*The Ion Detector shows you that the negative ion generator is working. However, if you do not have the detector, audible sparking sounds from the 3 ion discharge needles let you know that ions are being released.
The patented technology, "Air Ionization Electron Emission Method" *1 generates a massive amount of negative ions while maximizing efficiency*2.
This ensures that your room is filled with negative ions. This is why the Medical Ion Mini is highly appraised by customers.
We guarantee the superior performance. There is no reason not to choose it!*1 Int'l patent No. PCT/JP2002/008541 *2 Minimizes the loss and maximizes the ion count in the air
Purchase reason: I was feeling tired, had a hard time sleeping, pollen and dust allergy. My sleep and energy level have improved, i turn in on about 12 to 14 hours per day. Negative ions kill viruses also. I am very happy with my purchase and i hope for more health improvements. Thank you Read more
No.3231 Ms. Y.T, Kanagawa, Japan
Reviewed on 2019-11-23
5 / 5-stars
I did not wake up in the middle of the night and woke up refreshed in the morning.
Reason(s) why I purchased from you: Your website provides detailed info on negative ions. I found positive reviews and I thought it might work. Detailed review: I stared to use this product a week ago. I was able to sleep well on the 1st day. I did not wake up in the middle of the night and woke up refreshed in the morning. I sometimes felt suffocated but now I can breathe better. Read more
No.3691 Mr. O.H, Yamagata, Japan
Reviewed on 2021-05-10
5 / 5-stars
I can now sleep well. My sleep app says the quality of sleep is good.
Reason(s) why I purchased from you: The advertisement is great. Detailed review: I could not sleep well because of psychological stress. I can now sleep well. My sleep app says the quality of sleep is good. Read more
No.3232 Mr. K.S, Niigata, Japan
Reviewed on 2019-11-24
3 / 5-stars
I do not find a significant effect but I will continue to use it.
Reason(s) why I purchased from you: This product generates more negative ions than competing products. I thought that maintenance work would be easy. Detailed review: I do not find a significant effect but I will continue to use it. Read more
No.3388 Mr. O.S, Oshikawa, Japan
Reviewed on 2020-05-15
4 / 5-stars
I have been using it as a countermeasure against viruses. It gives me peace of mind.
Reason(s) why I purchased from you: I found your website on the first search results page. Detailed review: I have been using it as a countermeasure against viruses. It gives me a peace of mind. This is the 2nd unit. Read more
Customer Reviews on this page are just for your reference and they do not guarantee the efficacy/performance of the product.
Please consult a doctor if you need medical treatment. Customer Reviews written in Japanese are translated into English by Ion Trading.
Negative ions need to reach you. Some products on the market generate negative ions but no ion molecule can be detected at a distance of 1m (3.2ft) away and/or ions can travel in one direction only.
The Medical Ion Mini generates a massive amount of negative ions and covers a wide area for the best efficacy.
1. Massive Amount of Negative Ions
Generally, negative ion counts dramatically decrease as you go further away from the generator.
More than 8,500,000 (pcs/cc) negative ions are detected at the blow off point of the Medical Ion Mini and approx. 270,000/5,000 (pcs/cc) are detected at 1/3m (3.2/9.8ft) away from the device.
This means this model covers a wide area.
*Measured at 25C/50% by a dual coaxial cylinder type air ion counter and a flat type air ion counter. **Figures vary depending on air purification levels and other ambient conditions.
2. Ions spread in every direction
There are ion generators on the market which can disperse negative ions to the blow off direction only and a very few ions can be detected in other directions.
The Medical Ion Mini is designed to disperse negative ions to every direction to cover a wide area.
2000 (pcs/cc) can be detected at 2m (6.5ft) away in the 90 degree direction. You can enjoy negative ions!
Figures vary depending on air purification levels and other ambient conditions.
The amount of the negative ions, which the Medical Ion Mini produces, is too large to perform zero adjustment of the air ion couneter.
You can refer to Secrets Behind the Development
3. The Tripod Helps Better Negative Ion Distribution
3-1. You can manually adjust the ion emission angle.
Rotate the blow off point to the upward direction for better negative ion distribution when located close to the floor.
3-2. It keeps a distance from the desk/table.
You may or may not know but a lot of negative ions released from the generator are absorbed by the floor/wall.
