TestTube

Description

A test tube is a small, clear tube. It is open at one end and closed at the other end. People use test tubes a lot in science labs. You can mix liquids in them. You can also heat liquids in them. So, they are very useful for many science jobs.

Appearance

• Shape – It is a long, thin tube. It is round at the bottom.
• Material – Usually clear glass or clear plastic.
• Size – Comes in different sizes, from very small to a bit larger.

Features

A test tube is often made of strong glass. Because of that, it can handle heat very well. It is also clear, so you can easily see what is inside. Some test tubes might have lines on the side. This helps you measure liquids. They are made to be durable.

Applications

Test tubes are used a lot in science and medicine. You can use them to hold samples of liquids. You can also mix chemicals in them. They are good for heating small amounts of liquid. So, they help with many experiments.

How To Use

You will hold the test tube carefully. If you are mixing liquids, you can shake it gently. If you are heating it, you will use a special holder. This holder keeps your hands safe. You should always be careful when handling test tubes.

Instructions

Always be careful when you use a test tube. If it is made of glass, it can break. Do not heat a test tube too fast. If you are heating chemicals, use eye protection. After you use a test tube, you will clean it very well. This makes it ready for the next job. You might also use a test tube rack. This helps hold many test tubes upright. So, they will not spill.