岡191号・岡152号・岡137号 混合泉
Oka No. 191 / No. 152 / No. 137 Mixed SpringOperated by · 株式会社大東館
Mixed source
湯
Simple
- Color
- almost colorless and transparent
- Taste
- faintly salty
- Odor
- odorless
Sodium-Calcium Chloride-Sulfate spring
pH 8.2Weakly alkalineHot source · 44°C
Composition fingerprint0.8 g/kg dissolved · Hypotonic
Na⁺59
Ca²⁺39
Cl⁻58
SO₄²⁻37
◀ 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
- Aches & jointsstiff shoulders
- Smooth skindry, rough skin
- Recoveryfatigue, stress
A blended spring drawing on three wells — Oka No. 191, No. 152, and No. 137 — sampled from the storage tank in Ito's Suehiro neighborhood. The wellhead temperature is a hot 44.2 °C, but the total dissolved solids sit at a light 808 mg/kg, placing it firmly in simple thermal territory. Weakly alkaline at pH 8.2, the water reads soft on the skin, with sodium leading the cations and chloride and sulfate sharing the anion column almost evenly.
Sampled at mixing tank·Analyzed Aug 25, 2023·芝浦セムテック株式会社·Cert no. 第H2302395号
