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An Overview of Laboratory Tubes

Working in a laboratory setting requires you to have one of the most useful glassware of all, which is the test tube. Laboratory supplies companies produce a lot of these finger-like glasswares or tubing for various reasons. They are open at the top and closed at the bottom to primarily hold an amount of liquid or solid inside for storing, heating, mixing, and observing. Here are some fascinating ideas you should know about the test tubes.

Used for Storing and Heating

People use test tubes to contain various substances in general chemistry. They resist heat and corrosion because they are made with borosilicate. This material is highly expansion-resistant, and thus, makes the test tubes a suitable receptacle for substances that you want to heat. You can do this by holding it using tongs over an alcohol lamp or a Bunsen burner.
You can also use them to store bioscience cultures and samples. Laboratory chemical suppliers can provide you with tubes that come with rubber stoppers for this purpose.

Used in Experiments That Capture Gas

With the help of a rubber stopper with a hole in the center, you can insert a glass or plastic tube for capturing gas and vapor in electrolysis experiments. For example, you can use test tubes to produce small distilled samples of a substance or to isolate solid parts from liquid and gas.

Different Shapes and Sizes

Test tubes also come in different sizes. The diameter and the length of the glass tube vary, along with the type of lid that you need for a project. There are also types that have flared lids to allow you to pour substances while minimizing wastage. If you’re a lab scientist, you might want to invest in test tubes that have similar lengths (150-200mm) for convenience and to make them all fit in a rack uniformly.



A laboratory equipment supplier can also provide you with test tubes that you can use to separate particles from a solution using a centrifuge. These tubes specifically fit the type of centrifuge that you have in the lab and are used in various kinds of laboratories as well.

Lab Culture

Scientists also use test tubes to culture tissues, bacteria, living organisms like plants (as in cloning), fungus, and more. People typically use test tubes horizontally to maximize the surface for this type of purpose. These tubes are usually made of PP (polypropylene) plastic or high-grade borosilicate material so that they can undergo pasteurization and sterilization procedures without a hitch.

Hold Samples of Physiological Fluids

Vacutainers or small glass tubes with color-coded caps are used to hold physiological fluid samples. Each glass is designed to collect and contain a specific type of additive to ensure the integrity of the sample.

Some laboratory glassware supplies may also end up as pieces of arts and crafts projects. People use test tubes in many ways, and these are only some of the interesting uses for them.