PM2.5 & PM10 Monitoring for Offices

Why PM2.5 and PM10 Matter

PM2.5 particles are small enough to penetrate deep into the lungs and enter the bloodstream. PM10 particles affect the upper respiratory tract. In office environments, elevated particulate levels cause respiratory irritation, exacerbate asthma, and contribute to sick building syndrome symptoms.

• PM2.5 — particles under 2.5 µm, linked to cardiovascular and respiratory disease
• PM10 — particles under 10 µm, cause irritation and respiratory symptoms
• WHO guideline for PM2.5: 15 µg/m³ annual mean, 45 µg/m³ 24-hour
• WELL v2 threshold: 15 µg/m³ for PM2.5, 50 µg/m³ for PM10
• HSE EH40 workplace exposure limits for inhalable and respirable dust

Monitoring Methods

We deploy optical particle counters for real-time continuous monitoring and gravimetric samplers where regulatory compliance or laboratory analysis is required. Monitoring duration ranges from spot checks to multi-week deployments depending on the investigation objective.

• Real-time optical particle counters (continuous PM2.5/PM10)
• Gravimetric sampling for laboratory analysis
• Personal exposure monitoring for occupational compliance
• Source apportionment through multi-location monitoring
• Trend analysis over days, weeks, or seasonal cycles

Common Office Sources

Particulate matter in offices typically originates from external air ingress (traffic, construction), HVAC filtration failure, printer and copier emissions, building fabric deterioration, and cleaning activities. Our monitoring identifies the dominant source for targeted remediation.