glass, the most common of which include:

  • Quartz Test Tubes
  • Borosilicate Glass Test Tubes
  • Plastic (Acrylic Glass) Test Tubes
  • Soda-Lime Glass Test Tubes
  • Actinic Glass Test Tubes

These types of glass have different benefits and advantages, so, before choosing one, it’s necessary that you know the effects, properties, and the reactions these glass types have with various chemicals and the environment.

QUICK NOTE: Bes sure to check out any of these glass types first before purchasing to ensure that you’ll get the results you’re looking for. Quartz test tubes don’t have the same properties as acrylic glass tubes; neither do soda-lime glass tubes, too.

Glass Test Tube Sizes

Figure 3: Samples of different diameters and sizes of glass test tubes without covers or caps

Glass test tubes are sized and measured differently – even if they’re measured by reputable sources like schools and organizations. But, the general way of how they’re sized would be depending on the amount of liquid they can get, as well as the measurement of Optical Density O.D.

And among the many different sizes and measurements of laboratory glass test tubes, the following are the most common:

Test Tube Sizes8 ml Capacity (in ml) Approximate O.D. (in mm)
1 ml 7mm x 60mm
3ml 10mm x 75mm
8 ml 12mm x 125mm
13 ml 15mm x 125mm
27 ml 18mm x 150mm
38 ml 25mm x 100mm


QUICK NOTE: These aren’t the only sizes – they are only the most common sizes in the bacteria culturing or the laboratory industry. Of course, there are many more sizes available – there are even those that can hold 170ml, which measures about 38mm x 200mm!

What Are the Applications of Glass Test Tubes?

Figure 4: Glass test tubes are typically used in the laboratory apparatus and pharmaceutical industry

Primarily, glass test tubes are known and used for the mixing of chemicals and other different types of fluids, as well as for the purpose of heating or melting. That is the main reason why they’re known as “test tubes.”

As time went on, their uses and applications grew to a lot more different business sectors and industries, and their applications changed drastically.

Now, you’ll find a lot of many different uses and applications of glass test tubes. As the market dictates, the following are the business industries and sectors that make use of glass test tubes:

  • Chemical and Chemistry Industry
  • Laboratory Apparatus Industry
  • Medical and Pharmaceutical Industry
  • Lighting and Fixture Industry
  • Planting and Landscaping Industry
  • Glassware and Kitchenware Industry
  • Manufacturing and Industrial Sector
  • Engineering and Architectural Industry
  • And Many More!

These are not the only business sectors and industries where you can use glass test tubes, but these are what our clients’ businesses are, so these are the only things we can think of!

As you can imagine, we here at SXET Glass Co., Ltd. have a ton of business sectors we handle, this simply means that a lot of clients trust and bank on us for the production of their glass test tubes!

Different Types of Test Tubes

Figure 5: Sample of quartz test tubes, one of the most common materials used to manufacture test tubes

The various types of test tubes are dictated by the type of material used to create them, as well as the common sizes.

If you read back above, then you’ll find that there are quite a few different types of test tubes you can play with in the market. However, here’s a list of the different types of test tubes you can purchase in the market:

Fused Silica Test Tubes

Probably the most common type of test tubes that are purposed for long-term stability. These are the most common type of test tube used in engineering applications. They need to have long-term thermal stability, which means they need to be durable and strong.

Borosilicate Test Tubes

Borosilicate glass test tubes are the most common in applications and situations that require chemical and shock resistance, making them a perfect fit for chemical or chemistry industry-related applications. They are test tube types that are rarely corroded and oxidized.

Quartz Test Tubes

Quartz is known for the excellent resistance to thermal shock, as well as high infrared (IR) radiation transmission. Similar to borosilicate glass tubes, quartz test tubes are also highly chemically and thermally resistant.

Metal Test Tubes

Metal test tubes are used in applications and industries where 0 levels of water absorption are needed, primarily applications on wood, foam, and even plastic. In terms of durability and strength, they also beat glass test tubes to the brim!

Ceramic Test Tubes

Lastly, ceramic test tubes are used in applications that require thick walls, which paves way for excellent heat and chemical transfer. They’re not ideal for use in the chemical industry, though, because scientists and professionals wouldn’t be able to see through them.

These are among the most common of the many different types of test tubes in the market. They’re not all made from glass, but there are specific purposes for that.

Now that we know about the different types of test tubes according to material, let us now briefly discuss the difference between the two (2) most common types of test tubes: borosilicate test tubes and fused silica test tubes.

Fused Silica Test Tubes vs. Borosilicate Glass Test Tubes

Figure 6: An example of a borosilicate glass test tube purposely made for the chemical and medical industry

Both are extremely durable materials, but they have distinctions and differences in terms of usage. So, to help you with it, here’s a table that outlines the difference of both materials when it comes to test tubes.

Fused Silica Test Tubes Borosilicate Glass Test Tubes
Fused silica test tubes are clearer because they contain pure amounts of SiO2. Borosilicate glass test tubes have 13% boric oxide, 3% aluminum oxide, and 4% sodium oxide, making them less clear.
Fused silica products are inert, which makes them highly resistant to chemical reactions. Borosilicate glass units also have excellent levels of chemical resistance.
Does not perform well under thermal shock. Contains excellent levels of thermal shock resistance.

