You can make steam distilled water at home using a large pot, a stovetop, and some ingenuity. Here's how:
Simple Steam Distillation Method
This method uses items readily available in most kitchens.
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Prepare the Pot: Place a large pot (stainless steel is best) on a stovetop burner. Add approximately 8 cups of tap water (or enough to come partway up the sides).
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Introduce a Collection Vessel: Place a heat-safe bowl or smaller container inside the pot. This bowl should be smaller than the pot so that it floats on top of the water, and the lid can still sit on top. The top of this vessel should be below the top edge of the large pot.
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Invert the Lid: Place the lid upside down on the large pot. This will create a cone shape where condensation can form.
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Initiate Condensation: Fill the top of the inverted lid with ice. This will cool the lid and promote condensation of the steam. As the steam rises, it will condense on the cold lid and drip into the floating bowl.
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Apply Heat: Turn the burner to medium heat. The water in the large pot will begin to boil, creating steam.
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Monitor and Replenish: As the ice melts on the lid, replace it with more ice. Monitor the water level in the large pot; add more water if it gets too low (be careful adding water to a hot pot; add slowly to avoid splashing steam burns).
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Collection: Once you've collected a sufficient amount of distilled water in the floating bowl, carefully remove the pot from the heat and let it cool down.
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Extraction: Carefully remove the bowl containing the distilled water. Be careful not to spill any of the water from the larger pot into the distilled water.
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Storage: Store the distilled water in a clean, airtight container.
Why Steam Distillation Works
Steam distillation separates water from impurities through a process of evaporation and condensation. When the water boils, it turns into steam, leaving behind minerals and other contaminants. As the steam cools on the inverted lid, it condenses back into pure water, which is then collected.
Important Considerations:
- Cleanliness: Use a thoroughly clean pot and bowl to avoid contaminating the distilled water.
- Safety: Be extremely careful when handling hot pots, boiling water, and steam to prevent burns. Wear oven mitts.
- Purity: While this method produces relatively pure water, it may not be as pure as commercially distilled water produced using professional equipment. For critical applications, consider purchasing commercially distilled water.
- Alternatives: Consider using a dedicated water distiller appliance for consistent and safe distilled water production if you require distilled water regularly.
By following these steps, you can produce steam distilled water at home for various uses, such as humidifiers, irons, and other applications where mineral-free water is needed.
