Until now, laboratory glass tubes have been the most familiar tools in the laboratory. It is not difficult to see them containing various chemicals for qualitative and quantitative analysis or chemical reactions. Therefore, choosing the right laboratory tube is a very important and useful task. This is because it not only affects the effectiveness of biochemical research but also ensures safety in the laboratory. Let’s explore how to choose them effectively in the article below.
What is a Laboratory Glass Tube?
Laboratory glass tubes
A laboratory glass tube is a type of test tube made of glass, used to hold chemicals in the laboratory. It is a device used to connect other laboratory equipment. These test tubes can be cut, bent, or elongated depending on the user’s purpose. Whether the chemical reactions create a safe new product or not depends on the quality of the glass tube.
Common Types of Laboratory Glass Tubes in the Market
Common types of laboratory glass tubes
There are two main materials used to make laboratory glass tubes: Flint glass and Borosilicate glass. These can also serve as a basis for classifying test tubes. Here’s how to distinguish between the two types:
- Laboratory Glass Tubes Made from Flint Glass:
Flint glass is found in silica deposits with high purity and is used to produce lead glass. Originally, flint glass was a leaded glass containing anywhere from 4% to 60% lead oxide. Modern versions of this material tend to contain much lower levels of lead. This is the most commonly used type of glass in laboratories because it softens at low temperatures, such as those produced by a spirit lamp or flame. Additionally, it is very easy to work with and inexpensive.
- Laboratory Glass Tubes Made from Borosilicate Glass:
This type of laboratory equipment is made from borosilicate glass, which is a high-temperature resistant glass made from a mixture of silica and boron oxide. Pyrex is a well-known example of borosilicate glass. This type of glass should not be exposed to hot alcohol or hot gases.
Borosilicate glass is more expensive and is not commonly used in chemical laboratories. However, it is widely used in schools and commercial laboratories due to its chemical properties and thermal shock resistance. Borosilicate glass has a very low thermal expansion coefficient.
LABORATORY GLASS TUBES AND WHAT YOU MIGHT NOT KNOW?
How to Choose a Laboratory Glass Tube?
Criteria for Choosing a Suitable Laboratory Glass Tube
In addition to considering the chemical composition of the glass tube as mentioned in section 2, we can also choose based on other factors. You can purchase this laboratory equipment in different lengths, wall thickness, inner diameter, and outer diameter. Usually, the outer diameter is an important factor because it determines whether the glass tube will fit into another connection in your setup. The most common outer diameter (OD) is 5 mm. However, you should check the stopper before purchasing, cutting, or bending the glass.
In particular, customers need to be cautious when selecting a reliable supplier or reputable manufacturers of test tubes, especially those from Japan or Taiwan. This is because they are of high quality, durable, and help save investment costs. Avoid purchasing products from China, as although they are cheaper, they are of lower quality and less safe.
Conclusion
From the information provided in the article above, we believe that customers can now understand the necessary knowledge about this useful laboratory tool. The questions: What is a laboratory glass tube? What are the common types of laboratory glass tubes? How to choose the right laboratory glass tube? Have all been answered in detail. Therefore, Lab Cường Thịnh hopes you will make the best choice for your needs.
Cường Thịnh Chemical Company specializes in providing genuine, high-quality laboratory glassware at the most competitive prices in the market. Don’t hesitate, call us now at our hotline: 093.131.9988 for advice and support regarding laboratory glass tubes.
