Published: March 2026 | By Anitech Occupational Hygiene Team
Part of our Mask Fit Testing Australia: Complete Guide →
Most Australian employers know they need respirator fit testing. Far fewer can articulate which standard actually governs it—or what the 2023 update changed. That gap creates compliance risk. This guide cuts through the standards complexity and shows exactly what AS/NZS 1715:2009 and AS/NZS ISO 16975-3:2023 require, how they connect to WHS Regulations, and what the revised 2023 protocols mean for your respiratory protection program.
Two Standards, One Mission
Australia’s respirator fit testing regime rests on two complementary standards. Understanding their roles and their relationship is the foundation of compliant fit testing.
AS/NZS 1715:2009 — Selection, use and maintenance of respiratory protective equipment — is the core WHS standard. It sets out the entire framework: when you must establish a respiratory protection program (RPP), how to assess hazards, which respirator to select, and crucially, that every tight-fitting respirator must be fit tested. This standard is referenced in Safe Work Australia model WHS Regulations and is effectively the master standard.
AS/NZS ISO 16975-3:2023 — Respiratory protective devices — Selection, use and maintenance — Part 3: Fit testing procedures — is the operational detail. It defines the exact protocols: which fit test methods are acceptable (qualitative, quantitative), how to conduct test exercises, what minimum fit factors are required, and what fit test reports must contain. It replaced the previous fit testing procedures and was published in 2023 with tighter competency requirements for fit testers.
Think of it this way: AS/NZS 1715 says “you must fit test.” AS/NZS ISO 16975-3 says “this is exactly how to do it.”
What AS/NZS 1715:2009 Requires
The Respiratory Protection Program Framework
Clause 4 of AS/NZS 1715:2009 requires employers to establish a documented respiratory protection program (RPP) whenever respirators are used in the workplace. This is not optional. The RPP must address every stage of respirator management:
- Hazard assessment (Clause 5): Identify the airborne hazard (dust, fume, gas, biological), measure its concentration, and determine the protection factor required
- Respirator selection (Clause 6): Choose the right type and model based on the hazard, assigned protection factor (APF), and wearer suitability
- Fit testing (Clause 7): All users of tight-fitting negative-pressure respirators must be fit tested before first use and at least annually thereafter
- Training (Clause 8): Workers must be trained on the why, when, and how of respirator use
- Maintenance and inspection (Clause 9): Daily checks, cleaning, storage, and replacement of filters
- Record keeping (Clause 10): Document everything—hazard assessment, respirators selected, fit test results, training dates, maintenance logs
Fit Testing Obligation Under AS/NZS 1715
Clause 7 is unambiguous: “A tight-fitting negative-pressure respirator shall not be used by a wearer unless they have been fit tested with that specific model and size.” The standard then directs users to AS/NZS ISO 16975-3 for the procedures.
“Tight-fitting” means the facepiece seals against the face—half-face and full-face negative-pressure respirators, not hoods or helmets.
“That specific model and size” is critical: fit testing is respirator-specific. A worker fit-tested on a 3M 8320 P2 is not fit-tested for a Moldex 2200 or even a different size of the 8320. Each combination requires its own fit test.
The standard also requires fit testing to be repeated:
– Annually at minimum
– Immediately after significant facial changes (surgery, major dental work, weight loss >4 kg)
– Whenever a different model or size is issued
– Whenever the initial fit test is failed or borderline
Connecting to WHS Regulations
Safe Work Australia’s model WHS Regulation Clause 44 (or equivalent in each State: NSW 382, VIC 346, WA 83) places a general duty on employers to ensure that any personal protective equipment, including respirators, is properly fitted. AS/NZS 1715 and AS/NZS ISO 16975-3 are the approved standards by which this duty is measured. While the Regulations don’t mandate these standards word-for-word, WorkSafe inspectors treat compliance with them as the benchmark for “properly fitted.”
Failure to comply—for example, fit testing only once and never repeating, or failing to fit-test specific models—creates a prima facie (at-first-sight) breach of the duty to ensure proper fit.
AS/NZS ISO 16975-3:2023—The Fit Testing Protocols
What It Defines
AS/NZS ISO 16975-3:2023 is the operational manual for fit testing. It specifies:
Approved qualitative fit test (QLFT) methods:
– Saccharin solution (sweet taste detection)
– Sodium isoamyl acetate (banana-like smell)
– Bitrex (bitter taste—less common in Australia)
– Irritant smoke (stannic chloride—used only for fit-checking, not initial testing)
Approved quantitative fit test (QNFT) methods:
– Condensation nuclei counter (CNC)—the market standard, also known as the PortaCount method
– Optical particle counter (OPC)—less common
– Ambient aerosol QNFT (AANFT)—specialized, rarely used in Australia
Test exercises (8-part protocol):
1. Normal breathing (1 minute)
2. Deep breathing (1 minute)
3. Turning head side to side (1 minute)
4. Nodding head up and down (1 minute)
5. Talking (1 minute—subjects must count from 1 to 30 or recite a standardized passage)
6. Bending forward and touching toes (1 minute)
7. Running in place or stepping up and down (1–1.5 minutes)
8. Normal breathing again (1 minute)
Each exercise is designed to challenge the seal under different facial movements and breathing rates.
