How long does it take for the UV lamp to disinfect?

Published Date: 2023-03-07 14:46:24 Views: 225

How long does it take to disinfect a UV sterilization lamp?

How long does it take for a UV lamp to disinfect? This must be analyzed according to the specific application, such as air disinfection and disinfection of objects, which generally require 30-60 minutes of disinfection to achieve a better effect.

The mechanism and killing effect of UV light on micro-organisms is mainly the photochemical conversion of thymine. Sterilizing UV light acts primarily on DNA and can cause the adjacent thymine bonds on a DNA strand to form a dimer, which in turn causes the microbial DNA to lose its ability to transform and die.

When using UV lamps for air disinfection, doors and windows should be closed and the presence of other people should be avoided. In general, a 30W UV lamp at an effective distance of no more than 2m and an exposure time of 30-60 minutes will provide good disinfection.

When using the lamp to disinfect objects, the 30W UV lamp should be used for 20-30 minutes per side. When disinfecting objects, the objects should be spread out to reduce shading and the distance between the objects and the lamp should be reduced to an effective distance of 25-60 cm.

In addition, UV lamps can be used to disinfect COVID-19, usually for 30-60 minutes, and can be used for indoor disinfection of people recovering from COVID-19 infection. However, when using the UV lamp, the operator should stay away from the area exposed to the UV lamp to avoid radiation damage. If the body is sensitive, brief exposure to UV light can cause redness, itching, and allergic papules, which can be harmful, so care should be taken to ensure safety.