Ampule manufacturing

Question via email:

In the food test tray I lack some ampules of specific things that are only found here in Chile.

How for example can I make an oil ampule? How much oil and distilled water do I need?

If it were a plant, how do I do it?

Answer:

For the oil ampule: 1/10 oil, 3/10 alcohol, 6/10 distilled or reverse osmosis water

With the plant: an extract like a tea infusion or tincture of the plant. Mix the extract in the same proportions as above with alcohol and distilled water.