Diesel Particulate Matter (DPM) Cassette

• Collect submicron particles
• Integral precision-jeweled impactor screens out particles > 1.0 µm such as coal dust
• Heat-treated quartz filter collects submicron particles.
  
  
• Meets NIOSH Method 5040 specifications
  
  
• Provides optimum DPM collection efficiency
• Evaluated at 1.7 L/min in metal/non-metal mines and 2.0 L/min in coal mines; flow rates are used by MSHA
  
  
• Sample integrity assured
• Heat-treated quartz filters assure low carbon background
• Designed for single use
• Tamper-evident sealed
• Streamlined cassette design

 

SKC DPM Cassette Product Data Bulletin (PDF)

SKC DPM Cassette Operating Instructions (PDF)

Modification and Validation of Diesel Particulate Matter Cassette for PM1.0 Sampling at Different Flow Rates (PowerPoint)

DPM Analytical Laboratories Reference List

Collection of submicron diesel particles without interference of coal-source elemental carbon. Precision-jeweled impactor screens out interfering coal dust.

Low carbon background filters assure accurate results.

Single-use cassettes are tamper-evident sealed to ensure sample integrity.

Uses a standard personal constant flow pump. Flow rates of 1.7 L/min and 2.0 L/min provide optimum collection. Use a standard constant flow sample pump such as the SKC AirChek® 2000 or Universal PCXR.

Meets specifications of NIOSH Method 5040 for the analysis of elemental carbon (EC) to determine total carbon (organic and elemental) in a sample. Total carbon represents more than 80% of diesel particulate emissions. Compared to gravimetric methods, NIOSH 5040 is more sensitive and specific for EC.

The GS-1 Single-inlet Cyclone The GS-1 Cyclone is a single-inlet cyclone that provides performance equivalent to the Dorr-Oliver Cyclone. The GS-1 Cyclone has the added advantage of conductive plastic construction. This material eliminates the electrostatic effects experienced when using the non-conductive nylon Dorr-Oliver cyclone and is safe for use in underground mines. The GS-1 Cyclone is designed for use with the SKC DPM Cassette and for respirable dust sampling. A cyclone should be used in settings where carbonate particles or larger particulate that can clog the impactor are likely to be sampled.

Cassette Without Impactor for NIOSH 5040 SKC Also offers preloaded cassettes without impactors (Cat. No. 225-401) that meet NIOSH 5040 specifications for sampling DPM. When it is not necessary to separate DPM from other respirable particles, such as coal dust, perform more economical sampling by using the 225-401 preloaded cassettes. Each cassette contains a NIOSH-specified heat-treated quartz filter and cellulose support pad.

Filter Cassette/Cyclone Holder Accessory This lightweight holder accommodates either a DPM Cassette or other filter cassettes with or without a cyclone. The holder conveniently clips to a worker's collar. It is required when using the DPM Cassette with the GS-1 Cyclone.

SKC Diesel Particulate Matter (DPM) Cassette		Qty.	Cat. No.
With precision-jeweled impactor, contains two 37-mm heat-treated quartz filters (limited shelf life), tamper-evident sealed, meets NIOSH 5040 specifications		10	225-317
Organic Carbon and Elemental Carbon Filter Cassette		Qty.	Cat. No.
Without impactor, standard 3-piece clear styrene cassette loaded with 37-mm heat-treated quartz filter, support pad, banded, meets NIOSH 5040 specifications		50	225-401
Accessories
GS-1 Cyclone, single-inlet, 10 mm, conductive plastic, includes bowl adapter, 37-mm cassette adapter, and grit pot, for use with DPM cassette to avoid filter overload by large particles			225-105
Filter Cassette/Cyclone Holder includes 3 feet of 1/4-inch ID Tygon tubing and a 25-mm adapter ring, for attaching a DPM or standard filter cassette to worker's clothing in the breathing zone. May be used with or without a cyclone, required when using DPM Cassette with GS-1 Cyclone			225-1
Multi-purpose Calibration Jar, provides convenient calibration. The rugged 32-ounce polypropylene jar contains a quick screw cap and barbed fitting for easy use.			225-111

Custom Cassettes with Integral Impactors ONLY from SKC! SKC will manufacture custom-designed sampling cassettes in the DPM cassette housing using filter media and impactors with your specified cut-points and flow rates. Contact SKC to discuss your unique sampling requirements.

SKC DPM Cassette Operating Instructions (PDF)

Modification and Validation of Diesel Particulate Matter Cassette for PM1.0 Sampling at Different Flow Rates (PowerPoint)

DPM Analytical Laboratories Reference List