Kanaguya Besso Source
Analysis UnverifiedIn Shibu Onsen, where legend credits the monk Gyoki with opening the springs, the Besso source is drawn from bedrock only about three meters below ground beside the bathhouse. Unlike the many clear waters of Shibu, it carries iron that clouds it a faint yellow, with a subtle metallic and salty taste. Its neutral, gentle touch lets sulfate and chloride warmth linger, suiting travelers who want to savor a retro bathhouse mood and quietly unwind.
The bar length shows how abundant each component is compared to thresholds that make it "distinctive" (therapeutic spring standards, beauty spring criteria, etc.).
A trace component with gentle antibacterial and anti-inflammatory action.
A natural moisturizer also used in skincare lotions. Forms a thin veil on the skin to reduce moisture loss after bathing.
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.
At 50.0°C the source makes for a hot bath, so pour water over yourself first and soak briefly. The neutral water is gentle on skin, but its iron may stain white towels.
With 363 mg/kg of sulfate and 315 mg/kg of chloride, this water warms the body deeply and may support Restorative warmth. Sulfate springs are traditionally associated with helping Relieve pain, fitting days of stiff shoulders or a chilled lower back.
The 50°C source is hot; avoid long soaks and dizziness, bathe briefly if you have heart or blood-pressure concerns, and note iron may stain fabrics.
※ See the analysis data below for detailed contraindications
ANALYSIS DATAView all analysis fields ▼
Source Info
- Source name
- Kanaguya Besso Source
- Spring type
- Sodium-Calcium Chloride and Sulfate Hot Spring
- Source temperature
- 50℃
- pH
- 6.6
- Flow rate
- 7.5 L/min
- Flow type
- 動力揚湯
- Osmotic pressure
- 低張性
Analysis Document
- Analysis date
- 2008-09-20
- Analyst organization
- 社団法人上田薬剤師会 検査センター
- Registration No.
- 長野県第7号
Cations
- Lithium ion Li⁺
- 0.70 mg/kg
- Sodium ion Na⁺
- 243 mg/kg
- Potassium ion K⁺
- 28.9 mg/kg
- Magnesium ion Mg²⁺
- 3.2 mg/kg
- Calcium ion Ca²⁺
- 103 mg/kg
- Aluminum ion Al³⁺
- 0.20 mg/kg
- Manganese ion Mn²⁺
- 0.20 mg/kg
- Iron(II) ion Fe²⁺
- 2.6 mg/kg
- Zinc ion Zn²⁺
- trace
- Lead ion Pb²⁺
- < 0.01 mg/kg
- Strontium ion Sr²⁺
- 0.40 mg/kg
- Cadmium ion Cd²⁺
- < 0.005 mg/kg
- Total cations
- 0.38 mg/kg
Anions
- Fluoride ion F⁻
- 1.6 mg/kg
- Chloride ion Cl⁻
- 315 mg/kg
- Hydrogen sulfide ion HS⁻
- trace
- Thiosulfate ion S₂O₃²⁻
- 0.20 mg/kg
- Sulfate ion SO₄²⁻
- 363 mg/kg
- Bicarbonate ion HCO₃⁻
- 21.4 mg/kg
- Bromide ion Br⁻
- 1.7 mg/kg
- Iodide ion I⁻
- 0.40 mg/kg
- Dihydrogen phosphate H₂PO₄⁻
- 0.30 mg/kg
- Total anions
- 0.70 mg/kg
Undissociated Components
- Arsenious acid HAsO₂
- 0.50 mg/kg
- Metasilicic acid H₂SiO₃
- 158 mg/kg
- Metaboric acid HBO₂
- 47.5 mg/kg
- Total undissociated
- 0.21 mg/kg
Dissolved Gas
- Free carbon dioxide CO₂
- 17.2 mg/kg
- Free hydrogen sulfide H₂S
- 0.05 mg/kg
- Total dissolved gas
- 0.02 mg/kg
Totals
- Total dissolved substances
- 1.3 mg/kg
- Component total
- 1.3 mg/kg
- Evaporation residue
- 1.2 mg/kg
Usage
- Heating
- No
- Dilution
- No
- Recycle / Filter
- No
- Additives
- No
- Disinfection
- No
Indications & Contraindications
- Bathing indications
- 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)
Drinking
- Drinkability
- Not drinkable
