2源泉の混合泉(龍神温泉 上の湯・下の湯)
Ryujin Onsen Blend (Kaminoyu + Shimonoyu)Operated by · 龍神温泉協会
Mixed source
曹
Bicarbonate
- Color
- colorless and clear, no bubbling observed
- Taste
- tasteless
- Odor
- odorless
Sodium Bicarbonate spring
pH 7.8Weakly alkalineHot source · 43°C
Composition fingerprint1.5 g/kg dissolved · Hypotonic
Na⁺96
HCO₃⁻93
◀ 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 bicarbonate spring of the jūsō-sen family, blended from two wellheads (Kaminoyu and Shimonoyu) and emerging hot at 43.3 °C. Weakly alkaline at pH 7.8 with a generous bicarbonate load, it sits squarely in Japan's beauty-water tradition — soft, slippery on the skin even though the water itself is colorless, tasteless, and odorless at the source. Moderately mineralized at 1,502 mg/kg dissolved solids, it is the kind of gentle, skin-smoothing water that earned Ryujin its place among Japan's three celebrated bijin-no-yu springs.
Sampled at mixing tank·Analyzed Jun 10, 2016·和歌山県環境衛生研究センター·Cert no. 温泉第1071-2号