- Bring herb extract 6 types measured at 50 ml put in beaker each one.
- Measure water 2 beaker and alcohol 1 beaker ,each 50 ml.
- Put surfactant into 6 extract beaker and 1 water beaker each o.05 ml.
- Take alcohol 49 ml of 2 beaker.
- Use pipet deeply Eucalyptus and Citronella grass essential oil 1 ml into the beaker of alcohol, one of each.