Water fly method: A method of repeatedly grinding minerals and shellfish drugs insoluble in water to prepare extremely delicate powders by using the different suspension properties of coarse and fine powders in water.
The purpose of water flying:
(1) Remove impurities and clean the drug.
(2) Make the medicinal substance delicate, easy to take internally and externally.
(3) Prevent the drug from flying lightly in the grinding.
(4) Remove toxic substances that are soluble in water in the drug, such as arsenic, mercury, etc.
The water flying method of cinnabar will be introduced below
How to do this:
The cinnabar is properly broken, add an appropriate amount of water to the mortar, grind into a paste, and then add a large amount of water to stir, the coarse powder is sinking, immediately pour out the suspension, the sinking coarse grain is then as above, so repeated operation, until the hand twist is delicate, no bright star, discard the impurities, merge the suspension, pour out the water on it after standing, take the sediment to dry, and then refine it.
Notes:
(1) Avoid ironware when crushing, and pay attention to temperature.
(2) After the water flies, the cinnabar powder should be dried, not dried or dried.
(3) After drying, it should be stored in a closed and dry place in a cool and dry place to prevent oxidation.
Cannon production: cinnabar taste sweet, cold, poisonous, guixin sutra. Efficacy clear heart, calm, eye, detoxification. It is used for palpitations, insomnia and dreams, epilepsy and swelling. After flying through water, the content of free mercury and soluble mercury is reduced, the toxicity is reduced, and the powder can be pure and extremely fine, which is convenient for preparation and taking.
