BGI SCC0.695 Personal Sampling Cyclone (DPM)

The SCC0.695 is a specialized sharp-cut cyclone engineered specifically for the collection of sub-micrometer aerosols, including Diesel Particulate Matter (DPM). Designed with a shrouded inlet to minimize wind bias, this stainless steel cyclone separates fine particles from larger interferents, providing a distinct PM0.8 cut-point at a flow rate of 2.21 LPM. It is the definitive tool for industrial hygienists monitoring exposure to combustion byproducts in mines, tunnels, and vehicle depots.

Key Benefits

• Targeted DPM Separation: Achieves a sharp aerodynamic cut-point of 0.8 µm, effectively isolating diesel soot from larger mineral dusts that confound gravimetric analysis.

• Conductive Stainless Steel Construction: Eliminates electrostatic effects that often bias sampling of fine combustion particles, ensuring 100% sample recovery.

• Aerodynamic Shrouded Inlet: Reduces velocity sensitivity and orientation bias, maintaining collection efficiency even in turbulent ventilation environments.

• Universal Compatibility: Fits standard 37mm filter cassettes and integrates seamlessly with common personal sampling pumps.

Technical Overview

The SCC0.695 utilizes a precise internal geometry to generate a vortex that separates particles based on aerodynamic diameter. At 2.21 LPM, particles larger than 0.8 µm impact the cyclone walls and fall into the grit pot, while the sub-micron fraction (DPM) passes through to the filter. This precise fractionation is critical for accurate elemental carbon (EC) and organic carbon (OC) analysis (NIOSH 5040 method) in mixed-dust environments.

Typical Use Cases

• Underground Mining: Differentiating diesel exhaust exposure from coal or silica dust.

• Tunnel Construction: Monitoring air quality for workers operating heavy machinery in confined spaces.

• Bus Terminals & Logistics: Assessing DPM levels in high-traffic loading bays.

• Combustion Research: Personal exposure studies related to ultrafine particles (UFP).

Why Choose This Cyclone?

Standard respirable cyclones cannot distinguish between hazardous diesel soot and common road dust. The SCC0.695 solves this by physically removing the larger fraction before the filter, providing a "clean" sample for DPM analysis. Its robust stainless steel body ensures durability in the harshest industrial conditions, making it a reliable investment for long-term compliance monitoring.