The use standard and inspection method of quaternary ammonium disinfectant

- Jul 07, 2020-

The use standard and inspection method of quaternary ammonium disinfectant


The cation absorbs negatively charged bacteria through the electrostatic force, hydrogen bonding force, and hydrophobic binding between surfactant molecules and protein molecules, and accumulates on the cell wall, causing a chamber resistance effect, which leads to the inhibition of bacterial growth and death; at the same time Hydrophobic alkyl groups can also interact with the hydrophilic group of bacteria, change the permeability of the membrane, and then lysis occurs, destroying the cell structure, causing cell lysis and death. This kind of fungicide has the characteristics of high efficiency, low toxicity, not easy to be affected by the change of pH value, easy to use, strong peeling effect on the mucus layer, stable chemical performance, good dispersion and corrosion inhibition effect.


Application

1.) Applicable to the disinfection of the environment and the surface of objects (including fibers and fabrics).

2.) Suitable for the disinfection of food processing equipment and lifting workers, but not for the disinfection of fruits and vegetables.

3.) Applicable to hand sanitation and yellowing. The disinfectant compounded with alcohol can be used for surgical disinfection of hands.

4.) The quaternary ammonium salt disinfectant is suitable for the disinfection of skin (including small wounds) and mucous membranes, and the antiseptic compounded with alcohol can be used for the preoperative disinfection of skin and mucous membranes.

 

How to use

1.) Disinfection of non-porous hard surfaces

① Cleaning objects: rinse, wipe or soak for disinfection, use disinfectant solution with quaternary ammonium salt content of 200mg/L~1000mg/L for 1min~10min spray disinfection, disinfect with quaternary ammonium salt content of 800mg/L~1200mg/L The solution works for 5min~10min.

②Contaminated objects: rinse, wipe or soak for disinfection, use disinfectant solution with quaternary ammonium salt content of 400m/L~1200mg/L for 5min~20min; spray disinfection, disinfect with quaternary ammonium salt content of 1000mg/L~2000mg/L Solution for 10min-30min.

③ For sterilization of items that touch food, the quaternary ammonium salt of the disinfectant should not exceed 1000mg/L. After sterilization, it must be rinsed with water before touching the food.

 

2.) Disinfection of porous surfaces

① Cleaning objects: soak and disinfect, use disinfectant solution with quaternary ammonium salt content of 400mg/L~1200mg/L for 5min~20min; spray disinfection, use disinfectant solution with quaternary ammonium salt content of 1000mg/L~1200mg/L for 5min~ 20/min;

②Pollution object: immersion disinfection, disinfection solution with quaternary ammonium salt content of 600mg/L~1600mg/L for 5min~30min; spray disinfection, disinfection solution with quaternary ammonium salt content of 1000mg/L~2 000mg/L for 10min ~30 min. Fibers and fabrics can absorb quaternary ammonium salts. When disinfecting, the number of items to be disinfected should be controlled, and the dosage should be appropriately increased or the action time should be extended. After disinfection, they should be cleaned.

3.) Disinfection of hands, skin and mucous membranes

① Sanitation and disinfection of hands: the cleaned objects are wiped or soaked with a disinfectant solution with a quaternary ammonium salt content of 400mg/L~2000mg/L for 1 min; the contaminated objects are quaternary ammonium salt content of 600 mg/L~2 000 mg/L Wipe or soak the disinfection solution for 1min.

②Disinfection of skin and mucous membrane; rinse and disinfect, use disinfectant solution with quaternary ammonium content of 400 mg/L~1 000 mg/L for 2 min~5 min; wipe or soak disinfection, use quaternary ammonium content of 500 mg/ The disinfection solution of L~2 000 mg/L works for 2 min~5min.

③Disinfection of small wounds (fine abrasions on the skin surface). Rubbing: coated with 1 000 mg/L~1 300 mg/L benzalkonium chloride or 1 000 mg/L~2000 mg/L benzalkonium chloride Wipe or rinse for 1min~5min.

quaternary ammonium salt detection


Detection method

Test paper for quaternary ammonium salt detection: 0-10-50-100-250-500mg/L

1.) Take out a test strip and quickly cover it (do not touch the reaction area with your hands)

2.) Partly fill the reaction area with the test solution for 5 seconds, take out and throw off excess water beads

3.) Comparing with the color card within 5 seconds, the color close to the color block is the density value