Kevin

Many students get confused when they are asked to use a laboratory squeeze bottle in their experiments. They often think it is a completely different piece of equipment from the wash bottle they already know. In reality, laboratory squeeze bottles and wash bottles are the same type of container—just known by different names. The term … Read more

What is a Conical Flask? A conical flask, also known as an Erlenmeyer flask, is a type of laboratory glassware with a wide, flat base that tapers into a narrow neck. This flask is widely used in chemistry and biology laboratories for mixing solutions, heating liquids, titrations, and culturing microorganisms. Main Features The conical flask … Read more

What is a Pneumatic Trough? A pneumatic trough is a laboratory container used for collecting gases that are insoluble or only slightly soluble in water, such as oxygen, hydrogen, or nitrogen. It is typically made of glass, metal, or plastic and is filled with water to facilitate gas collection. The principle behind the pneumatic trough … Read more

What is a Test Tube Brush? A test tube brush is a laboratory cleaning tool specifically designed to clean the inside of test tubes and other narrow glassware. It consists of a long, flexible handle (usually made of plastic or metal) with soft bristles at the end. These bristles help scrub away residues, chemical deposits, … Read more

What is a Test Tube Rack? A test tube rack is a laboratory tool used to hold, organize, and store test tubes safely during experiments. It prevents test tubes from tipping over and spilling their contents. Test tube racks come in different materials, including plastic, wood, and metal. Types of Test Tube Racks Test tube … Read more

What is Test Tube? A test tube is a small, cylindrical glass or plastic container with a rounded bottom and an open top. They come in different sizes, but most are 10 to 20 cm long and 1 to 2 cm wide—just the right size for holding small amounts of substances in the lab! Important … Read more

The oxidation number (or oxidation state) is used to describe the positive or negative nature of an atom. When an atom loses electrons, it acquires a positive oxidation number. Conversely, when an atom gains electrons, it acquires a negative oxidation number. From time to time, you may be required to calculate the oxidation number of … Read more