Shinyu Onsen No. 3 Gensen
Analysis UnverifiedSaid to have opened in 1720, Shinyu Onsen is one of the Kurikoma Five Springs on the upper Sanhasama River and was long called a "phantom spring." Its dormant source was revived in 2006 and again soothes mountain hikers. Clear and cool as it emerges, the water turns milky with a sulfur scent once warmed, filling the tub with fine white flakes, a source for those who enjoy watching a spring transform in mountain quiet.
The bar length shows how abundant each component is compared to thresholds that make it "distinctive" (therapeutic spring standards, beauty spring criteria, etc.).
The source of the distinctive sulfur smell. Dilates blood vessels via skin and inhalation to strongly boost circulation.
Scores are calculated from mineral analysis data based on the Mineral Spring Analysis Guidelines (Ministry of Environment, Japan). They are unrelated to facility atmosphere or service quality.
▸Note
The temperature, pH and component values shown here are based on the hot spring analysis (source). Actual values in the bath may differ depending on heating, dilution, recycling and filtration. Please check current usage status at the facility.
The 28.6°C source is heated, so water near the spout runs hot; adjust with cool spring water before soaking, keep the room ventilated for hydrogen sulfide, and rinse lightly afterwards.
With 9.6 mg/kg of free hydrogen sulfide, this sulfur water is traditionally associated with Immune system stimulation, while 781 mg/kg of sulfate may help Relieve pain, suiting legs tired from hiking or stiff shoulders.
Contains hydrogen sulfide, so keep the area ventilated and avoid long soaks; heated water can exceed 46°C outdoors, so adjust the temperature first and rinse if your skin is sensitive.
※ See the analysis data below for detailed contraindications
ANALYSIS DATAView all analysis fields ▼
Source Info
- Source name
- Shinyu Onsen No. 3 Gensen
- Spring type
- Sulfur-containing Calcium Sulfate Spring (hydrogen sulfide type)
- Old spring type name
- 石膏硫化水素泉
- Source temperature
- 28.6℃
- pH
- 5.9
- Osmotic pressure
- 低張性
Analysis Document
- Analysis date
- 2015-06-17
- Analyst organization
- 公益財団法人宮城県公害衛生検査センター
- Registration No.
- 宮城第1号
Cations
- Lithium ion Li⁺
- < 0.1 mg/kg
- Sodium ion Na⁺
- 19.2 mg/kg
- Potassium ion K⁺
- 4.5 mg/kg
- Ammonium ion NH₄⁺
- 0.10 mg/kg
- Magnesium ion Mg²⁺
- 17.4 mg/kg
- Calcium ion Ca²⁺
- 277 mg/kg
- Aluminum ion Al³⁺
- < 0.1 mg/kg
- Manganese ion Mn²⁺
- 1.1 mg/kg
- Iron(II) ion Fe²⁺
- 0.10 mg/kg
- Iron(III) ion Fe³⁺
- < 0.1 mg/kg
- Zinc ion Zn²⁺
- < 0.1 mg/kg
- Lead ion Pb²⁺
- < 0.01 mg/kg
- Strontium ion Sr²⁺
- 0.20 mg/kg
- Copper ion Cu²⁺
- < 0.1 mg/kg
- Cadmium ion Cd²⁺
- < 0.002 mg/kg
- Total cations
- 0.32 mg/kg
Anions
- Fluoride ion F⁻
- 0.70 mg/kg
- Chloride ion Cl⁻
- 7.2 mg/kg
- Hydroxide ion OH⁻
- 0.00 mg/kg
- Hydrogen sulfide ion HS⁻
- 0.60 mg/kg
- Thiosulfate ion S₂O₃²⁻
- 0.80 mg/kg
- Sulfate ion SO₄²⁻
- 781 mg/kg
- Bicarbonate ion HCO₃⁻
- 30.0 mg/kg
- Carbonate ion CO₃²⁻
- 0.00 mg/kg
- Bromide ion Br⁻
- < 0.1 mg/kg
- Iodide ion I⁻
- 0.80 mg/kg
- Hydrogen sulfate HSO₄⁻
- < 0.1 mg/kg
- Dihydrogen phosphate H₂PO₄⁻
- < 0.1 mg/kg
- Hydrogen phosphate HPO₄²⁻
- 0.00 mg/kg
- Sulfide ion S²⁻
- 0.00 mg/kg
- Hydrogen metasilicate HSiO₃⁻
- 0.00 mg/kg
- Metaborate ion BO₂⁻
- 0.00 mg/kg
- Total anions
- 0.82 mg/kg
Undissociated Components
- Arsenious acid HAsO₂
- 0.10 mg/kg
- Metasilicic acid H₂SiO₃
- 48.6 mg/kg
- Metaboric acid HBO₂
- 0.20 mg/kg
- Total undissociated
- 0.05 mg/kg
Dissolved Gas
- Free carbon dioxide CO₂
- 52.2 mg/kg
- Free hydrogen sulfide H₂S
- 9.6 mg/kg
- Total dissolved gas
- 0.06 mg/kg
Totals
- Total dissolved substances
- 1.2 mg/kg
- Component total
- 1.3 mg/kg
- Evaporation residue
- 1.2 mg/kg
Usage
- Heating
- Yes
- Dilution
- No
- Recycle / Filter
- No
- Additives
- No
- Disinfection
- No
Indications & Contraindications
- Bathing indications
- Atopic dermatitis, Plaque psoriasis, Chronic eczema, Epidermal suppuration, Cuts and grazes, Peripheral circulatory failure, Poor circulation, Depression, Xeroderma
- General indications
- High blood pressure (mild), Rheumatoid arthritis, Autonomic instability, Insomnia, Chronic pain or stiffness in muscles and joints, Muscle stiffness due to motor paralysis, Gastrointestinal dysfunction
- Contraindications
- Acute illness (especially with fever), Active tuberculosis, Malignant tumors, Severe heart disease, Respiratory failure, Renal failure, Bleeding disorders, Severe anemia, Any actively progressing illness, Pregnancy (especially early and late stages), Severe chronic dermatitis (sulphur springs)
Drinking
- Drinkability
- Not drinkable
