Radon-sen, No. 1
Analysis VerifiedThis Radon-sen No. 1 source plays a key role as one of the "Ginsen" (Silver Springs) that color the history of Arima Onsen, one of Japan's three ancient hot springs. In contrast to the reddish-brown "Kinsen" containing iron, Ginsen is characterized by its clear, smooth feel. The water from this source is said to gently stimulate cells and vitalize the body as it's absorbed through breathing.
The bar length shows how abundant each component is compared to thresholds that make it "distinctive" (therapeutic spring standards, beauty spring criteria, etc.).
A rare radioactive spring where trace radiation absorbed via inhalation and skin is expected to stimulate cells (the "hormesis effect").
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 spring temperature is low at 14.6°C, so it is heated. While the neutral water is gentle on the skin, repeated short soaks are recommended over long baths to best utilize the radioactive spring's properties. Slowly inhaling the steam may enhance the effects.
This simple, weakly radioactive spring with 637 Bq/kg of radon plays a key role in balneotherapy. Radon, absorbed through the skin and breath, is traditionally associated with immune system stimulation and relieving pain. With a gentle, neutral pH of 6.94, it's ideal for those seeking to soothe daily fatigue and refresh mind and body.
As a radioactive spring, bathing should be avoided by those with acute illnesses, malignant tumors, severe heart or kidney disease, or bleeding disorders. The water is heated due to its low natural temperature.
※ See the analysis data below for detailed contraindications
ANALYSIS DATAView all analysis fields ▼
Source Info
- Source name
- Radon-sen, No. 1
- Spring type
- Simple Spring
- Source temperature
- 14.6℃
- pH
- 6.94
- Flow rate
- 163 L/min
- Flow type
- 掘削、動力揚湯
- Osmotic pressure
- 低張性
Analysis Document
- Analysis date
- 2015-03-27
- Analyst organization
- 兵庫県立健康生活科学研究所
- Registration No.
- 薬第02E-0001号
Cations
- Sodium ion Na⁺
- 9.1 mg/kg
- Potassium ion K⁺
- 0.60 mg/kg
- Magnesium ion Mg²⁺
- 0.70 mg/kg
- Calcium ion Ca²⁺
- 13.0 mg/kg
- Aluminum ion Al³⁺
- 0.10 mg/kg
- Total cations
- 0.02 mg/kg
Anions
- Fluoride ion F⁻
- 2.8 mg/kg
- Chloride ion Cl⁻
- 10.7 mg/kg
- Sulfate ion SO₄²⁻
- 7.9 mg/kg
- Bicarbonate ion HCO₃⁻
- 34.2 mg/kg
- Nitrate ion NO₃⁻
- 4.3 mg/kg
- Total anions
- 0.06 mg/kg
Undissociated Components
- Metasilicic acid H₂SiO₃
- 34.4 mg/kg
- Total undissociated
- 0.03 mg/kg
Dissolved Gas
- Free carbon dioxide CO₂
- 6.6 mg/kg
- Total dissolved gas
- 0.01 mg/kg
Trace Components
- Radon Rn
- 637 Bq/kg
Totals
- Total dissolved substances
- 0.12 mg/kg
- Component total
- 0.12 mg/kg
- Evaporation residue
- 0.08 mg/kg
Usage
- Heating
- Yes（As this is a cold spring (14.6°C), cold water may be added. Thank you for your understanding.）
- Dilution
- No
- Recycle / Filter
- No
- Additives
- No
- Disinfection
- No
Indications & Contraindications
- Bathing indications
- Hyperuricemia (gout), Rheumatoid arthritis, Ankylosing spondylitis, Autonomic instability, Insomnia, Depression, Chronic pain or stiffness in muscles and joints (rheumatoid arthritis, osteoarthritis, low back pain, neuralgia, frozen shoulder, bruises, sprains, etc. in chronic stages), muscle stiffness due to motor paralysis, poor circulation, gastrointestinal dysfunction, high blood pressure (mild), impaired glucose tolerance (diabetes), dyslipidemia, mild asthma or emphysema, hemorrhoids, autonomic instability, stress-related symptoms, post-illness recovery, fatigue recovery, health promotion, hyperuricemia (gout), rheumatoid arthritis, ankylosing spondylitis
- General indications
- High blood pressure (mild), 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), Undergoing radiation therapy, pregnancy (radioactive springs), Active stages of illness (especially with fever), active tuberculosis, advanced malignant tumors or severe anemia with significant physical debilitation, severe heart or lung disease causing shortness of breath with slight movement, severe kidney disease with swelling, gastrointestinal bleeding, visible bleeding, acute exacerbation of chronic illness
Drinking
- Drinkability
- Not drinkable