ルスツ温泉
Rusutsu OnsenOperated by · 留寿都村
塩
Chloride
+ Bicarbonate
- Color
- colorless and clear
- Taste
- very faintly salty
- Odor
- nearly odorless
Sodium Chloride-Bicarbonate spring
pH 7.5Weakly alkalineHot source · 44°CHigh silica
Composition fingerprint2.4 g/kg dissolved · Hypotonic
Na⁺73
Mg²⁺14
Ca²⁺12
Cl⁻75
HCO₃⁻20
◀ 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
- Aches & jointsstiff shoulders
- Smooth skindry, rough skin
A sodium chloride spring with a layer of bicarbonate softness — 44 °C at the wellhead, hypotonic and weakly alkaline. The salt edge sits on top of a smoothing 'jūsō-sen' (bicarbonate) base, gentle on the skin rather than aggressive. Metasilicic acid at 53.8 mg/kg places it just into the Japanese 'beauty-water' family.
Sampled at wellhead·Analyzed Jan 9, 2020·株式会社 環境プロジェクト·Cert no. 環プロ温 第200101号