Hey buddy!
If it works out to be that quarter strenght is a 1ML then thats exactly what it is.
1ML does not represent every 100ML.
Measuring cups are too big for this application.
What you're looking for is this. A cylinder dripper.
Depending on the size they can hold from 1ml to 50ml.
You can pick them up at any pharmacy or hydro store.
The black pipe thing is just an irrigation line I also got from the hydro store.
Its just so you can put in on the end of the cylinder dripper so you can get down to the bottom of your nutrient bottles.