34mm Slotted Glass Fiber Filters for TE-298 Marple Personal Cascade Impactor SKU: TE-290-GF

The TE-290-GF 34mm slotted glass fiber filters serve as collection substrates for the built-in backup filter holder of the TE-298 Marple personal cascade impactor. Each filter features six precision-cut radial slots that accelerate sampled air through the impactor stages, enabling accurate particle size distribution measurements for personal exposure monitoring and industrial hygiene applications.

Technical Operation: These glass fiber substrates function as the final collection stage in the Marple cascade impactor system. After air passes through all impactor stages, remaining fine particles are collected on the built-in 34mm filter. The slotted design maintains proper airflow dynamics while providing a clean collection surface for gravimetric analysis. The TE-298 impactor operates at a flow rate of 2 LPM, making these filters suitable for extended sampling periods.

Key Specifications

• Diameter: 34mm
• Slot configuration: 6 precision-cut radial slots
• Package quantity: 100 filters per box
• Material: High-quality glass fiber
• Compatible flow rate: 2.0 LPM

Compatibility

These filters are specifically designed for the TE-298 Marple personal cascade impactor. The TE-298 features 8 impactor stages followed by a built-in filter holder that accommodates these 34mm substrates. The impactor is worn by personnel to provide complete and accurate aerodynamic particle size distributions with particle cut-points ranging from 21 to 0.5 microns.

For alternative collection media, consider TE-290-QZ quartz fiber filters for applications requiring high-temperature resistance or trace metal analysis.

Sampling Applications

These glass fiber collection substrates support personal exposure monitoring across industrial, occupational, and environmental applications. The Marple-NIOSH personal cascade impactor is designed to be worn by workers for particle size distribution measurements. Common applications include workplace aerosol assessment, dust exposure monitoring, and research into respirable particle fractions.

Preparation and Analysis: Prior to sampling, collection substrates and backup filters must be weighed and placed in the impactor. Post-sampling gravimetric analysis determines mass concentration by size fraction, providing critical data for exposure assessment and regulatory compliance.