Dilution per se isn't really that feasible. You could attempt to emulsify or use DMSO - but the latter would only evaluate an extract.

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Hi Derradji Lamia

You can dilute the oil in DMSO (

@SatwikMajunder thank you for your answer

You should use substantially less than 5% ethanol - final should be < 1%.

In any case, you're diluting a solution to form and test a microemulsion.

Phil Geis ok thank you for your answer

Use decreasing series of volume with the agar before it gets solid.

Asst.Prof.Muthanna ok thank you

Decreasing series in agar will give vegetable oil globs in agar of decreasing size.

You might consider most of the recommendations would give you a "result" that is pretty meaningless. Essential oils are often diluted in DMSO for testing, the results of which are theoretical and meaningless as DMSO is not used in essential oil application. Most practical applications of importance are in context of an aqueous environment in which vegetable oil have very limited presence.

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Nnyeneime Bassey thanks a lot