Got a tip by Lena at wexthuset.com which I practice. Dosing in water pitcher with a small pump bottle.
The bottle I use can be found on the eel's (the Department) and costs 20:-. The press gives about 2 ML and it is time for 1 liter vatten. perfect so you do not waste on industry unnecessarily by giving too much. In among these small simple solutions so well that they are hard to get for yourself, Thanks Wendy for this ingenious tips.