Cold water extraction: Difference between revisions

>David Hedlund
For a whole batch: Conditionally, dry the substance to calculate how solvents/water that the batch contained
>David Hedlund
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==For a whole batch==
==For a whole batch==
{{GenericPanel/warning | title=The potency of the dried weight before and after the extraction can differ a lot. Up to 50% (25% solvents, and 25% insoluble impurities) has been discarded, reported from people who initially though they possessed a "pure" substance. So it's extra important to [[dosage]] properly after the extraction! Avoid eye balling, since a lot of street drugs can be overwhelmingly potent after the majority of the cutting agents have been removed. Avoid extraction altogether if you don't know how to dose it.}}
{{GenericPanel/warning | title=The potency of the dried weight before and after the extraction can differ a lot. 50% (25% solvents, and 25% insoluble impurities) has been discarded, reported from people who initially though they possessed a "pure" substance. So it's extra important to [[dosage]] properly after the extraction! Avoid eye balling, since a lot of street drugs can be overwhelmingly potent after the majority of the cutting agents have been removed. Avoid extraction altogether if you don't know how to dose it.}}


For improved extraction, it's recommended to do an acetone wash (not covered in this guide) before you do the CWE, but it is not required.
For improved extraction, it's recommended to do an acetone wash (not covered in this guide) before you do the CWE, but it is not required.
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# Weight the substance, and write down the value.
# Weight the substance, and write down the value.
# For lumped substances: Break them apart, and sift the powder with a coarse strainer, and then with a fine strainer, to make them easy to dissolve.
# For lumped substances: Break them apart, and sift the powder with a coarse strainer, and then with a fine strainer, to make them easy to dissolve.
# Conditionally, dry the substance to calculate how solvents/water that the batch contained. Use completely dried silica gel (can be heat in microwave for 5 minutes at 800W) in a sealed container, and weigh samples until they don't lose any weight, which indicates that it's completely dry. Expect a loss of ~25% wet weight from large lumps, and 50% methanol from a paste.
# Conditionally, dry the substance to calculate how solvents/water that the batch contained. Use completely dried silica gel (can be heat in microwave for 5 minutes at 800W) in a sealed container, and weigh samples until they don't lose any weight, which indicates that it's completely dry. Expect a loss of up to 40% wet weight from large lumps, and 50% or more from a paste.
# Add the fine powder to a glass jar, and add 10 times more boiling water than the quantity of the substance, and shake well for 10 seconds. This should precipitate the soluble substances in the water.
# Add the fine powder to a glass jar, and add 10 times more boiling water than the quantity of the substance, and shake well for 10 seconds. This should precipitate the soluble substances in the water.
# Let the water cool down to room temperature.
# Let the water cool down to room temperature.