奥白馬温泉
Okuhakuba OnsenOperated by · 奥白馬高原開発株式会社
曹
Bicarbonate
- Color
- nearly colorless
- Taste
- slightly mineral
- Odor
- essentially odorless with a very faint hydrogen sulfide note; an odorant gas (rich in CO₂) is also released
Sodium Bicarbonate spring
pH 6.6NeutralHigh silica
Composition fingerprint1.1 g/kg dissolved · Hypotonic
Na⁺85
HCO₃⁻82
Cl⁻16
◀ 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
- Recoveryfatigue, stress
A sodium-led bicarbonate spring — the classic 'jūsō-sen' style, soft and rounded on the skin. Hypotonic, neutral pH, sitting in the Japanese 'beauty-water' family. Metasilicic acid runs to 108.6 mg/kg, leaving a thin silica film that makes skin feel smoother afterwards. Free CO₂ at 284 mg/kg arrives as an aromatic gas, paired with a faint mineral tang and the merest whisper of H₂S at the wellhead.
Sampled at wellhead·Analyzed Apr 2, 2020·一般社団法人 長野県薬剤師会
