This film shows how Chemical Foam extinguisher, which were made in the UK between the 1920's and 1970's worked, using a combination of archive footage and a 60+ year old preserved extinguisher's contents.
NOTE - Made using basic smart phone and editing technology, not intended as a polished professional product!
The whole FPA video the clip is from is also on this channel and is uploaded with their consent.
![](https://s2.save4k.ru/pic/NRW36Fj7I5M/maxresdefault.jpg)