万博温泉
Banpaku OnsenOperated by · ツルカメD&E株式会社
塩
Chloride
- Color
- colorless and clear
- Taste
- slightly salty
- Odor
- with a mineral note
Sodium-Calcium Chloride spring
pH 6.5NeutralHigh silica
Composition fingerprint6.3 g/kg dissolved · Hypotonic
Na⁺65
Ca²⁺21
Cl⁻88
HCO₃⁻12
◀ CationsAnions ▶
- Sodium Na⁺
- salt's cation — pairs with chloride to make the water salty.
- Chloride Cl⁻
- table-salt anion — coats the skin and holds heat in.
Known good for
- Warmingcold sensitivity
- Smooth skindry, rough skin
- Cutsminor wounds
A sodium-calcium chloride spring drawn from a 25.3 °C wellhead beneath the Banpaku Expo park. Neutral pH and a salty, mineral-tinged taste reflect 6.3 g/kg of dissolved solids — moderately mineralized with noticeable body. Because the source itself is classed as a low-temperature spring (under 34 °C), the water is heated before bathing. A generous 117 mg/kg of metasilicic acid puts it in the Japanese 'beauty-water' family, leaving a thin silica film that makes skin feel noticeably smoother afterwards.
Sampled at wellhead·Analyzed Jul 4, 2022·日本水処理工業株式会社·Cert no. No.22R-010
