The smoke tube works by drawing air through a small opening at the end of the tube and into a chamber containing a filter paper. The smoke particles in the air are trapped by the filter paper, which is then weighed to determine the concentration of smoke in the air.

This information is useful for many industries, such as manufacturing plants and power plants, where the emission of smoke and pollutants is a primary concern. By monitoring the concentration of smoke particles in the air, these facilities can ensure that they are operating within regulatory limits and taking steps to protect the environment.

Overall, the smoke tube is an important tool in ensuring that our air remains clean and healthy for all of us. While smoke and pollutants can pose a serious threat to public health and the environment, the use of devices like the smoke tube can help us to stay ahead of the problem and take proactive steps to protect ourselves and our planet.