1dl/10 l water (1:100)
There's also a picture on the label of 5 caps of fluid added to a bucket of 10 litres of water. There's no way that 5 caps = half a litre.
This confused me so I called the UK office of the flooring company, and they said it's 1:10 not 1:100, and the company HQ in Sweden concurred with 1:10
Why do I have a nagging doubt? Why do they even get into demi-litres, why not just 1 part concentrate to 10 parts water (if that's what they mean)? But how can that be correct if 5 caps should be added to 10 litres of water? That's definitely closer to 1:100