What is the correct mositure content for a screeded floor ?

I layed a floor with rmc fibre screed 10 months ago and tested it with a protometer. I got a moisture reading of about 19% is this ok? The floor has been washed over with a pva solution to supress the dust could this have retained some of the moisture?

Answers:
Concrete will always take on moisture. That's the reason vapor barriers are used over them when installing finish flooring over them. 20% moisture is normal and fine. Do what you need to do next.
consistencey of mustard powder yes you should have waited until the screed had dried usually about 3 or 4 days
it shouldn't be more than 5%
u know that PVA solution maintains very low viscosity right?

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