Output of hydrolats
The general rule for collecting hydrolats: “It is recommended to use approx. 0,5 kg of the raw material for obtaining1 L of hydrosol.” In case of using this proportion, you will get high-quality hydrolats with useful medical properties.
Column capacity
The 2-liter distillation column holds 0,5 kg of rosemary, which means we can receive 1 liter of hydrolats and 10-14 ml yield of essential oil.
In this case, during the distillation, we use 1 liter for collecting hydrolats and 1 liter for the steam evaporation (in fact, less than 1 liter but for safety, it’s better to pour more than less).
The 9-liter distillation column holds 2,25 kg of rosemary, as result, we can collect 4,5 liters of hydrolats and pour our pot with 6 liters of water.
Does it important the quality of water for making oil?
Distilled water is a type of purified water that has had both contaminants and minerals removed. Purified water has had chemicals and contaminants removed, but it may still contain minerals.
There is no reason to use “purified” or enriched water, because after the distillation you will lose all magnesium and calcium minerals.