The left column represents mL of carrier oil. For example, using 30mL of jojoba oil as your base carrier oil to create a bath or massage oil for an adult the dilution rate can be 2 to 2.5%. Find 30mL on the left side of the chart above and follow it across where it intersects with the 2.5% top column. The number 15 is displayed as the # of drops required to achieve a 2.5% dilution. When blending more than one essential oil the number of drops in this chart represents the "total" amount.
*Blending rates for children or the elderly use 1% dilution. Seek advice first from healthcare professional or licensed aromatherapist for any possible contraindications when blending for children or the elderly.