Aluminium Respirable Dust Cyclone
A lightweight sampler that is used with a filter loaded into a three-piece filter cassette, giving sharp size selection between respirable fractions at 4 or 5 µm.
Respirable
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The Aluminium Cyclone is small and lightweight, and eliminates adverse electrostatic effects, allowing the cyclone to sample particles more efficiently. It is used by inserting it into the middle ring of an open-face three-piece cassette loaded with an appropriate filter, which collects the respirable particles but larger particles fall into the grit pot to be discarded. Available in 25 mm and 37 mm versions the Aluminium Cyclone provides sharp size selection for the respirable fraction. It is specified in the NIOSH Method 7500 for silica and NIOSH 0600 for respirable particulates. It has a 50% cut-point of 4 µm at 2.5 L/min and 3.5 µm at 2.8 L/min.
| Flow Rate | 2.5 L/min |
| 50% Cut-point | 4 µm at 2.5L/min 3.5 µm at 2.8 L/min |
| Material | Aluminium |
| Sample media | 25 or 37 mm filters in 3-piece cassettes |
| Tubing | 1/4inch (6.25 mm) ID |
| Dimensions | 6.6 x 3.8 cm |
Aluminium Cyclones
| Description | Pack Size | Part Number |
|---|---|---|
| 25 mm Respirable Dust Aluminium Cyclone, with grit pot. | Each | 225-01-01 |
| 37 mm Respirable Dust Aluminium Cyclone, with grit pot. | Each | 225-01-02 |
Accessories
| Description | Pack Size | Part Number | |
|---|---|---|---|
| Filter Transport Cassette, 25 mm, conductive plastic | 10 | 225-67-10 | ![]() |
| Three-piece Filter Cassette Blanks, 25 mm | 50 | 225-3-25LF | ![]() |
| Three-piece Filter Cassette Blanks, 37 mm | 10 | 225-3LF | ![]() |
| Filter Cassette/Cyclone Holder includes: 0.9 m (3 ft) of 1/4 inch ID Tygon tubing and a 25 mm adaptor ring, for attaching a DPM or standard filter cassette to a worker’s clothing in the breathing zone. May be used with or without a cyclone | Each | 225-1 | ![]() |
| Standard-size Multi-purpose Calibration Chamber | Each | 225-111 | ![]() |
| Calibration Adaptor, for 25 mm and 37 mm cyclones. Allows 1/4 inch ID Tygon tubing to be attached to the cyclone for simple calibration | Each | 225-01-03 | ![]() |
| Replacement Grit Pot for Aluminium Cyclones | 25 | P225013 | ![]() |
| Replacement O-Ring for 37 mm Aluminium Cyclone, 225-01-02 | 5 | P22501 | ![]() |
| Replacement O-Ring for 25 mm Aluminium Cyclone, 225-01-01 | 5 | P3226 | ![]() |






