Disinfection of Office Chairs and Teacups

Disinfection of office chairs and teacups requires targeted methods for each item. The specific operations are as follows:

I. Cleaning and Disinfection of Office Chairs

1. Preparation of Items
   Prepare chairs, cleaning cloths, disinfecting cloths, cleaning buckets, disinfecting buckets (with lids), clean water, gloves, masks, and work clothes in advance. A lid on the disinfecting bucket can reduce the volatilization of disinfectants, while gloves and masks protect the operator from exposure to contaminants.

2. Cleaning Steps

• Wiping Order: Follow the order of "seat surface → backrest → chair legs → chair edges", with the front edges wiped last. This order prevents secondary contamination of already cleaned areas.
• Use of Cloths: After wiping the seat surface, turn the cloth over to wipe the backrest; change the side of the cloth after wiping each chair leg; wipe from top to bottom with force to ensure no residue remains in the crevices.
• Precautions: Avoid dropping the cloth during operation to prevent cross-contamination; if the chair has leather or fabric materials, choose a neutral cleaner according to the material properties to avoid damaging the surface.

3. Disinfection Treatment
   If disinfection is required, wipe high-contact areas such as the seat surface and armrests with a chlorine-containing disinfectant (e.g., 84 disinfectant, diluted according to the instructions) or 75% alcohol after cleaning. Allow it to act for 30 minutes, then wipe off the residual disinfectant with clean water.

II. Disinfection Methods for Teacups

1. Infrared Disinfection (Preferred)
   Sterilize by high temperature (above 120°C), suitable for heat-resistant teacups (e.g., ceramic and glass materials). Commonly found in disinfection cabinets, it effectively kills bacteria, viruses, and other microorganisms.

2. Boiling Disinfection
   Fully immerse the teacup in boiling water and maintain at 100°C for 5-10 minutes. This method is simple and easy, but note whether the teacup material is heat-resistant to avoid deformation or breakage.

3. Chemical Disinfection
   Soak the teacup in a chlorine-containing disinfectant (e.g., a solution with an effective chlorine concentration of 250mg/L) for 20-30 minutes, then rinse thoroughly with clean water. Suitable for plastic or metal teacups that are not heat-resistant, but the disinfectant must be prepared strictly according to the ratio to avoid residue.

4. Ultraviolet Disinfection
   Use an ultraviolet lamp to irradiate the surface of the teacup, ensuring sufficient irradiation time (usually more than 30 minutes) and no obstruction. This method is effective for inactivating bacteria but has limited effects on viruses, often used in combination with other methods.

III. Recommended Disinfection Equipment for Teacups
There are various specialized disinfection cabinets on the market, such as the Demashi small built-in ultraviolet high-temperature drying model (849 yuan), which combines high-temperature and ultraviolet functions; and the Demashi mini high-temperature disinfection cabinet (419 yuan), suitable for small spaces. When purchasing, confirm the equipment capacity, disinfection method, and safety certification to ensure it meets usage requirements.