Minimum acceptable fit factors:
– Half-face respirator (half-mask P2, N95, etc.): ≥100
– Full-face respirator: ≥500
These fit factors represent the ratio of challenge agent concentration outside the mask to inside. A fit factor of 100 means the mask reduced the outside concentration by a factor of 100. A fit factor of 500 means by a factor of 500. These minimums are non-negotiable.
Key Procedural Requirements
Initial fit test: Must be QNFT (quantitative, using CNC or OPC). Qualitative methods are no longer permitted as a first-fit test in the 2023 standard, except in specific circumstances where QNFT is impractical. This is a significant change from earlier practice.
Repeat fit testing: Can be qualitative or quantitative. Many employers use qualitative (saccharin, isoamyl acetate) for annual re-testing to reduce costs, provided the worker passes QNFT on initial and selected re-test dates.
Full-face respirators: Cannot be fit-tested using qualitative methods. QNFT only.
Fit test records: Must include worker name, respirator model and size, fit test date, method, fit factors (if QNFT), result (pass/fail), name and credentials of tester, and date of next fit test due.
What Changed from 2012 to 2023
The 2023 revision tightened several requirements:
-
Fit tester competency: The 2023 version explicitly requires fit testers to have formal training and experience. It specifies that testers must understand the principles of fit testing, how to operate the equipment (particularly CNC devices), and how to recognize and respond to invalid results. In Australia, this has driven uptake of the RESP-FIT accreditation course—the only nationally recognized formal qualification for respirator fit testers.
-
Documentation rigor: The 2023 standard requires more detailed record-keeping, particularly for QNFT results. Testers must record fit factors for each exercise separately and demonstrate that the minimum fit factor was achieved on at least two consecutive exercises.
-
Test conditions: The 2023 standard specifies environmental conditions more precisely (temperature, humidity ranges within which fit testing is valid) and requires fit testers to verify these conditions before testing.
-
Alignment with ISO: The 2023 revision replaced a previous Australian-only standard with an internationally-harmonized ISO standard, improving consistency with international best practice and making it easier for multinational employers to run consistent programs.
What “Reasonably Practicable” Means for Fit Testing
WHS Regulations use the term “reasonably practicable”—employers must do what is “reasonably practicable” to protect workers’ health and safety. For fit testing, this means:
- If a hazard assessment identifies the need for a tight-fitting respirator, fit testing is mandatory, not optional. It is reasonably practicable for any employer to contract a fit testing service.
- Annual re-testing is a baseline expectation. Employers cannot skip years due to cost or convenience.
- Fit testing specific models and sizes is mandatory. An employer cannot issue an untested new model and hope the previous year’s fit test still applies.
- If a worker fails fit testing with all available models of a specific respirator class, providing a loose-fitting alternative (e.g., PAPR) is reasonably practicable and required.
The converse is also important: employers are not required to achieve fit testing on a specific brand or model if a worker is unable to achieve a satisfactory fit. Alternative respiratory protection (PAPR, supplied-air) can be reasonably practicable.
Common Compliance Failures
WorkSafe audits and Anitech’s site visits reveal recurring non-compliance patterns:
Failure 1: Testing wrong respirator model
– Example: Worker is issued 3M 8320 P2, but fit testing records show 3M 8210 P2 (same brand, different model). These are not equivalent. The worker is technically not fit-tested for their actual respirator.
– Fix: Fit test must match the exact model and size in use.
Failure 2: One-off fit testing, no repeats
– Example: Worker fit-tested in 2023, now 2026, no re-test on file. Standard requires annual minimum.
– Fix: Implement an annual re-testing schedule. Many employers use a calendar spreadsheet (simple but error-prone) or connect with their fit testing provider for automatic reminders.
Failure 3: No record of fit test
– Example: “The tester told me I passed” but no written report. This creates a compliance gap: if a WorkSafe inspector asks for fit test records, absence of documents is treated as no fit test.
– Fix: Always obtain a written fit test report, signed and dated by the tester, with the worker’s details, respirator model, fit factor, and date of next re-test.
Failure 4: Fit testing expired respirators
– Example: Employer procures P2 masks with a 5-year shelf life, conducts fit testing in Year 1, masks expire in Year 5. Worker is fit-tested but the mask they’re carrying is past expiration.
