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Marple Series 290 Personal Cascade Impactor

Product SKU: NS-29

Quick Overview

Personal Cascade Impactor

Product Name SKU Price Qty
Marple Personal Cascade Impactor; includes Inlet Cowl, Eight Impactor Stages (21.3, 14.8, 9.8, 6.0, 3.5, 1.55, 0.93 and 0.52 Micron Cut-Points), Built-In Back-Up Filter Holder, Screwdriver Tool, and Personal Mounting Bracket NS-298-4
$2,340.00
Marple Personal Cascade Impactor; same as NS-298 but has Six Impactor Stages (9.8, 6.0, 3.5, 1.55, 0.93 and 0.52 Micron Cut-Points) NS-296-5
$1,855.00
Marple Personal Cascade Impactor; same as NS-298 but has Four Impactor Stages (21.3, 14.8, 9.8 and 3.5 Micron Cut-Points) NS-294-6
$1,385.00
Marple Personal Cascade Impactor; same as NS-298 but has Two Impactor Stages (9.8 and 3.5 Micron Cut-Points) NS-292-7
$880.00

Availability: In stock

Details

Overview

OPERATION
Sampled air enters the inlet cowl and accelerates through six radial slots in the first impactor stage. The cowl eliminates ashes and debris from the sampler. Particles larger than the cut-point of the first stage impact on the pre-cut collection substrate. The air flows through the narrower slots in the second impactor stage and smaller particles impact on the second collection substrate. This process continues to the final filter. The width of the radial slots is constant for each stage but smaller for each succeeding stage. The jet velocity is higher for each succeeding stage, and smaller particles eventually acquire sufficient momentum to impact on the collection substrates. After the last impactor stage, remaining fine particles are collected on the built-in 34mm filter. 

PROCEDURE
Prior to sampling, collection substrates and the back-up filter are weighed and placed in the impactor. A commercial-type personal air sampler pump with a flow range from 0.5 to 5 liters will accommodate the New Star Marple Personal Cascade Impactors. The typical flow rate is set at 2 lpm (liters per minute). The impactors personal mounting bracket is attached to the lapel or pocket. 

After sampling, the substrates and filters are weighed. Weight increase on each substrate is the mass of the particles for that impactor stage. The total weight of particles on all stages and final filter is added and the percent particle mass in each size range is calculated. Respirable particle mass fraction is determined from the particle size distribution. 

APPLICATIONS

  • Wood dust
  • Coal dust
  • Silica dust
  • Respirable dust sampling
  • Inhalation toxicology
  • Indoor air pollution
  • Aerosol research

 

Features

A multi-jet, multi-stage personal cascade impactor

 

Specifications: 

Flow Rate 2 liters per minute (lpm) nominal; 1-5 lpm flow range (1-3 lpm recommended)
Construction Precision-Machined aluminum
Collection Substrates 34 mm diameter, Mylar, stainless steel, glass fiber, and other filter media
Back-Up Filter 34 mm diameter; PVC filter media, 5 micron pore size and glass fiber
Outlet Fitting 1/8"

Additional Information

Technical Specifications

Specifications 

Flow Rate 2 liters per minute (lpm) nominal; 1-5 lpm flow range (1-3 lpm recommended)
Construction Precision-Machined aluminum
Collection Substrates 34 mm diameter, Mylar, stainless steel, glass fiber, and other filter media
Back-Up Filter 34 mm diameter; PVC filter media, 5 micron pore size and glass fiber
Outlet Fitting 1/8"