How to determine the dilution stability of emulsion

In a 10 ml graduated test tube, use a leaky tube to add 2 ml of emulsion, then use a dropper to add 8 ml of deionized water, shake well and place on the test tube rack, and observe whether there is any after 24 h and 48 h. If stratification, water separation, and precipitation occur, the passage does not occur if the above phenomenon occurs.
You can also refer to the above ratio, weigh it in a suitable container, mix well and place it in a test tube for observation.