GK2.05 (KTL): High-Flow PM2.5 Personal Sampler

The GK2.05 (KTL) is a benchmark personal cyclone designed specifically to measure PM2.5 (Fine Particulate Matter) at a flow rate of 4 LPM. By operating at a higher flow rate than standard cyclones, it collects more mass on the filter in less time, significantly improving the Limit of Detection (LOD) for gravimetric analysis and chemical speciation in clean or semi-clean environments.

Key Benefits

• High Sensitivity Sampling: The 4 LPM flow rate provides nearly double the sample volume of standard 2 LPM devices, crucial for measuring low-level PM2.5 concentrations accurately.

• EPA & ASTM Standards: Designed to meet the PM2.5 separation curves defined in US EPA and ASTM standards for environmental monitoring.

• Shrouded Option (GK2.05SH): Available with a specialized inlet shroud to prevent sampling bias caused by high wind speeds or rapid body movement.

• Lightweight Durability: Constructed from precision aluminum to minimize weight on the worker's lapel.

Technical Overview

The GK2.05 utilizes the Kenny-Tumbelo-Liden (KTL) geometry. It offers a sharp $D_{50}$ cut-point of 2.5 µm at 4 LPM. This precise size selection is critical for correlating personal exposure data with EPA ambient air quality standards (NAAQS). The optional "SH" model adjusts the flow slightly (3.5 LPM) to account for the shroud's aerodynamic effects, ensuring consistent performance in high-velocity air streams.

Typical Use Cases

• Environmental Epidemiology: Linking personal PM2.5 exposure to cardiovascular or respiratory health issues.

• Wildfire Smoke Monitoring: Protecting firefighters and outdoor workers from fine ash and soot.

• Green Building Certification: Verifying indoor air quality (IAQ) levels for LEED/WELL compliance.

• Occupational Health: Monitoring welding fumes and other fine thermally-generated particulates.

Why Choose This Cyclone?

When "Low Detection Limit" is the priority, the GK2.05 is the solution. Standard low-flow cyclones often fail to collect enough mass for valid analysis during short shifts or in cleaner areas. The GK2.05 delivers the necessary sample volume without compromising the sharpness of the PM2.5 cut.