When determining the content of potassium sorbate in liquid phase, the following matters should be paid attention to:

1. It is necessary to re-measure the number of microorganisms, because potassium sorbate is an organic acid, which may affect microorganisms.

It is forbidden to add potassium sorbate to children's food, because this substance may have an impact on children's health.

I suggest you consult the relevant literature for more detailed information.