What is Sulphur?


Sulphur is one of the most common elements on Earth. It can be found near volcanoes in its pure form as a yellow solid, but it also occurs in large quantities in minerals such as pyrite (iron disulphide; FeS2) and gypsum (calcium sulphate; CaSO4). Finally, dissolved sulphate (SO42-) is present in seawater. Sulfur reacts readily […]

What are Professional Development Hours (PDH)?

These are so-called study credit hours that you have to make in addition to your professional work-related hours. This has become a strict requirement in order to maintain your CP, CIP or any other certificate from organisations such as Frosio and AMPP. How many hours are required, differs per organisation and per certificate. As of […]