Forum Posts

• lu mkl

  • 49 posts
  Posted in the topic the distance and time of disinfection when using a UV sterilizer in the forum Programming

  December 30, 2021 2:28 AM EST

  In the traditional sense, ultraviolet light refers to light with a wavelength of 400~10nm in sunlight. With the continuous advancement of science and technology, ultraviolet light has been widely used in food, electronics, semiconductors, liquid crystal displays, plasma TVs, crystal vibrators, precision devices, and chemicals. , Medicine, medical treatment, biology, beverage, agriculture and other fields, and play different roles. Physiologically, UVA ultraviolet rays are an important way to treat skin diseases; in the biological field, ultraviolet rays can promote plant growth and trap mosquitoes. And in terms of sterilization and disinfection, ultraviolet rays also have extraordinary effects.

  

  Therefore, in daily life, when using a sterilizer, pay attention to the distance and time of Sterilizer.

  1. When using an ultraviolet sterilizer, the time for people to disinfect it should be about 1 meter, generally about 30 minutes. If the disinfection area of ​​a 30W ultraviolet lamp can reach about 16 square meters, and when we use the ultraviolet lamp for disinfection, we must close the doors and windows while keeping the room clean.

  2. The distance between the ultraviolet sterilizer and the roof cannot exceed 1.5 meters, the distance between the ground and the ground cannot exceed 2.5 meters, and the distance from the disinfectant is about 1 meter. The effective disinfection area is 1.5 to 2 meters around the ultraviolet lamp, and the time can reach 30min, or longer. The inner line of the germicidal ultraviolet lamp belongs to the c wave, its wavelength is between 200~270nm, and the central wave length of the sterilization is 253.7nm, especially when the ultraviolet rays are strong and the irradiation time is sufficient, it can directly kill all tiny organisms.

  This post was edited by lu mkl at December 30, 2021 2:28 AM EST
• lu mkl

  • 49 posts
  Posted in the topic Sterilization effect of ozone generator in the forum Programming

  December 17, 2021 1:19 AM EST

  When the ozone concentration is 0.02ppm, people with a sensitive sense of smell can detect it, which is called the sensory threshold. When the concentration is 0.15ppm, it is the olfactory threshold, which can be smelled by most people, and it is also a health standard point. When the concentration reaches 1-10ppm, it is called the irritation range. In fact, the safe use of ozone can completely ensure that human health is not endangered. Ozone has been used for more than one hundred years, and so far there has been no fatal accident due to ozone poisoning in the world.

  

  The sterilization effect of ozone is most ideal when the humidity is 70-80%, and the effect is poor when the humidity is lower than 45%. Therefore, it should be used in the environment, especially in the sterile room and ward of the pharmaceutical workshop. Increase humidity appropriately. #Sterilizer

  When using ozone for air disinfection, attention should be paid to: the sterilization effect of ozone K is the product of the actual concentration of ozone C and the action time T, namely K=C×T, and the actual concentration of ozone C reaches the sterilization threshold concentration Cmin, even if the time is extended, In actual operation, there is probably no sterilization effect. Ozone should be used for air disinfection according to different application spaces and different sterilization and disinfection purposes, and ozone generating devices with different ozone production and ozone concentration should be configured. The ozone generation concentration refers to the concentration in a fixed volume for 30 minutes by natural diffusion. The unit is mg/M3. The ozone production is calculated from the accumulation of ozone production concentration and time. Ozone production and ozone production concentration are the most basic parameter standards. Therefore, ozone disinfection products for the purpose of air disinfection should be marked with disinfection concentration and disinfection time indicators. There are also two general indicators, namely the ozone safety indicator of the application space and the product life indicator, etc., which also need to be indicated to the user. Such as general deodorization, deodorization, etc., the concentration should generally not exceed 0.05ppm. If it is used for indoor sterilization, it is generally controlled at 0.1-1ppm; the surface of the object or the ward area generally requires a higher concentration.

  Air disinfection type Ozone Sterilizer selection. Since ozone can only be produced on-site, the most economical and mature way to produce ozone is corona discharge, and most ozone generators used for air disinfection use ceramic chip high-frequency discharge mode, which has simple structure and performance. It has the advantages of reliability, low operating cost and flexible adjustment.

  The safety of ozone air disinfection. Ozone safety In a wide range of animal and human tests, the main exposure route is inhalation. Continuous and long-term inhalation tests show that ozone is not carcinogenic (NTP, 1995); however, it has a significant stimulating effect on the respiratory system of animals and humans. Exposure to the environment can affect respiratory function. Therefore, we suggest that the use of ozone to disinfect the air should be carried out in an unmanned environment, and personnel can enter only half an hour after the disinfection is completed.

• lu mkl

  • 49 posts
  Posted in the topic Air purifier disinfection effect in the forum Technology

  December 6, 2021 10:22 PM EST

  The quality of medical air purifiers is a good embodiment of the disinfection effect. Therefore, under the same machine premise, a good disinfection effect and a faster purification efficiency mean the lower the cost of use, which can reduce the cost of use for enterprises. , So in actual operation, how can we maximize the effectiveness of medical air purifiers Ozone Sterilizer? Next, Wei Yi will give you an introduction.
  
  1. Two points should be paid attention to when choosing the starting time of medical air purifier:
  
  1) Dynamic disinfection: the purpose is to control and reduce the secondary pollution of ambient air during personnel activities.
  
  2) Preventive disinfection: regular disinfection 1 to 2 times a day, 2 hours each time, preferably before and after get off work.
  
  2. During the use of the equipment, attention should be paid to the airtightness of the space, doors and windows should be closed during the disinfection process to ensure good airtightness in the room. In addition, the movement of personnel should be reduced to ensure the disinfection effect.

  
  
  3. The use of medical air purifiers is effective for the air, and has no disinfection effect on the surface of people and objects. If there is a lot of dust on the surface of the object in the space, secondary dust will be generated when the equipment is working.
  
  4. Medical air purifiers of different types of air volume have corresponding disinfection space ranges. Therefore, we should pay attention to the size of the space when choosing, otherwise it will affect the disinfection effect.
  
  5. The air inlet and outlet for disinfection of the equipment must be free of obstructions to allow good air circulation.
  
  Finally, the editor will teach you a little bit. In the process of medical air purifiers uv sterilizer box, it is necessary to replace the filter regularly. The general cycle is determined by the use environment. If it is not replaced in time, it will affect the disinfection effect and cause secondary pollution.