IEC 60825
Safety of Laser Products
Ikmanda RoswatiPh.D.Indonesia
Ultrafast Laser Physics and Material InteractionsPublished
Dec 16, 2025
Environmental Dust Layer Contamination
Environmental dust, it comprises fine particulates from air. This contamination forms by settling on surfaces after atmospheric exposure, and thus creates universal thin layers on all materials. Distinct from thicker residues by its light adhesion and variable buildup, it clings evenly yet reaccumulates quickly, thus poses removal challenges through mechanical means, so laser cleaning ablates selectively and restores cleanliness effectively.
Safety Information
Critical safety data for laser removal operations
Fire/Explosion Risk
low
Toxic Gas Risk
low
Visibility Hazard
moderate
Required Personal Protective Equipment
Respiratory Protection
half_mask
Eye Protection
goggles
Skin Protection
gloves
Hazardous Fumes Generated
| Compound | Concentration | Exposure Limit | Hazard Class | Status |
|---|---|---|---|---|
| Carbon Monoxide | 5 mg/m³ | 29 mg/m³ | toxic | ✓ Within Limit |
| Carbon Dioxide | 900 mg/m³ | 9000 mg/m³ | toxic | ✓ Within Limit |
| Polycyclic Aromatic Hydrocarbons (PAHs) | 0.1 mg/m³ | 0.2 mg/m³ | carcinogenic | ✓ Within Limit |
| Formaldehyde | 0.5 mg/m³ | 0.37 mg/m³ | carcinogenic | ⚠️ Exceeds Limit |
Ventilation Requirements
Air Changes Per Hour
12
Exhaust Velocity
0.5 m/s
Filtration Type
HEPA
Particulate Generation
Respirable Fraction
80%
Size Range
0.1 - 10 μm
Substrate Compatibility Warnings
- •Laser parameters must be optimized to prevent substrate damage
- •Avoid laser cleaning on surfaces containing chlorinated compounds (risk of phosgene gas)
- •Test on small area first to assess fume generation characteristics
Environmental Dust Layer surface magnification
Before Treatment
Surface shows contamination from environmental dust layer affecting material appearance and properties.
After Treatment
Post-cleaning reveals restored surface with environmental dust layer successfully removed through precise laser ablation.
Regulatory Standards & Compliance
OSHA 29 CFR 1926.95
Personal Protective Equipment
