The use of photo-ionisation detector (PID) in recent years has become increasingly common.  For the detection of volatile organic compounds such as benzene or toluene no other common sensor type comes close to detecting the gas at the part per million (or even part per billion) level required, ...

Gas! GAS! Quick, boys!—An ecstasy of fumbling

Fitting the clumsy helmets just in time,

But someone still was yelling out and stumbling

And flound’ring like a man in fire or lime.—

Dim through the misty panes and thick green light,

As under a green sea, I saw him drowning.

The green sea Wilfred Owen ...

Most people are aware that carbon monoxide is a poisonous gas, many people indeed have carbon monoxide alarms in their homes, and it is commonplace for industries in which carbon monoxide is present to have personal and fixed gas detection equipment to protect the people working there.

Carbon m...

For people who live in the United Kingdom the idea of a world where it is always raining is not such a foreign concept, but when Ridley Scotts dystopian vision of 2019 Los Angeles was depicted in the movie “Blade Runner” this seemed a very strange idea indeed, and just added to the dark brooding nat...