Overview

Gravimetric sampling for inhalable and/or respirable dust fractions in workplaces where employees are exposed to airborne particulate. Applicable to mining, milling, woodworking, construction, manufacturing, and food processing environments.

Laboratory analysis required

Methodology

  • Personal gravimetric sampling using calibrated pumps with IOM samplers (inhalable) or cyclone samplers (respirable)
  • Pre- and post-weighed filter media submitted to accredited laboratory
  • Calculation of TWA exposure concentrations
  • Comparison against OELs for total inhalable dust (10 mg/m³) and respirable dust (3 mg/m³), or substance-specific limits

What You Receive

  • Dust exposure report with gravimetric results per worker/area
  • Compliance status against applicable OELs
  • Recommendations for dust suppression, extraction, and respiratory protection
Applicable Legislation:
Hazardous Chemical Substances Regulations, 1995; OHS Act 85 of 1993.

Frequently Asked Questions

What is the difference between inhalable and respirable dust?
Inhalable dust includes all particles that can enter the nose and mouth. Respirable dust is the finer fraction that penetrates deep into the lungs (alveoli). Respirable dust is generally more hazardous and has stricter exposure limits.