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The two terms adsorption and absorption describe processes that take place at the interface between two phases. In adsorption, gases or liquids—known as adsorbates—adhere to the surface of a solid …

Knowledge of a material’s hardness is indispensable for its proper application. In response to this need, hardness testing methods were developed, particularly over the course of the last century. However, …

Without silicon, our modern daily life would look entirely different. It is found in every microchip but also in baking moulds, lubricants, cosmetics, and plastics: the element silicon. Silicon – …

The term polyolefins refers to polymers produced from alkenes such as ethene, propene, butene, 2-methylpropene, and 4-methyl-1-pentene. Polyolefins are saturated hydrocarbons characterized by low density, good chemical resistance, low water …

Fully demineralised water, also known as deionised, demi-water, demineralised, distilled, or ultrapure water — all look just like regular tap or spring water but contain very few or no foreign …

Industrial Applications and Compatible Hose Technology Many people have heard the term aqua regia, but what exactly is this special ‘water’ and what is it made of? The name “aqua …

What do ski boots, household sponges, mattresses, and insulation panels have in common? All of these products contain the plastic polyurethane. Who Developed PUR? Polyurethane was developed in 1937 by …

Epoxy Resin is a sought-after material used in industry, everyday life, and even in art. It is a synthetic resin which, when mixed with a hardener, forms a thermosetting plastic. …

Shut-off valves are used to regulate or completely block a volume flow. For this purpose, a closing element, also called a closure element or shut-off body, is moved within a …

Persistent Organic Pollutants (POPs) are organic compounds that are harmful to humans and animals and degrade only very slowly in the environment. They contaminate air, soil and water and can …