New Zealand · Occupational Hygiene · MAIOH

Defensible exposure data for every New Zealand workplace.

Occupational hygiene assessment delivered by MAIOH-qualified hygienists — noise, dust, lead, welding fume and indoor air quality measured to AS/NZS standards and reported against Workplace Exposure Standards.

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  • MAIOHqualified hygienists
  • AS/NZSaligned methods
  • HSWA 2015compliance framing

Three exposure domains · one hygiene team

What we measure.

Air

What's in the breathing zone. Personal sampling, area sampling, and lab analysis for the contaminants that drive workplace exposure.

  • Indoor air quality (VOCs, CO2, humidity)
  • Inhalable & respirable dust, RCS
  • Welding fume & metal particulates
See all assessments

Sound

What workers hear over a shift. Personal noise dosimetry and area noise mapping to inform PPE selection and engineering controls.

  • Personal noise dosimetry (LAeq,8h)
  • Area noise mapping
  • Control validation & re-test
See noise assessments

Substances

Hazardous materials on surfaces and in dust. Lead surveys, sampling and dust monitoring aligned to AS/NZS 4361 and WorkSafe NZ guidance.

  • Lead paint surveys (XRF / sampling)
  • Lead dust monitoring
  • AS/NZS 4361:2017 alignment
See lead assessments

Service detail

Pick the assessment that fits.

Each one is run by a MAIOH-qualified hygienist, sampled to method, and reported against the relevant exposure standard.

Indoor air quality assessment in a New Zealand workplace

Indoor Air Quality

VOCs, dust, CO2, humidity and biological contaminants. Reported against ASHRAE guideline values.

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Workplace dust exposure monitoring with personal sampling pump

Inhalable & Respirable Dust

Dust monitoring to AS/NZS 3640-2009, including respirable crystalline silica (RCS).

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Welding fume exposure monitoring on a metal fabrication site

Welding Fume

Welding fume and metal particulate monitoring against Workplace Exposure Standards.

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Workplace noise dosimetry assessment in progress

Noise Exposure

Personal dosimetry and area mapping. Worker exposure evaluated and controls recommended.

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Lead dust and paint exposure assessment on a renovation site

Lead Dust & Paint

Occupational lead exposure monitoring and site investigations to AS/NZS 4361:2017.

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  • MAIOH-qualified hygienists
  • AS/NZS-aligned methods
  • HSWA 2015 compliance framing
  • IANZ-accredited partner laboratories
  • Nationwide assessor network

The assessment journey

From scoping to sign-off.

A defensible result starts with a defensible method. Here's how an occupational hygiene job runs through our team.

Hygiene path

Five steps from enquiry to recommendation

  1. 1

    Scoping call

    Define the hazards, the controls already in place, and the regulatory drivers — fixed-fee quote follows.

  2. 2

    On-site monitoring

    Personal sampling, area sampling, and instrument logging across a representative shift or task.

  3. 3

    Lab analysis

    Where samples need analysis — lead, dust, welding fume — they're sent to IANZ-accredited partner laboratories. Chain of custody preserved end-to-end.

  4. 4

    Report against WES

    Results evaluated against Workplace Exposure Standards, ASHRAE guidance, and applicable AS/NZS standards.

  5. 5

    Recommendations & re-test

    Practical controls following the hierarchy, plus validation sampling once they're in place.

Built for New Zealand industries

From construction sites to commissioning.

Workplace exposure data delivered for the industries where it matters — sites where regulators ask, insurers ask, or workers ask. The method is the same; the report is shaped to the audience that needs it.

Construction · Manufacturing · Agriculture · Healthcare · Education · Local Government · Forestry · Marine · Mining · Public sector

Talk to us about your industry

Two ways to start

Bring data to your safety case.

Tell us the hazard, the workforce, and the deadline. We'll match the right method, the right standard, and the right hygienist.

Request an assessment Talk to a hygienist