1/2 cup (125ml) distilled water
3/4 tbsp glycerin
Mix water and glycerin, pour into spray bottle. Shake before use.
Note: Do not use demineralised water, it's not the same and bacteria will form.
I have not used this mix on my ink pads, do so at your own risk.
I used these measurements for my refresher to make faux leather, the next mix I intend to cut the glycerin down a little. This mix works very well, the bonus is very soft hands.