One. What is the best way to disinfect school desks and chairs?
Schools typically use chlorine-based disinfectants at concentrations of 250 mg/L～500 mg/L, 75% alcohol disinfectants, or other disinfectants, and employ wiping methods for disinfection. Common disinfectant concentrations and preparation methods for school desks and chairs include:
1、Preparation of a chlorine-based disinfectant with a chlorine concentration of 500mg/L:
84 Disinfectant (with a valid chlorine content of 5%): Dilute the disinfectant with water at a ratio of 1:100.
Disinfectant Powder (with an effective chlorine content of 12%, 20g/package): 1 package of disinfectant powder added to 4.8 liters of water;
(Chlorinated effervescent tablets (containing 500mg of effective chlorine per tablet): 1 tablet dissolves in 1 liter of water.)
Sodium dichloroisocyanurate (with an effective chlorine content of 56-61%): Mix with water at a ratio of 1:300-500 for disinfectant use.
2、75% Ethanol Disinfectant: Use directly.
Instructions for using desk and chair disinfectants: (1) All disinfectants should be prepared and used according to the product instructions and label, ensuring the correct concentration to kill intestinal pathogens. (2) Chlorinated disinfectants can cause irritation to the skin and mucous membranes. When preparing and using, wear a mask and gloves, and children should not come into contact with them. (3) When using ethanol-based disinfectants, keep away from fire sources.
Two. Methods for disinfecting student desks and chairs.
1. First, use a dry cloth to remove dust and debris from the desks and chairs. If necessary, use a slightly damp, soft cloth to gently wipe the surfaces. Avoid using alkaline solutions such as soapy water or laundry detergent.
2. Place the student desks and chairs that require cleaning and disinfection in the cleaning area, ensuring they are carefully lifted and placed, avoiding any forceful pushing or pulling, which could dislodge or damage the legs.
3. Wear gloves, and use a cloth dampened with disinfectant or sprayed with disinfectant to clean the edges of the student desks and chairs. Ensure thorough cleaning and removal of any residue.
4. After cleaning the edges, wipe the flat surfaces of the student desks and chairs (including the tabletop and seat) in the following order: from inside to outside, and from top to bottom.
5. After wiping, allow to sit for 20-30 minutes, then use a clean, slightly damp cloth to wipe away any remaining disinfectant residue from the desks and chairs. Finally, allow to dry.