若草温泉
Wakakusa Onsen曹
Bicarbonate
- Color
- colorless and transparent
- Taste
- tasteless
- Odor
- odorless
Sodium-Magnesium-Calcium Bicarbonate spring
pH 7.7Weakly alkalineHot source · 47°CHigh silica
Composition fingerprint1.4 g/kg dissolved · Hypotonic
Na⁺44
Mg²⁺29
Ca²⁺21
HCO₃⁻73
Cl⁻15
◀ CationsAnions ▶
- Sodium Na⁺
- salt's cation — pairs with chloride to make the water salty.
- Bicarbonate HCO₃⁻
- "soda" — softens skin, leaves it smooth.
Known good for
- Smooth skindry, rough skin
- Aches & jointsstiff shoulders
- Recoveryfatigue, stress
A bicarbonate spring drawn in the Wakakusa district of Beppu, led by sodium with magnesium and calcium alongside it. Weakly alkaline and soft on the skin, it sits squarely in Japan's beauty-water family, and a moderate 1,410 mg/kg of dissolved solids gives the water noticeable body. The standout figure is metasilicic acid at 201 mg/kg — generous enough to leave the thin silica film that makes skin feel distinctly smoother afterwards.
Sampled at wellhead·Analyzed Jul 27, 2019·株式会社 東洋環境分析センター·Cert no. yZ1901411-001