Calibrated test equipment
Reliable, traceable leakage measurement
Aerosol mixing chamber
Evenly disperses the aerosol before it enters the equipment for accurate detection of leakage around the housing.
Traceable result
Certificate and test label
One service. Three critical equipment groups.
H-Class vacuums
Complete installed HEPA integrity testing for asbestos, silica and hazardous dust vacuum equipment.
Negative pressure units
Integrity testing across the HEPA filter, seals and housing to confirm the assembled unit is controlling hazardous particles.
Air scrubbers & HEPA housings
Testing for portable filtration equipment and HEPA housings used in remediation, construction and controlled environments.
Workshop testing and fleet support.
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Auburn testing workshop
Set up for H-Class vacuums, NPUs and HEPA filtration equipment.
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Fleet and on-site testing
Practical scheduling for multiple units and larger equipment.
WHAT YOU RECEIVE
More than a sticker on the machine.
A useful test should give your team evidence, not uncertainty.
Hazardous-dust equipment specialists
Testing is carried out by a team that sells, services and works with NPUs, H-Class vacuums and HEPA filtration systems every day.
| Test scope | Included as standard |
|---|---|
| Pre-test condition and identification check | ✓ |
| Controlled PAO aerosol challenge | ✓ |
| Upstream and downstream photometer readings | ✓ |
| Filter face, seal and housing leakage scan | ✓ |
| Clear pass/fail certificate and dated label | ✓ |
| Practical guidance when a unit does not pass | ✓ |
COMMON QUESTIONS
What your site team needs to know.
Still unsure whether your equipment is due? Send us the make, model and last test date and we'll point you in the right direction.
What is DOP or PAO testing? +
It is an integrity test for HEPA filtration systems. A controlled aerosol is introduced upstream and a photometer measures any penetration downstream while the filter face, seals and housing are scanned. PAO is now commonly used as the aerosol, while the service is still widely called a DOP test.
Do you test only the HEPA filter? +
No. A loose filter can pass while the assembled machine still leaks around a seal, frame or housing. We test the filtration system as an assembled unit so the result reflects how the equipment actually performs.
How often should equipment be tested? +
H-Class vacuums are typically tested at least annually. Negative pressure units used for asbestos work are commonly tested every six months and after HEPA replacement or work that could affect filter integrity. Always follow the manufacturer’s instructions and any project, client or regulatory requirements that apply to your equipment.
What happens if my equipment fails? +
We identify the likely leakage point and explain the next practical step. Depending on the fault, that may be reseating or replacing a filter, repairing a seal or servicing the housing before retesting.
Can you test equipment on site? +
Workshop testing is available at DeconSafe in Auburn, NSW. On-site testing can be arranged for larger equipment, fixed systems or multiple-unit fleets. Send us the location and quantity for availability and pricing.
From booking to test certificate.
Book your equipment
Tell us the equipment type, quantity and when you need it back.
Bring it in safely
Bring sealed equipment to our workshop using the recommended transport method.
Decontaminate and refilter
We inspect and decontaminate the equipment before testing.
Move to the testing room
Equipment enters our dedicated DOP/PAO testing room.
Receive proof
Receive your certificate and dated test label.