Graduated Test Tube, What is it, Price, and how to choose it?

November 2, 2021

The graduated cylinder is one of the most widely used laboratory instruments of all, especially because despite being simple and just one piece, it has incredible characteristics that allow it to be taken into account at all times as one of the most necessary tubes for testing. time to run some experiments.

In itself, what this instrument does is that it measures the volumes of any type of substance , which speeds up any procedure and helps maintain precision during it, achieving optimal results at all times. In addition, despite being delicate for its creation material, it is easy to carry, move and use since its weight is minimal and its uses are greater. In general, graduated cylinders are instruments that have been known from high school laboratories, so thousands of people have seen one of them at least once in their lives.

This instrument is suitable for use with both liquids and gaseous solutions, which facilitates its use at all times. We will now explore this valuable laboratory instrument in detail.

What is a graduated cylinder?

As we mentioned before, the graduated cylinder is responsible for measuring the volume of substances, both liquid and gaseous , which facilitates handling a higher level of precision in terms of the results of the procedure that is being carried out.

Thanks to its cylindrical shape and its base, this allows us to keep the solutions in the same place without modifying their measurement since movements do not affect the results as long as they stop. That is, once the volume of the substance has been accurately measured, it will remain within the graduated cylinder at all times without modifying its volume, unless the substance evaporates.

The above explains that in addition to making the pertinent measurements, this basic instrument also allows substances to be kept without problems for as long as necessary, which is achieved thanks to its elongated shape. Its name arises thanks to the entire scale of volumes that is drawn in the external area of ​​it.

Characteristics of the graduated cylinder

Do you think that because it is just a cylindrical tube, it does not have broad features and characteristics? On the contrary, because thanks to them, the graduated cylinder is one of the most important basic laboratory instruments of all. Its main characteristics are the following:

  • It has an elongated cylindrical shape that has a wider base that allows you to keep it stable on a flat surface.
  • It has a spout in the upper area that allows you to pour substances without problems or spills.
  • On the outside of the cylinder, the graduation that allows the measurement of substances is observed.
  • They are available in both glass and plastic and are not usually too precise when making quick measurements. The human eye is the one that must remain precise in these cases.
  • Its structure is transparent, which facilitates its use at all times. It starts from 0 milliliters, until it reaches the upper zone of the stop in the measurement, which will depend on its size.
  • The largest number of measurement that is achieved in the test tubes is 2000 milliliters.

How does the graduated cylinder work?

Its function is simple at all times, since it does not have any type of adapted mechanism inside that produces the results. It is easy to use and its mode of use is comfortable. Its measurement method is in the external area of ​​the cylinder so you can obtain the results quickly. However, keep in mind that you must clean the cylinder with distilled water before placing any type of substance, as otherwise this could interfere with the results.

Finally, you will have to make use of the substance that you need to measure and pour it into the cylindrical tube in a calm way, until you reach the measure you need for your procedure. If you exceed the desired measure, you just have to return the substance to the main container . Keep in mind that the maximum measurement capacity of each graduated cylinder is marked in the visible area, so if you exceed this measurement, you will lose the precision of the result.

Once you have achieved your result, you must make use of your sample and if you have to measure another type of substance, you will have to wash the test tube very well before using it again. If you have a single cylinder and you need to continue measuring, place the already measured sample in another instrument and always keep it with the correct measurements noted. If the substance to be measured is gaseous, you will need to cover the cylinder to prevent the sample from leaking.

What is the graduated cylinder for?

The graduated cylinder works for the measurement of volumes that are taken into account as large, since being microliters it is impossible for this instrument to make exact and precise measurements, so other more specific instruments will have to be used.

Commonly, the graduated cylinder works in a simple way by keeping liquids inside it, preferably for reduced periods of time; pour the substances into necessary areas thanks to their peak and analyze specific substances that require their measurement beforehand to achieve this.

More generally, this instrument is used to analyze chemicals for laboratory processes.

What is the graduated cylinder used for?

The most striking thing about the graduated cylinder is that it is such a basic and necessary instrument that it is used in small laboratories such as those found in educational institutions , understood as secondary laboratories. Within them, the basic instruments are studied and this cylinder is one of the main ones to be used.

However, the foregoing does not limit its use to a few situations, but quite the opposite since it tends to be necessary and exclusive in any other type of professional scientific laboratory found in the world. This is because it helps to make measurements in short periods of time and in the simplest way possible, since its characteristics in terms of structure tend to be the best when carrying out a volume measurement procedure. .

Summarizing the above, graduated cylinders are observed in biology, physics and chemistry laboratories, including other more specific laboratories, such as those for bioanalysis, biochemistry and radioactivity .

Types of graduated cylinder

Although graduated cylinders appear to be simple and of only one type, they are actually classified into various models based on their functionality and material. This helps to differentiate its use since, according to its characteristics, the correct one is chosen according to the procedure to be carried out.

The main types of graduated cylinder are the following:

Graduated glass cylinders.

As their name indicates, these instruments are those that have been created in glass and that work wonderfully to keep substances that are at high temperatures inside.

Plastic graduated cylinders (with lid and without lid).

This type of graduated cylinders are those that are characterized by being created in resistant plastics, despite the fact that they do not have the same resistance as glass graduated cylinders. These are achieved with or without lids, where those that have lids are made of the same material.

Graduated polypropylene cylinders.

Of all the materials in which the test tubes have been made, this type is considered the most resistant of all since it withstands chemical substances of all kinds. However, it is necessary to understand that it does not withstand extreme temperatures as they could break.

Graduated polymethylpentane cylinders.

One of the most outstanding specifications of this type of graduated cylinder is that its material makes the cylinder more transparent than normal, which ensures that any substance that is inside is observed is more clear and precise.

Graduated cylinders Mac.

This type of graduated cylinder is special for processes that are carried out with carbonic gas, since they are made under a special structure to support this substance. In addition, as it is a gas, the test tube has a cover that prevents it from coming out of the instrument.

Graduated cylinders type A.

This type of graduated cylinders are those that are used when carrying out chemical analysis, since their quality is higher and has a higher precision than usual.

Graduated cylinders type B.

Finally, there are those graduated cylinders that are too resistant but are mainly characterized by being inexpensive, since they are made of lower quality materials. These tend to be those that are displayed in children’s schools.

Dr. Loony Davis5
 | Website

Born and raised in Brussels in an English family, I have always lived in a multicultural environment. After several work experiences in marketing and communication, I came to Smart Water Magazine, which I describe as the most exciting challenge of my career.
I am a person with great restlessness and curiosity to learn, discover what I do not know, as well as reinvent myself daily, someone who is curious about life and wants to know. I enjoy sharing knowledge.
This is my personal project but I also collaborate in other blogs, it is the case, the most important web on water currently exists in the US, if you are interested you can read my articles here.

Leave a Reply

Your email address will not be published. Required fields are marked *