The body of the Medical Ion Mini is mounted on the tripod to maintain a certain distance from the installation surface.
It is ideal that you install a negative ion generator as far away as possible from the floor/wall.
Stable Performance - Less likely to be influenced by ambient conditions
Maintains optimum performance under extreme conditions
The Medical Ion Mini is designed to maintain optimum performance under high temperature, high humidity or low temperature, low humidity conditions.
Many generators on the market are susceptible to temperature and humidity changes.
1. Easy Maintenance
You just clean the ionizing needles with a swab when they become dirty.
Caution: Be sure it is unplugged before you clean the needles.
2. Ion Detector for Test Operation (Ion Detector model only)
The Ion Detector that comes with this product enables you to make sure that the generator does generate negative ions.
You cannot tell if your negative ion generator is working properly without this detector because you cannot see ions with the naked eye.
How can I check if the device is working without the Ion Detector?: If audible sparking sounds are released from the 3 ionizing needles located on the front cover, it is generating ions.
3. No Wind Noise
No noise is generated because it does not have a built-in fan. Great for your bedroom!
4. Lightweight & Compact Design
You can take it with you wherever you go thanks to its lightweight (274g/9.6oz) and compact design.
5. Low Power Consumption
Its power consumption is only 4W or less.
Life Span - Ionizing needles ensure 5 years+ life span
Ionizing needles ensure 5 years+ life span
The ionizing needles emit negative ions and determine the life span of the Medical Ion Mini. Worn-out needles can lower the performance.
Our ionizing needles are made of ultra pure tungsten (99.999%) and ensure 5 years+ life span.
You can continue to use it after the life span of 5 years if negative ions can be detected by the Ion Detector.
Safety to Humans
1. Very little ozone
In contrast to electric discharge type negative ion generators (ionizers), the Medical Ion Mini is designed to minimize ozone production.
Ozone density < 0.001ppm
* IEC standard 32-1 of J60335-2-65 Measured at 25C/50% * Ozone concentration after 24 hour operation in a 7.425m2 room (Japan Quality Assurance Organization)
2. No positive ion
The Medical Ion Mini produces no positive ion that could not only be detrimental to negative ion production but also could be harmful to the human body.
* Measured at 25C/50% by a flat type ion counter and our measurement method
3. Nominal electromagnetic radiation
This ion generator emits very little electromagnetic radiation meeting the safety standard.
Many users say that they
have a good sleep
feel fresh air
wake up refreshed
less likely to get tired
chronic migraine has gone
Stress alleviation effects by the Ion House *3
*3 The Ion House was used to conduct this experiment. The Medical Ion Mini will produce a similar result as it has the same negative ion generation method as the now discontinued Ion House.
Dr. Ichiro Watabe, Assistant Professor of Hokkaido University Hospital
Rehabilitation Department *4
*4 Currently Professor of Aomori University of Health and Welfare
While further research is required to fully understand how negative air ions work on the human body, beneficial effects on health have medically been found.
We used a negative ion generator designed by Daito to conduct this experiment.
We did a double-blind test to observe 1-3 under light load conditions such as immersing in cold water and doing a simple calculation.
The sympathetic nerve function which has an effect on the skin temperature (peripheral blood flow)
Stress immune reaction
As a conclusion, the skin temperature (peripheral blood flow) significantly improves,
the cortisol value which shows the endocrinological hormone balance significantly decreases and the number of NK cells which shows the immunological stress index significantly decreases.
It is understood that negative ions generated by the generator help to ease the sympathetic nerve functional acceleration and stress is hormonally/immunology alleviated.
Q & A
1. What is the difference between the Medical Ion Mini and other negative ion generators?
Negative ions are dispersed to every direction.
Many negative ion generators found in the market disperse negative ions to one direction only and very few negative ions can be detected in other directions.
i.e. Negative ions do not reach you.
This means not only you cannot enjoy negative ion effects but also your generator just wastes electricity.
For example, if you have a heater and only the air around it can be warmed, you will look for a new heater which can distribute the hot air throughout the room.
The same goes with negative ion generators.
Negative ions have to be distributed throughout the room to enjoy negative ion effects.
It is often overlooked and little information can be found but it is one of the most important things to remember when you purchase a negative ion generator.
