Parallel Particle Impactor, Thoracic, Aluminum

Overview

Parallel Particle Impactor (PPI), aluminum, four-stage, for respirable sampling at 8 L/min. The PPI provides the closest match to the entire ACGIH/CEN/ISO respirable or thoracic curves compared to any other sampler available. Requires substrates, filters, and supports, which are purchased separately.

For more information on the Parallel Particle Impactor, contact your local Air-Met office.

Features

Collection efficiency precisely matches ISO/CEN 7708:1995 size-selection criteria
- Respirable PPI Samplers meet specifications in the 2013 OSHA NPRM for silica

Economical and reusable – use with any suitable 37-mm filter

Load with disposable pre-oiled impaction substrates
- Reduce particle bounce and buildup effects

Only 3.3 ounces (93.6 grams) – ideal for both personal and area sampling

Selection of flow rates available to meet specific applications
- 8 L/min respirable PPI: Enhances sensitivity (for short-term and/or low concentration sampling) using high flow pumps; ideal for proposed lower OSHA PEL for silica
- 4 L/min respirable PPI: Enhances sensitivity and can be used with personal pumps
- 2 L/min respirable PPI: Standard TWA sampling
- 2 L/min thoracic PPI: Metalworking fluids (NIOSH Method 5524) and thoracic TLV-TWA compounds such as sulfuric acid and cotton dust

Patented disposable PPIs are available pre-assembled with:
- Filter and pre-oiled substrates for chemical analysis
- Pre-oiled substrates only – add your own weighed filter for gravimetric analysis

Reusable aluminum PPIs are available

Performance published in Journal of Physics and submitted to OSHA docket on silica

Specifications

Sampling Rate	2 L/min respirable or thoracic, 4 L/min respirable, or 8 L/min respirable
Sample Pump	Universal XR or AirChek for 2 L/min and 4 L/min, Leland Legacy for 8 L/min
Sample Time	Dependent on method used
Sample Media	37-mm, 5.0-µm PVC filter or 37-mm, 2.0-µm PTFE filter (NIOSH 5524) or 37-mm, 0.8-µm MCE filter

	Use cellulose pad or stainless steel screen for support.
	Back pressure on PTFE filters can vary within the same lot.
Tubing	1/4-inch ID
Impaction Substrate	Four 3/8-in diameter pre-oiled porous plastic discs
Analysis	Gravimetric or chemical
Body Material	Conductive aluminum
Dimensions	Height: (clip to exhaust): 4.25 in (10.8 cm)
	Diameter: 1.8 in (4.6 cm)
	Depth: 1.2 in (3.0 cm)
Weight	3.3 oz (93.6 gm)