How many litres does a Blue Plastic Drum hold?

We have just moved and for the garden and fertilising that we have to do each year there is a big blue plastic drum, tub or barrel, whatever people like to call it.

There isn’t a listing on the side of the drum of how many litres it holds so I had to find out so I can get the correct ratio of water to Charlie Carp fertiliser.

So….

A Blue Plastic Drum holds 200 litres.