Mr Fishy wrote:
After years of using washing powder, I'm making the switch to liquid
And you'd think it was easy......but it isn't
The stuff comes in a 2 liter bottle and you only add 50 ml of liquid to each wash. So I had to ring up and ask for a silly little ball thingy to measure the stuff out
And then I see the bottles a bit to big for my cupboard
So I end up ordering a 750m stainless steel leak-proof bottle from ebay for £7 and a funnel. This way I can decant it
Just so I can pour the stuff out into the washing machine without making a mess
All this cos I'm fed up with lugging home boxes of washing powder..........

I got a small plastic cup with lots of measurements on the side, in red, so you can make small measures of almost anything, in Wilko's. Only cost 50p.
Mrs D wanted me to use it to measure my drinks but I persuaded her that a half litre wouldn't wet the bottom of a glass.
It would solve your problem!