辰頭温泉
Tatsu Atama Onsen曹
Bicarbonate
+ Chloride
Sodium Bicarbonate spring
Hot source · 44°CHigh silica
Composition fingerprint2.4 g/kg dissolved · Hypotonic
Na⁺93
HCO₃⁻80
Cl⁻19
◀ 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
- Warmingcold sensitivity
A hot (43.9 °C) sodium bicarbonate-chloride spring — the soft, skin-smoothing 'jūsō-sen' style with a salty chloride finish layered in. Neutral pH and a moderate 2,356 mg/kg of dissolved solids give it body without heaviness, and 65 mg/kg of metasilicic acid sits firmly in beauty-water territory, leaving skin noticeably smoother after a soak.
Analyzed Mar 10, 2015·株式会社 三計テクノス