Tillekaratne,Ashani2025-02-172025-02-172019-01https://dr.ichemc.ac.lk/handle/123456789/223Page 22-26T he term “vacuum” is no stranger to humans who live on planet Earth. A vacuum cleaner is not at all strange in the everyday life of most people around the world. Most of us have of course been curious enough to place our palm at the end of the vacuum line and felt the effect of “sucking-in”. For scientists, “vacuum” is a very familiar terminology in the laboratory set up.enEarthchemistrylaboratory experimentsArticle