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We are committed to ensuring the quality of our water. This report is to inform you about the Onsen analysis, Contraindications, and Indications.



Tennoji [Sekai no onsen]


3-2-32 Ebisuhigashi Naniwa-ku, Osaka-shi, Osaka-fu


Collected by

TOHO Biological Laboratories Co.,Ltd.
樫井 成匡/内田 昭二

Collection Date

Mar 24, 2005


39.4℃(air temperature 28.9℃)


485 L/min power spring(submersible pump )

Sensory Properties

Light yellow, Hydrogen sulfide odor, Metallic taste


7.3 (Glass-Electrode Method)


4.7×10-10 Curie/kg 1.29 Mache/kg


Collected by

TOHO Biological Laboratories Co.,Ltd.
樫井 成匡/内田 昭二/福水 隆吉

Analysis End Date

Jun 7, 2005

Sensory Properties

Tasteless, Odorless, Light yellow (after sampling 72 hours)


0.9987g/cm3 (20℃/4℃)

Hydrogen Ion Concentration(pH)

7.4 (Glass-Electrode Method)

Evaporation Residue

469mg/kg (Drying Temperature 110℃)

1kg Samples

Components mg mval mval%
Hydrogen 0.0 0.000 0.00
Lithium 0.0 0.000 0.00
Sodium 134.4 5.845 86.66
Potassium 12.1 0.310 4.59
Ammonium 0.9 0.050 0.74
Magnesium 2.6 0.214 3.18
Calcium 6.2 0.310 4.59
Strontium 0.0 0.000 0.00
Barium 0.1 0.001 0.02
Aluminum 0.0 0.000 0.00
Manganese 0.0 0.000 0.00
Iron(Ⅱ) 0.4 0.014 0.21
Iron(Ⅲ) 0.0 0.000 0.00
Copper 0.0 0.000 0.00
Zinc 0.0 0.000 0.00
Total 156.7 6.74 100.0
Components mg mval mval%
Fluoride 0.2 0.011 0.16
Chlorine 58.3 1.644 24.85
Bromine 0.2 0.003 0.04
Lodine 0.0 0.000 0.00
Nitrite 0.0 0.000 0.00
Nitrate 0.0 0.000 0.00
Hydroxyl 0.0 0.000 0.00
Hydroxyl Sulfide 0.0 0.000 0.00
Hydroxyl Sulfate 0.0 0.000 0.00
Sulfate 0.0 0.000 0.00
Hydrogen Phosphate 2.7 0.056 0.85
Meta Arsenite 0.0 0.000 0.00
Bicarbonate 298.9 4.898 74.07
Carbonate 0.0 0.000 0.00
Metasilicate 0.0 0.000 0.00
Metaborate 0.0 0.000 0.00
Thiosulfate 0.1 0.002 0.03
Total 360.4 6.61 100.0
Components mg mmol
Metasilicic acid 93.8 1.201
Metaborate 0.8 0.018
Meta-arsenous acid 0.0 0.000
Total sulfur 0.1 0.001
Sulphuric acid 0.0 0.000
Total Undissociated Components 94.7 1.221

Dissolved Substances(except gas) Cations + Anions + Undissociated Components Total 611.8mg/kg

Dissolved Gas
Components mg mmol
Free carbon dioxide(free carbonate) 14.0 0.319
Free hydrogen sulfide 0.0 0.000
Total Dissolved Gas 14.0 0.319

Cations + Anions + Undissociated Components + Dissolved Gas Total 625.8mg/kg

Other trace constituent (about drink)
Total mercury Less than 0.0005mg
Lead Less than 0.01mg
Copper 0.02
Total arsenic 0.011
Total chrome Less than 0.01mg
Cadmium Less than 0.001mg


Simple Hot Spring(hypotonic, neutral, hot spring)

Contraindications, indications of the Hot-spring therapy

The Hot-spring therapy is a biological response caused by its temperature, other physical factors, chemical composition, the topography of the hot springs, the climate, changes in the living conditions of the person being treated, and other comprehensive effects. It is difficult to rely on the hot spring ingredients alone. To ensure its effectiveness, the following are contraindications and indications of hot spring.


Acute conditions (especially fever), active tuberculosis, malignancies, severe heart disease, respiratory insufficiency, renal insufficiency, bleeding disorders, high anemia, and other deteriorating diseases during pregnancy (especially early and late stages).


Neuralgia, myalgia, arthralgia, frozen shoulder, paralysis, joint stiffness, bruises, sprains, chronic gastrointestinal diseases, hemorrhoids, cold sensitivity, convalescent, Recovery from fatigue, improved overall health.


The aging phenomenon of the hot spring has been confirmed so the fresh spring water would be the best. Also, it would be a risk of disease if use wrong hydrotherapy due to different spring water quality. Therefore, whether bathing or drinking, you need to pay attention to the following notes. Especially when you drinking, it would be better drink fresh spring water and pay special attention to sanitation of the public spring facilities.

  1. Notes on bathing
    1. In the first few days of Onsen Hydrotherapy, it is better start bathing once a day, then 2 or 3 times daily.
    2. It’s best to take about 2-3 weeks as a course on Onsen Hydrotherapy.
    3. About 3 days to 1 week after starting Onsen Hydrotherapy you may feel faint after bathing so reduce or stop Hydrotherapy during this period to recover from this symptom.
    4. Another important notice as followed:
      1. The bathing time depends on the water temperature. The initial time is from 3 to 10 mins. It can be gradually extended after getting used to it.
      2. It’s better to keep calm and relaxed with the exception of sports bathing.
      3. Do not wash off the hot spring ingredients attached to the body after bathing. (People who are susceptible/allergic to hot springs ingredients should wash their bodies with fresh water after bathing or wipe off the hot spring ingredients.)
      4. Please be remain relaxed and calm for a while after bathing to prevent the body from catching a cold.
      5. In principle, the following diseases should avoid high temperature baths(107.2F° and up).
        1. Heavy arteriosclerosis
        2. Hypertension
        3. Heart disease
      6. Sudden entry into a hot spring pool may cause dizziness so please pay special attention to your health.
      7. Do not bath too soon before or after having a meal.
      8. Pay attention to bathing after drinking.
  2. Tips for drinking Spring Water safely
    1. Follow the advice from doctor's who have experience on treatment of Hot-spring therapy.
    2. Recommend drinking 100ml to 200ml at a time, 200ml to 1000ml per day.
    3. Depending on spring quality and concentration, should drink only after diluting it. Strong salt spring, acid spring, aluminum spring and Chalybeate springs.
    4. Other Notes.
      1. Best to drink 30 min to an hour before having a meal.
      2. Best to drink Chalybeate springs, Radioactive mineral springs and Arsenic-in-springs or Iodine-in-springs after having a meal. Should not drink tea or coffee right after drinking from a Chalybeate spring.
      3. Do not drink from springs between dinner and bedtime.


June 9, 2005