How many liters of water are needed to produce Carlsbad salt?
Thermal Water as a Unique Natural Resource Karlovy Vary thermal water, which springs from a depth of approximately 2,500 meters, is naturally enriched with minerals such as magnesium, calcium, and potassium, with their concentration being approximately 5.5–6.4 g per liter.
At first glance, the box of Karlovy Vary Thermal Spring Salt may seem like a minor product. In reality, however, there is a fascinating story behind this small box, involving thousands of liters of natural thermal water and more than 30 hours of delicate processing for a single batch. So, how much water is needed to produce a 100g package of this unique salt?
Thermal Spring Water as a Unique Natural Resource
Karlovy Vary thermal spring water, which springs from a depth of approximately 2,500 meters, is naturally enriched with minerals such as magnesium, calcium, and potassium, with their concentration being approximately 5.5–6.4 g per liter. This concentration of minerals means that a significant amount of water needs to be removed to obtain the salt.
Production Process: From Water to Crystals
The production of Karlovy Vary thermal spring salt is a two-step process:
- Thickening (13 hours): A total of 8,325 liters of thermal water is first purified and then evaporated, creating a concentrated solution, called brine, with higher mineralization (110–120 g/l). This results in approximately 300 liters of concentrated solution.
- Crystallization (18 hours): The concentrate is enriched with CO2 (carbonation) and sprayed in hot air at a temperature of around 95 °C, leading to the formation of fine powdered salt. From about 300 liters of concentrate, approximately 28 kg of the final product is produced.
The entire process takes approximately 31 hours and is carried out without chemical additives, with an emphasis on preserving the natural mineral composition.
Key Data: How Much Water Is in One Box
Technological data show that approximately 297 liters of thermal water are needed to produce 1 kg of Karlovy Vary thermal spring salt. This means that about 30 liters of thermal spring water are required for one 100g box, which for reference, corresponds to 60 standard half-liter bottles of mineral water.
Why So Much Water Is Needed
Minerals in the thermal spring water are naturally diluted. The production process focuses on concentrating them without disturbing their structure. The result is a product that retains the character of the original thermal water but in a concentrated form.
What This Means for the Customer
Karlovy Vary thermal spring salt is not ordinary table salt but a natural mineral concentrate. A small amount of this salt provides a high content of natural active substances that support the balance of the body's internal environment and build upon traditional spa uses.
Conclusion
One 100g box of Karlovy Vary thermal spring salt contains approximately 30 liters of natural thermal water and more than 30 hours of careful processing. It's not just salt, but a concentrated result of a natural process that begins deep underground and continues with gentle production until its final form.
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