Don wrote:
"Dave" wrote

I have never understood why all extinguishers were made red.

Originally they were coloured;

Water = Signal Red
Foam = Cream
Dry powder = French Blue
Carbon dioxide = CO2 Black
Wet chemical = No F Class
Class D powder = French Blue

We know. That's why Dave was wondering why they're now all red.

(I believe it's a European harmonisation thing.)

Pete