D-Guard 5

Anti-Microbial Air Purifier

D-Guard 5

with Argenzil Silver-Ions

D-Guard 5

Medical Grade

Anti-Microbial Air Purifier


Air Delivery Rate(CADR)

Tips: CADR stands for clean air delivery rate. It refers to the total amount of 

clean air output after filtration. The unit is 1159.92m3/h.


CADR of particulate matter- Dust

CADR of gaseous contaminants - HCHO, TVOC

D-Guard 5 (CADR):1159.92m3/h

Suggested coverage area:100m2

MULTIPLE filtration layers:

Effectively remove PM0.3, PM2.5, TVOC, HCHO and microbes.

Industrial grade ultrafine fiberglass,

99.99% removal efficiency for particle size above 0.3μm.

MULTIPLE operating speed:

User friendly touch screen panel for operating speed controlling.











D-Guard 5
Dimensions (WxHxD)/ Net weight
Power supply
1PH/220V/50Hz | 1PH/220V/60Hz
Control method
Touch screen panel
Power consumption
Air flow
1.196/0.56/0.318m/s | 1.292/0.614/0.396m/s
Noise level (Sound pressure)
CADR of Particulate Matter
Energy efficiency of Particulate Matter
5.58m3/(h*W)/High efficiency
PM2.5 removal efficiency 30m3,20min
Coverage area
Certificate and test report
AHAM / Energy Star / EMC / CE / Jiangsu Provincial Center for Disease Control and Prevention Report
Microbes removal efficiency
Staphylococcus Albus 8032 removal efficiency 20m3,2h
Natural bacteria 45m3,2h
3 Years

Medical Grade Anti-Microbial Air Purifier

D-Guard 5

Specially designed for medical and
health center

Fever test station, transfusion room, office, nurse station, 
public area, emergency ward, neonatal room, pediatric ward, 
chemotherapy ward, burns unit, etc.



Throughout the global medical and health sector, in North America and European 
countries particularly, silver ion sterilization technology has been well developed 
and implemented. Application of silver ion is proven stable with no side effects. It 
has been recognized as the safest sterilization agent by NASA and is widely 
applied in biotechnology, medical health, aerospace warships and other fields.

For years, MayAir has been introducing its advanced Argenzil Silver-ions sterilizing 
technology for various application and industries. Integrated with ultrafine fiber glass 
filter material, the technology can inhibit the growth and reproduction of bacteria and 
microorganisms in the air by interfering the synthesis of their microbial cell wall and 
protein. In the meantime, air can be well purified. The removal rate of particles size 
above 0.3 μm is as high as 99.99%.


First layer: Prefilter- Filtration of big particles

Bigger particles, fibers and fur are filtered through the prefilter, ensuring the effectiveness and lengthen- ing the life span of the HEPA filter.

Second layer: Chemical filter- Adsorption of TVOC and formaldehyde

Gaseous contaminants like HCHO, benzene and TVOC will be adsorbed by the activated carbon filter.

Third layer: HEPA filter with advanced Argenzil silver-ions sterilizing system- Air sterilization and filtration of PM2.5, PM0.3

The antimicrobial high-efficiency filter adopts MayAir’s advanced Argenzil silver ion sterilizing technology to effectively eliminate all kinds of bacteria, viruses and microorganisms, Secondary pollution is eliminated at the same time. The removal rate of particle size above 0.3μm can reach as high as 99.99%.

Traditional air filter


Air filter with silver-ions


The filter is composed of advanced antimicrobial active substances and special designed fiber media. When bacteria, viruses and
other microorganisms come into contact with the surface of the filter material, the active substances will inhibit and kill them..

1. A layer of antimicrobial active substance is attached to the surface of the filter media.

1. A layer of antimicrobial active substance is attached to the surface of the filter media.

1. A layer of antimicrobial active substance is attached to the surface of the filter media.

1. A layer of antimicrobial active substance is attached to the surface of the filter media.


With more than 20 years’ experience in the air purification industry, MayAir clean air technology stands 
proven. We have been continuously providing total clean air solutions and services for biomedical industries, 
semiconductor electronics industries, LCD industries, automotive industries, pharmaceutical industries, food 
industries, petrochemical industries, as well as the commercial and residential buildings. 
MayAir has established a full-coverage of services network around Malaysia, China, Singapore, Japan,

Thailand, Vietnam, India, Philippines, Indonesia, Bangladesh, Middle East, Germany, England, France, Australia and Egypt etc. With over 30 sales offices and 5 manufacturing factories globally, we strive to supply the

best and respond on time. 
MayAir’s medical grade anti-microbial air purifier D-Guard 5 is specially designed and developed to cater for 
the indoor air quality assurance in medical field. It is our ultimate mission to provide the best products and 
solutions for the sake of your health and quality of life.




MayAir is committed to improve the air quality of medical and health center as to reduce the risk of cross infection and postoperative infection 
in hospitals. At the same time, MayAir strives to establish a scientific and GMP compliant sterile pharmaceutical production environment. As a 
fact, MayAir’s clean air solutions have been implemented in more than 5000 pharmaceutical enterprises and 6000 hospitals globally. 

Air Force General Hospital, China

Navy General Hospital, China

Beijing Tongren Hospital

Peking Union Medical College Hospital

The Military General Hospital of Beijing

The Shanghai Children's Hospital

International Peace Maternity and Child Health Hospital

The First Affiliated Hospital of Zhengzhou University

St. Marie Hospital

China-Japan Friendship Hospital

Huashan Hospital

Jiangsu People's Hospital

Chongqing Southwest Hospital

Changhai Hospital of Shanghai

The First Affiliated Hospital of University of South China

The First Affiliated Hospital of Chongqing Medical University

XuanWu Hospital Beijing

Zhongda Hospital Southeast University (Jiangbei)

Fudan University Shanghai Cancer Center

Chinese People's Liberation Army Hospital

PKU Healthcare

Yanbian University Hospital

Jiangsu Province Hospital of TCM

 Wuxi People’s Hospital

Wuhan Tongji Hospital

Guangzhou Nanfang Hospital

Zhejiang Cancer Hospital

Guangzhou Clifford Hospital

General Hospital of Chinese People’s   

Armed Polic

Nanjing Agriculture University of


Sir Run Run Hospital Nanjing

Shanghai Ninth People’s Hospital

The Fifth People’s Hospital of Datong

Chinese Academy of Science

Weifang People’s Hospital

Zhibo Gaoxin Hospital

Puyang Hospital

Harbin Vets

Nanfang Hospital

Anhui Chest Hospital

The 7th People’s Hospital of Zhengzhou

Shanghai Delta Health

Shanghai Chuansha Hospital

Guangzhou Zhujiang Hospitial

Lanzhou Institute of Biological Products

Children’s Hospital of Soochow University

Wuhan Jinyintan Hospital

Wuhan Union Hospital

Affiliated Stomatological Hospital of Nanjing, Medical University 
Center of Systems Medicine, Chinese Academy of Medical Sciences, 
The First Affiliated Hospital of Soochow, University Forces, 
The First Affiliated Pingjiang Hospital of Soochow University, 
The First Affiliated Hospital of Sun Yat-Sen University, 
Biomedicine R&D Lifescience Park Zhongguanchun 
Center for Excellence in Molecular Cell Science Shanghai, 
Hefei Tianyi Biology Technology Research Institute, 
Lanzhou Veterinary Research Institute, 
Beijing Fiveplus Molecular Medicine Institute, 
National Institute of Biological Science Beijing, 
Chengdu Institute of Biological Products, 
Hainan Institute of Biological Products

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