Cold water extraction, also known as CWE, is a procedure that involves the extraction of a specific substance or more from a mixture utilizing cold water. The process is a type of procedure that is most commonly known as a fractional crystallization.
Fractional crystallization as part of cold water extraction involves the use of a mixture of different substances by dissolving the liquid into warm water followed immediately by a cooling of the mixture. The elements that are insoluble will then be precipitated from the water and the soluble compounds will be dissolved. This dissolved solution is separated via a decanting of the mixture or using a filtration procedure. The processes operate by exploiting the differences occurring in the concept of solubility as it pertains to different substances in low-temperature mixtures.
A Step-By-Step Guide For Cold Water Extraction (CWE)
CWE is a relatively fast procedure over and above the cooling down of the water in the mixture. Below are the steps used to complete the best cold water extraction guide:
1. Crush The Tablets
The first step is to crush the tablets into a fine powder. If, however, the medication presents in a capsule form it is necessary to pour the contents of the capsule into the water directly. If crushing the tablets, it is recommended that one place the tablet in a zip-lock bag beforehand and use a rolling pin to complete the crushing act.
2. Dissolve The Powder
Next, the powder needs to be dissolved in approximately 1/2 or 3/4 cup of warm water. Do not use boiling water as this can destroy the substance.
3. Allow The Mixture To Cool
After dissolving the powder, it is necessary to allow the mixture to cool for approximately 10-20 minutes while stirring frequently. Stirring needs to be completed to ensure the powder is fully dissolved. It is vital that the mixture is not cooled too quickly as codeine can be destroyed in this way.
Once the mixture has cooled to room temperature, it is necessary to cool the mixture further by placing the item in a freezer with a container lid. The mixture should be left in the freezer for approximately 20-25 minutes until it is cold to the touch; however, it must not be left to freeze until solid.
4. Filter The Mixture
The fourth step involves the act of filtration. Place a coffee filter, filter paper, or a cheesecloth over the top of the container and secure it with tape. Pour the mixture through the filter slowly and try to not touch the filter. Once the mixture has flowed through the filter, you should be left with a substance of a marshmallow-like density.
5. Squeeze The Filter
A step that can be conducted, but is not necessary, is to squeeze the filter. This is done to ensure that the majority of the moisture is removed from the substance.
6. Drink The Mixture
After filtering the substance, it is possible to drink the filtered item. The substance may be bitter, so it is recommended that you add a sweetener to the compound. Remember to throw away any remaining aspirin, ibuprofen or acetaminophen.