2. How long is the life span?
Ionizing needles ensure 5 years+ life span. The ionizing needles emit negative ions and determine the life span of the Medical Ion Mini.
Worn-out needles can lower the performance. Our ionizing needles are made of ultra pure tungsten (99.999%) and ensure 5 years+ life span.
3. Does it really work on the human body?
We cannot guarantee that the Medical Ion Mini will work on you because it is not a medical instrument.
It depends on your ambient conditions and many other factors.
However, we have received a lot of positive feedback from satisfied customers.
You can refer to the testimonials.
4. Do I need to purchase any consumables on a regular basis?
No, you do not.
5. How can I take care of it?
Worn-out ionizing needles can lower the performance.
6. How often do I have to clean ionizing needles?
We suggest once every 3-4 months.
7. How much ozone does it produce?
It produces 0.001ppm or less, which is less than 1/100 of the safety standard established by the Ministry of Health, Labour and Welfare. No worries at all!
8. Does it consume a lot of electricity?
Its power consumption is only 4W or less.
9. Where should I install it?
It should be located at least 100/30cm (3.2/1.0ft) away from the floor/wall to ensure the maximum performance. This is because negative ions can be absorbed by the floor/wall.
10. Can I continue to use it after the life span of 5 years?
Yes, you can if negative ions can be detected by the Ion Detector. If not detected, you need to send us the Medical Ion Mini for replacement of the worn-out ionizing needles.
11. Can you tell me about the replacement work for worn-out ionizing needles?
We can replace the needles at approx. US$60 including shipping.
Shipping your Medical Ion Mini to us is at your own expense.
Please contact us when replacement work is needed.
We complete the replacement work and ship to you within 3 days of receipt of the Medical Ion Mini.
12. The Medical Ion Mini generates more negative ions than other generators on the market. Doesn't it have a negative effect on the human body?
No study suggests that a large amount of negative ions have a negative impact on the human body.
13. How does it work in a smaller room than 16.5m2 (177 ft2)?
You can enjoy the highly concentrated negative ion density in a smaller room. This is why we recommend the Medical Ion Mini even if your room is smaller than 16.50m2 (177 ft2).
14. How can I enjoy negative ions in my 280ft2 room?
We suggest you should install 2 units (of the Medical Ion Mini) as 1 unit covers up to 177ft2.
It is great if you can install the generators so that they are close to where human activity takes place.
15. Is it OK to install this generator without using the tripod?
We suggest you should mount it on the tripod whenever possible. This is because the negative ions can be absorbed by the table/floor/desk where the device is placed. i.e. The tripod included in the package is designed to keep a certain distance between the negative ion blow off point and the installation surface.
16. Can I use this ion generator in my country? I think the voltage and AC plug are different from Japan.
You can use the Medical Ion Mini in most countries as it works with AC100-240V and comes with the AC plug adaptors for the countries.
17. Can I turn it on 24/7?
Yes, you can.
High Density Negative Ion Generator, Ionizer - Medical Ion Mini without Ion Detector
Negative ion generation method
Air Ionization Electron Emission Method
(Pat No. PCT/JP2002/008541)
Material of radiation needle
Virgin tungsten (99.999%)
16.5 m2 (177 ft2) *5
4W or less
W140xH80xD40 (mm) / W5.5XH3.1XD1.5 (inches)
Negative ion count (pcs/cc)
Blow off point: 8,500,000+*6
1m (3.2ft) away: 270,000+*7
Positive ion count (pcs/cc)
Blow off point: 0*7
0.001ppm or less*8
·110/240VAC compatible AC adaptor
·Ion Detector for test operation (Ion Detector model only)
·Dry batteries for Ion Detector
2 years from the date of purchase
*5 Varies depending on the structure of the room, nearby electronic appliances, purification level of air, etc.
*6 Room temperature 23C, Humidity 30% R.H. Measured by a double coaxial cylinder type ion counter and our measurement method.
*7 Room temperature 23C, Humidity 30% R.H. Measured by a flat type ion counter and our measurement method.
*8 IEC standard 32-1 of J60335-2-65 measured at: 25C, 50% R.H. in a 7.45m2 (80 ft2) box after 24 hours running. (JAPAN QUALITY ASSURANCE ORGANIZATION)