勘七源泉
Kanshichi Spring曹
Bicarbonate
- Color
- colorless and transparent
- Taste
- not recorded
- Odor
- not recorded
Sodium Bicarbonate spring
Hot source · 94°CHigh silica
Composition fingerprint1.0 g/kg dissolved · Hypotonic
Na⁺86
HCO₃⁻87
◀ 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 sodium-led bicarbonate spring — the classic jūsō-sen (soda-water) style, soft on the skin and squarely in the Japanese beauty-water family. A generous 207.5 mg/kg of metasilicic acid leaves the kind of silica film that makes skin feel noticeably smoother. The well emerges at a scalding 94 °C, among Japan's hottest natural sources, yet reaches the bath undiluted at 100% source strength as free-flow with no recirculation.
Sampled at wellhead·Analyzed Dec 6, 2019·公益社団法人 宮城県公害衛生検査センター·Cert no. 公衛検第1173号