It seems well accepted by people who work in underground environments, often confined spaces, that there is the possibility of finding gases there, such as methane and hydrogen sulphide, but does anyone actually know how they got there?

Cue the music and call for Sherlock!

Lets start by lo...

The very first gas detection system I ever specified, back in 1994, was for Morlands Brewery in Abingdon.  Long since closed now, they had a refrigeration plant and wanted to detect for ammonia around it.

Ammonia is commonly used as a refrigerant and poses some interesting questions when i...

Ammonia (NH3) is a colourless, toxic and flammable gas formed by the reaction of nitrogen with hydrogen.

Although ammonia has a strong smell like mothballs it is particularly harmful at excessive levels and prolonged exposure to humans and needs to be detected using ammonia gas detectors. W...