Owner's manual

ManualsBrandsSKC ManualsEquipment225-370 Sioutas Cascade Impactor

Operating Instructions

863 Valley View Road, Eighty Four, PA 15330 USA

Tel: 724-941-9701 Fax: 724-941-1369 e-mail: skctech@skcinc.com

Sioutas Cascade Impactor

The patented

†

personal Sioutas Cascade Impactor consists of four impaction stages

and an a er-ﬁ lter that allows the separation and collection of airborne particles in

ﬁ ve size ranges. The Sioutas Cascade Impactor is used with the Leland Legacy

Sample Pump (SKC Cat. No. 100-3002) or any other pump capable of maintaining

a constant ﬂ ow rate of 9 L/min. Particles above each cut-point are collected on a

25-mm PTFE ﬁ lter in the appropriate stage. Particles below the 0.25 μm cut-point

of the last stage are collected on a 37-mm PTFE a er-ﬁ lter. The Sioutas Cascade

Impactor clips onto a worker’s collar in the breathing zone and the pump clips onto

the worker’s belt. For area sampling, the impactor can be a ached to a tripod or

clipped in an appropriate location. The Sioutas Impactor may be used for ambient

outdoor sampling with special provisions (see Sampling on page 7). Size-fractionated

samples can be analyzed gravimetrically, chemically, and microscopically.

† U.S. Patent No. 6,786,105

Summary of content (12 pages)

PAGE 1
Operating Instructions 863 Valley View Road, Eighty Four, PA 15330 USA Tel: 724-941-9701 Fax: 724-941-1369 e-mail: skctech@skcinc.com Sioutas Cascade Impactor The patented† personal Sioutas Cascade Impactor consists of four impaction stages and an after-filter that allows the separation and collection of airborne particles in five size ranges. The Sioutas Cascade Impactor is used with the Leland Legacy® Sample Pump (SKC Cat. No.
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Performance Profile Flow Rate: 9 L/min 50% Cut-point at 9 L/min: Stage A Stage B Stage C Stage D Recommended After-filter Type: Recommended Filter for Stages: 2.5 μm 1.0 μm 0.50 μm 0.25 μm 37-mm, 2.0-μm PTFE filter* with PMP support ring (SKC Cat. No. 225-1709) 25-mm, 0.5-μm PTFE filter with laminated PTFE support (SKC Cat. No. 225-2708) Certification: EPA-ETV has verified the Sioutas Impactor performance with the Leland Legacy sample pump. See www.epa.gov/nrmrl/std/etv/vt-ams.html#pcis for details.
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Disassembly The Sioutas Impactor will arrive already assembled with the exception of the filter retainers, which are included, but packaged separately. Disassemble it to clean (see Cleaning), to load with filters (see Assembly), or to remove filters after sampling. Figure 1.
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6 5 O pl utle at t e ng pr -ri O C om 7 rin es g sio Sp n ac er rin g Sc re en Remove O-ring from outlet plate (see Figure 2). Repeat Steps 3 and 4 for stages B-D. Figure 2. Outlet plate, exploded view Remove compression ring from outlet plate (see Figure 2). Note: Use forceps to carefully insert or remove impaction substrate, after-filter, and filter retainers. Media and Impactor Preparation Equilibrate and pre-weigh the filters in a clean environment according to appropriate procedures.
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Align marks Filter 3 Nest a collector plate in top of outlet plate. Align the marks. Use forceps to place a 25-mm filter in collector plate. Align “D” with mark Filter retainer Filter 4 5 6 Use forceps to place a filter retainer on top of the filter. Press down firmly until snug. Place accelerator plate D (O-ring side up) on top of collector plate. Align “D” with mark. Note: Tighten thumb nuts using an alternating pattern.
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Calibration Calibrate pump flow rate with the Sioutas Impactor and representative after-filter in place. It is not necessary to pre or postweigh representative media. You may also calibrate with representative filters in all the stages if desired, however, it is not necessary for proper calibration. 1. Using flexible tubing, connect the outlet of the Sioutas Impactor to the inlet of a Leland Legacy Sample Pump or other pump capable of maintaining a constant 9 L/min flow rate. 2.
PAGE 7
Sampling Notes: • As the particle load on the after-filter increases during sampling, the pressure drop will also increase. Therefore, use a compensating sample pump such as the Leland Legacy (SKC Cat. No. 100-3002). • Back pressure on PTFE filters can vary within the same lot. • The Sioutas Impactor may be used for ambient outdoor sampling with the following provisions: 1. Wind velocity is < 5 mph 2. The impactor plates are not overloaded. See NUATRC Report No. 2 at www.sph.uth.tmc.
PAGE 8
Cleaning Clean the Sioutas Impactor in between samples to remove residual particles. Disassemble all stages (see Disassembly) and O-rings. To remove O-rings, align the head of a small flat-head screwdriver with the notch in the inner wall of the plate. Gently lift the O-ring up and out. Wash parts in water with detergent or in isopropyl alcohol. Parts may also be cleaned in an ultrasonic bath. Rinse and dry all parts thoroughly with compressed air if available. Otherwise, air dry in a clean environment.
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Ordering Information Description Sioutas Personal Cascade Impactor Cat. No. 225-370 Pump for Sioutas Impactor Leland Legacy Sample Pump#, 5 to 15 L/min, with Li-Ion battery pack, CE marked Cat. No. Filters for Sioutas Impactor After-filter, 37 mm PTFE*‡ with PMP support ring, 2.0 μm, pk/50, optional Collection Substrate (filter for 4 stages), 25-mm PTFE (Zefluor™) with PTFE support, 0.5 μm, pk/100, required 100-3002 Cat. No.
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