– Fix: Coordinate mask procurement with fit testing dates. Replace expired masks promptly and re-test if a new model is introduced.
Failure 5: Not repeating after facial changes
– Example: Worker has dental implants or minor surgery, continues to wear same respirator, no re-test. The fit may have changed.
– Fix: Include in RPP documentation that workers must notify their manager of significant facial changes, triggers re-testing.
Frequently Asked Questions
Q1: Do I need to fit-test loose-fitting respirators (PAPRs, hoods)?
No. AS/NZS ISO 16975-3 defines fit testing protocols only for tight-fitting negative-pressure respirators. Loose-fitting respirators (PAPRs with hoods or helmets, supplied-air hoods) are not fit-tested. They are assigned a higher assigned protection factor (APF) because they are designed to accommodate a wider range of face shapes and facial hair. If you switch from a tight-fitting P2 to a loose-fitting PAPR, the new PAPR does not need fit testing, though the worker should receive training on its use.
Q2: Can a fit tester from overseas (e.g., a multinational company’s fit tester trained in the US) conduct fit testing in Australia?
Technically, AS/NZS ISO 16975-3 does not restrict who can conduct fit testing—it specifies competency requirements (knowledge of fit testing principles, equipment operation, interpretation of results) but does not mandate a specific qualification. However, in practice, Australian WorkSafe and industry practice expect compliance with Australian standards and best practice. Anitech and the Australian occupational hygiene sector recommend that fit testers hold RESP-FIT accreditation or equivalent formal training recognized in Australia. A US-trained tester may satisfy competency requirements but should be formally inducted into Australian standards and local regulatory expectations.
Q3: Is qualitative fit testing (saccharin, isoamyl acetate) acceptable for initial fit testing under the 2023 standard?
No. AS/NZS ISO 16975-3:2023 requires initial fit testing to be quantitative (QNFT, using CNC or OPC). Qualitative methods are only acceptable for repeat fit testing (annual re-tests) once a worker has passed an initial QNFT with that model and size. This is a significant change from some earlier practices and reflects the higher precision of quantitative methods. Qualitative testing cannot be used for full-face respirators at any stage.
Q4: If a worker is fit-tested in January and then moves to a new role in June requiring a different hazard and different respirator model, do they need a new fit test?
Yes. The previous fit test covered only the specific model tested. A new model requires a new fit test, regardless of how recent the previous test is. In this case, fit testing should occur before the worker begins the new role.
Q5: What is the relationship between AS/NZS 1715 and AS/NZS ISO 16975-3? Is one superseding the other?
No, they are complementary. AS/NZS 1715:2009 remains the primary RPP standard and still governs overall respiratory protection program structure. AS/NZS ISO 16975-3:2023 is the current procedure for fit testing and replaces previous fit testing procedures that were formerly within AS/NZS 1715. Employers must comply with AS/NZS 1715 overall program requirements and use AS/NZS ISO 16975-3 for fit testing procedures. Both are current and both apply.
Q6: Can I use a handheld CNC (PortaCount) device without formal training?
No. The 2023 standard requires fit testers to be formally trained on equipment operation. CNC devices, while relatively straightforward to use, require understanding of valid testing conditions, recognition of equipment errors or false results, and proper calibration checks. Using CNC equipment without training creates risk of invalid results (worker passes but actually doesn’t fit, or fails despite adequate fit). Anitech and our RESP-FIT accredited testers ensure all equipment users have completed recognized training.
Q7: Are the fit factors from 2023 different from previous standards?
No. The minimum fit factors (≥100 for half-face, ≥500 for full-face) have been consistent since the introduction of quantitative fit testing. However, the 2023 standard is more explicit about how fit factors must be demonstrated and documented—for example, requiring that the fit factor is sustained across multiple test exercises, not just achieved on one occasion.
Related Resources
- Australian Standard AS/NZS 1715:2009 — Available from Standards Australia (standardsaustralia.com.au)
- Australian Standard AS/NZS ISO 16975-3:2023 — Available from Standards Australia
- RESP-FIT Accreditation — Anitech’s nationally-recognized fit tester qualification; see Anitech RESP-FIT Accreditation for course details and enrolment
- Safe Work Australia Guidance on Respirators — safeworkaustralia.gov.au
- Anitech Respirator Selection Tool — Determine appropriate respirator class for your hazard
Ready to Ensure Compliant Fit Testing?
Anitech’s RESP-FIT accredited fit testers and RPP consultants help Australian employers build and run fit testing programs that meet AS/NZS 1715 and AS/NZS ISO 16975-3 standards. Contact us today for a hazard assessment, fit testing service, or RPP audit. Get in touch →
