How to choose a steriliser against coronavirus?

As concern about coronavirus grows, disinfactant, hand sanitizer and sterilising machines are in high demand. Let’s talk about how to choose the right steriliser during epidemic.

UV and Ozone technology are commonly applied for sterilisers. Both have very powerful sterilization. Have you ever wonder how ozone and UV differ? If you want to buy a sterilizer at home, which one would be the best choice?


UV technology what we mentioned actually is UV-C light, the wavelength is between 200 and 280 nanometers. It can kill most of dangerous bacteria and viruses from MRSA to E. coli. Normally, when you use UV lamp for disinfection, you should put the objects closely to the lamp (within 1,5m) . The effectiveness of UVC depends on the length of time a microorganism is exposed to UV (within 30 – 60 mintues at least). Otherwise, it’s useless.

Dust and films coating the bulb will lower UV output. Therefore, bulbs require periodic cleaning and replacement to ensure effectiveness. The lifetime of germicidal UV bulbs varies depending on design. 

Caution: Skin exposure to germicidal wavelengths of UV light can produce rapid sunburn and skin cancer. UV can damage the retina of the eye as well. Remember to leave from the room when using UVC for sanitization. It’s dangerous!


Ozone, the most powerful disinfectant, is 50 times more effective at disinfection compared to the most popular disinfectant – chlorine, and the effects of its action are visible 3,000 times faster. It has been widely applied for water purification, air sterilization and food storage over hunderd years.

Ozone can kill 99.9% bacteria and viruses. It’s been proven can kill SARS and MERS Coronavirus. One obvious benefit of ozone is that the reaction /sterilization is instantaneous as the gas contacts with air/object surface. Ozone has a 20-30 minute half-life in the air meaning that its concentration will break down quickly. 

The only concerns of Ozone is the safety in use. Depends on the contamination level, 0.5 – 2.5 ppm ozone level is adequate for air disinfection. An accuracy control of the ozone concentration is one of the key indicators of ozone sterilisers. Caution: DON’T USE INDUSTIAL OZONE GENERATOR TO DO DISINFECTION AT HOME. Ozone abuse may cause throat irritation, cough, chest pain, shortness of breath.

Oshiner Ozone Air Purifier, with timer included, it can be easily operate and avoid overusing of ozone. The ozone concentration is strictly controlled under U.S. & EU Standard that you don’t need to worry about overusing the ozone and affecting health.

Kind Reminder: If you have asthma or other respiratory illness, or sensitive to the ozone smell, we kindly suggest you to be away from the room when the unit works.

Ozone Disinfection for New Coronavirus (COVID19)

Why do we need air disinfection?

The outbreak of new coronavirus (COVID19) worldwide has increased people awareness of the transmission of respiratory diseases in indoor environment. Evidences show that CORONAVIRUS could survive on respiratory droplets for up to several days and people breathing air containing these droplets will be at high risk to get the diseases. Therefore, there is a need for a reliable and efficient air disinfection method to decontaminate at home and high-risk areas.

Disinfection Methods by UV, HEPA Filter, Chemicals & Ozone

The most common air disinfection method is using ultraviolet (UV) radiation. UV radiation (UV-C) kills bacteria and viruses by damaging the DNA/RNA of the cells of microorganisms. However, UV radiation could only disinfect air close to the lamps as UV light has limited penetration capacity.

Another well-known air cleaning method is to use HEPA filter. HEPA filter can capture particulate sizes down to 0.3 microns, and so bacteria with size larger than 0.3 microns could be trapped in the filter, which is very effective in reducing airborne bacteria in air. But it’s useless to remove viruses.

Chemical disinfectants could also be useful for air disinfection, usually by means of spraying. However, these chemical disinfectants are generally difficult to decompose. It will leave toxic chemical residues that are hazardous to human health.

Ozone (O3) applications has been recognized as a safe disinfectant for water and food for many years now. It can be safely used in both gaseous and aqueous forms as an antimicrobial agent in the treatment, storage, and processing of foods, including meat and poultry. It is a very powerful disinfectant. Ozone could also be an effective air disinfectant. It can sharply kill 99.9% bacteria and viruses in air to purify the the room hygienically clean. As viruses are generally more susceptible to ozone than bacteria, it could assume that all viruses are killed if large percentage of airborne bacteria are removed.

Below is the disinfection efficiency of ozonation at different concentration in a room of 15㎡, which has been tested for 20 minutes. The results show that ozone is effective in reducing airborne bacteria.

Reduction of Airborne Bacteria after Ozonation

Ozone conc. 0,5ppm2,5ppm5ppm
Before Ozonation590 CFU/m³615 CFU/m³ 550 CFU/m³
After Ozonation170 CFU/m³ 40 CFU/m³ 55 CFU/m³

However, for safety reason, excessive high concentration ozone should be avoided and the lowest ozone concentration that could kill most of the microorganisms should be selected as optimum. Depends on the contamination level, 0.5 – 2.5 ppm ozone level is adequate for air disinfection. Also kindly note that please stay away from the room when the ozone concentration is above 0,1ppm and return back after half an hour.

Freshen the Bathroom ASAP!

You cannot imagine how many germs hidden in your bathroom. You might easily discover the obvious dirts from the toilet seat, the floor, or the wall. But the worst is you have no idea of how dirty of your toothbrush, the towel, the makeup brushes, the shaver and others in the room.

The conventional air purifier is only to eliminate the odor, dust or microscopic air pollutants via filters and fan, which can hardly sterilize the germs and bacteria in the air. Your toothbrush might have at least 200,000 bacteria per square inch. It could be dirtier than your toilet.

                                                                                                                                                                    [Picture from Internet]

To improve IAQ (Indoor Air Quality) is the top priority to keep your bathroom at cleanest! 

Oshiner Mini Air Purifier, uses the ozone technology to clean the air with no filters and kill the odor & harmful germs safely. 


♦ No Filters to Replace

♦ Small & Tiny – It’s just like an iPhone 7 Plus!

♦ Touch Screen to Easily Operate

♦ Timing Switch to Safely Control

♦ Low Energy Consumption

The air purifier is very tiny that it’s just like an iPhone 7 plus. With the plug-in design, it’s very space-saving. There’re 3 timing options, which is lightly to be used. And the ozone concentration is strictly controlled under 0,1ppm (US & EU Standard). You don’t need to worry about overusing the ozone and affect the health.

What you wait for? Start to freshen your bathroom NOW!

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