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1、 Three major reasons that must be considered for particle size
→Affects disinfection effectiveness
Coarse particle size (droplet like): suitable for vertical surfaces (such as walls and horse barrels), with long hanging time and full function.
Fine particle size (mist like): Covering the surface more evenly (such as countertops, floors), but may evaporate quickly and require additional spraying.
→Related security issues
Fine atomized particles: easily suspended in the air, inhaled and irritating to the respiratory tract (especially in a closed environment in the bathroom).
Coarse water droplets: splashing onto metal parts or electrical gaps, accelerating corrosion or short circuiting.
→Determine residual risk
If extremely fine spray is used in the food processing area, the contaminated food materials may be dispersed, and the residues are difficult to wash thoroughly.
2、 Scenario based particle size selection guide
→Kitchen/bathroom hard surface
Select equal size spray (semi atomization): balance the covering force and prevent inhalation, and avoid the operation of spray gun less than 30cm from the surface.
→Disinfection of food processing equipment
Disable ultrafine atomization: prevent infiltration into precision structures such as equipment bearings and circuit boards.
→Prioritize selecting controllable particle size nozzles: When spraying the equipment casing, adjust to medium coarse particle size to reduce scattering.
Environment with metal/electrical components
It is necessary to increase the particle size (close to a water column shape): precise targeted spraying to avoid sensitive components.
3、 Related restrictions on the use of sodium hypochlorite spray guns
→Use with caution for fine mist nozzles in certain scenarios
Storage rooms and basements with poor ventilation;
Surrounding the children's activity area.
→Defects in coarse-grained nozzles
Disinfectant consumes quickly and is prone to flow and waste;
Not suitable for porous materials such as wooden boards and cement joints, with insufficient permeability.
| Factor | Key Considerations |
| 1. Impact on Efficacy | • Coarse spray: Better for vertical surfaces (walls, toilet bowls); longer contact time. • Fine mist: More even coverage on flat surfaces (countertops, floors); may require reapplication due to rapid evaporation. |
| 2. Safety Implications | • Very fine mist: Easily inhaled in enclosed spaces (bathrooms, storage rooms); respiratory irritation risk. • Oversized droplets: May splash onto electrical components/metal parts, causing corrosion or short circuits. |
| 3. Food Area Risks | • Avoid ultra-fine mist in food processing: Can drift onto ingredients or infiltrate equipment seams/bearings. • Coarser droplets recommended near food contact surfaces. |
| 4. Scene-Based Selection | • Kitchen/bathroom: Medium particle size (balanced coverage and safety). Keep nozzle >30cm from surfaces. • Near electronics/metal: Use coarse spray (near-stream) to target specific areas only. • Porous surfaces (wood, concrete): Avoid coarse spray – poor penetration. |
| 5. Usage Restrictions | • Fine mist not recommended in: Poorly ventilated areas, children’s zones, or around sensitive machinery. • Coarse spray limitations: Higher liquid consumption; uneven coverage on smooth large surfaces. |
| Critical Rule | Never use fine mist in confined spaces or near food preparation areas. Adjustable nozzles strongly preferred for multi-scene use. |
