TE-230-GF Glass Fiber Slotted Collection Substrates for Cascade Impactors SKU: TE-230-GF

TE-230-GF Glass Fiber Slotted Collection Substrates for Cascade Impactors

The TE-230-GF glass fiber slotted collection substrates are precision-cut filter media designed specifically for use with Type A glass fiber filter media is the most commonly used material for collection substrates in Tisch Environmental's Series 230 High Volume Cascade Impactors. The substrates are thin flat sheets with 10 perforated slots exposing the slots in each stage, engineered to collect size-fractionated particulate matter during ambient air monitoring operations.

Particles passing through the slotted jets in the impactor stages impact on the collection substrates and are thereby deposited or collected. The collection substrates also act as the vacuum seal between impactor stages. Deposition of the particles into the glass fiber lattice improves particle retention and reduces possible re-entrainment, making these substrates highly effective for accurate particulate collection and analysis.

Compatibility and Applications

These glass fiber substrates are designed for use in all Tisch Environmental TE-230 series cascade impactors, including models TE-231, TE-233, TE-234, TE-235, and TE-236. The slotted impactor design separates particulates from larger than 7.2µm to less than .49µm while operating at a flow rate of 40cfm. The collection substrates for all stages are identical, simplifying inventory management and installation procedures.

• Compatible with all TE-230 series cascade impactors
• Suitable for particle size fractionation from 7.2µm down to 0.49µm
• Operates at standard high volume flow rates of 40 SCFM
• Each substrate features 10 precision-cut slots aligned with impactor jets

Installation and Handling Guidelines

It is recommended to lightly tap each glass fiber collection paper before inserting it into the Impactor to shake off any excess fibers. The collection substrate is centered over the slots, rough side up. Excessive tightening may cause fractionation of glass fiber collection paper, which then can adhere to the Impactor plates, so hand-tighten assembly nuts only lightly during installation.

Collection substrates provide a most convenient method for particle collection in contrast to using the heavy impactor stages themselves as the collection substrates and greatly reduces the cost of back-to-back tests by eliminating the need to purchase extra sets of impactor stages. The collection substrates also permit easy storage and subsequent chemical analysis of collected particulate samples.

Quality and Performance

Figure 3 gives the experimental collection efficiency curves for each Impactor stage for Type A glass fiber collection paper, demonstrating the proven performance of this substrate material in cascade impactor applications. These substrates enable precise particle size distribution measurements essential for ambient air quality monitoring, occupational health assessments, and EPA compliance testing.

Each box contains 100 pre-cut slotted substrates, providing sufficient media for extended monitoring campaigns or multiple sampling locations. The consistent quality and dimensional precision ensure reliable performance across all cascade impactor stages.