Ganso Coral Sand 21: Coral Pack (Natural Coral Granule Water Activator 22g) Brand new, unopened item with a list price of 3300 yen. 1 pack Ordinary tap water becomes surprisingly delicious! At home, we use a decent water purifier, but when we drink water directly, we only use this water. This one pack is good for about 100 bottles of water (500ml). Besides being delicious and cost-effective, it's also very healthy! Recommended for children aged 0 to 18. *While I don't know if it has a direct effect (like 100% removal) on the recently discussed PFAS contamination, I have high hopes for the adsorption and purification power of this coral sand. According to the instructions, it seems fine to use it with tap water or water that has been through a water purifier, so at home, we use water that has been through a water purifier + coral sand. Just by putting it in water, 22 kinds of minerals such as calcium and magnesium dissolve into the water, creating natural mineral water with a slightly alkaline pH, like spring water. It transforms tap water, which tends to be acidic, into an optimal, slightly alkaline pH for drinking water. Contains 99.9% natural calcium, free of organic matter. Removes the chlorine smell from tap water and adsorbs heavy metals such as lead and rust, purifying the water. Because it's reduced water with a low oxidation-reduction potential, it removes active oxygen, which is said to be the root cause of diseases. The antibacterial action of silver prevents the growth of bacteria. Waterproof packaging and will be sent via Mercari delivery.