Frequently Asked Questions about the Printing Machine Sink Solution—Selecting the proper sink liquid concentration is based on the conductivity value. When the conductivity is too high, the ink will not dry easily. If it is too low, it will be easy to stain or accumulate ink. Therefore, it is necessary to try to find the appropriate conductivity value. When the concentration value is found, multiplying the total water volume by the percentage is the first addition amount. In addition, when the conductivity value changes by more than ±50~100, it needs to be corrected before it can be used. At the same time, it is also necessary to pay attention to the temperature in the water tank, because the temperature will affect the measurement of the conductivity.