These are among the most technical things that differ borosilicate glass test tubes from fused silica test tubes. They wouldn’t matter in a general sense, but if you look at it in a technical and a deeper sense, they’re extremely not like each other.

How Are Glass Test Tubes Made?

Figure 7: Glass test tubes are made similar to all other types of glass, the main components are melted and are molded into tubes

The process of creating glass test tubes is actually easy. Usually, the process will be taken from how they’re formed before they are glass.

QUICK NOTE: But, in our business, here is how we make and manufacture glass test tubes.

  1. The glass material is sent to us, usually in larger rods, tubes, and sheets.
  2. From those shapes, we take what the required length, size, and forms are from our clients.
  3. Then, we create a mold that we will use for the glass test tube.
  4. The primary glass type will be heated until it becomes and transforms to its molten form.
  5. After that, the mold will be injected into the molten glass, following its form.
  6. The newly formed glass is cooled down until it’s stronger.
  7. To polish and perfect the shape, the test tubes are then heated to accurately follow the shape that the client asked for.

From this, the products will be tested and examined for anomalies and inconsistencies. After so, they’ll be packaged and sent to the respective offices and plants of the clients.

This is from our manufacturing process, of course, other laboratory glass test tube manufacturing companies could have other methods and processes of creating their test tubes.

Large Glass Test Tubes

Figure 8: An image of a large-diameter test tube

SXET Glass Co., Ltd., being the best and most famous glass test tube manufacturer in China, can guarantee you not only standard-sized test tubes, but also large-diameter glass test tubes! As long as the product is within our requirement, we will not hesitate to help you with it! We’ll give you the guarantee and assurance that the large glass test tubes you’ve always wanted will be delivered in the fastest and swiftest ways we can!

Glass Test Tubes For Plants

Figure 9: Glass test tubes that can be used as pots for plants

As we mentioned earlier, the orders we get for glass test tubes aren’t just limited to the chemical industry. In fact, we get a lot of other requests for other applications of glass test tubes, too – including glass test tubes for plants! Some clients ask for them like in pots, and they’ll sell it at higher prices, but we can also produce glass test tubes for plant experimentation, testing, and assessments!

Glass Test Tubes With Screw Caps

Figure 10: Glass test tube with a screw cap for security and protection

SXET is also skilled and capable of producing glass test tubes with screw caps. These are primarily used in the chemical industry to avoid overexposure of whatever chemicals are included in a specific test tube. So, if you’re involved in the chemical industry and you need a more secure and safer glass test tubes, you can purchase our screw cap-equipped glass test tubes!

80ml Glass Test Tubes

Figure 11: 80ml glass test tubes in different sizes equipped with screw caps

These are probably the most common size we get. They’re perfect for assessments, experiments, blood tests, and even in certain applications where samples are required. The great thing about 80ml glass test tubes is that it’s a general size, which can be used in many different business industries and sectors!

Can You Print on Glass Test Tubes?

Figure 12: High-definition glass test tubes with prints

Yes, it is possible to print on glass test tubes. In fact, most brands like Pyrex want measurements on the outer part of the test tube to allow easier and more convenient usage for the clients.

Here at SXET, we print on test tubes using screen printing. This is the easiest, fastest, and most accurate way of printing contents on the surface of test tubes. This allows better and maximum flexibility to the measurements.

Are Glass Test Tubes Shock Resistant?

Most glass test tubes manufactured are temperature resistant, but that is not the case when it comes to shock resistance. Borosilicate glass test tubes are the only types of test tubes that guarantee both thermal and chemical shock resistance because they’re specifically made for chemical applications.

They’re thick-walled, and they’re engineered to withstand unwanted and unplanned chemical reactions.

However, regular soda-lime glass test tubes, and even quartz tubes could not give you this guarantee. To cut things short, no, not all glass test tubes are shock resistant. Their state of shock-resistance will actually depend on the type of material used for it.

At What Temperatures Do Glass Test Tubes Bend?

Different types of glass test tubes have different softening points, so there wouldn’t be one (1) answer to this. So, to help you, here’s a list of the various materials used for glass test tubes and the temperatures needed to bend or form them.

  • Quartz Test Tubes – 1683 °C
  • Borosilicate Test Tubes – 825 °C
  • Soda-Lime Glass Test Tubes – 726 °C

These are the primary softening points of these materials that you can use as information on how high the temperature needs to be to be able to bend them.

Can You Color Glass Test Tubes?

Yes, akin to other types of glass test tubes, you’ll find it easy to color glass test tubes, regardless of the material type you’re using for them.

Colored test tubes are usually a part of the manufacturing procedure and is done prior to the finishing or the polishing of the test tubes.

Here at SXET, we perform the coloring of the test tubes before they’re sent out for polishing or finishing. We maximize it so that there will be no area of the test tubes are left uncolored or transparent!

Need help in producing mass glass test tubes? Work with us at SXET Glass Co., Ltd., and we will gladly manufacture all the glass test tubes you need. Not only will you get them on time, but we can also ensure promising quality of these glass test tubes!

We work 24/7, so expect a response to your inquiry in just a few hours after you made the message, or you initiated the call!

Call us or email us and we will grant you a free quotation of your inquiries. Have safe business with SXET Glass Co., Ltd., and never be ripped off ever again! Whatever type, shape, style, and print you want on your glass test tube, we’re a call or an email away!

Never hesitate to contact us for all the glass test tubes you may need for your business!

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