For Occupational & Industrial Hygienists

Spend less time on admin, more on the science.

HazNode® keeps every sample tied to its worker, task, SEG, agent, method and equipment at the point of capture — so your exposure assessment is defensible, your statistics run on the data you already have, and your report stops starting from a blank page.

Explore the platform

Built Around Your Workflow

The exposure assessment workflow, captured once.

No reconstructing context from a field notebook three weeks later. No exporting to a separate stats tool. No chasing lab portals. The record the field captures is the record the statistics run on and the report is written from.

Active air sampler attached at a worker's collar for breathing-zone sampling

SEG-structured sampling

Exposure data captured right the first time.

Build SEG-based sample plans before the visit, then capture each sample against the worker, task, agent, method and equipment as it happens — not from memory afterwards.

What you get

SEG-structured sample plans built before fieldwork
Worker, task, agent and method tied to every sample
Field conditions logged on site, not later

Analytical balance display during sample gravimetric analysis

Bayesian exposure statistics

World-class analysis on the data you already captured.

Descriptive statistics, distribution fitting and OEL comparison run on the exposure data already in the system — built on the Bayesian methodology used in Expostats, developed with a world leader in the field from the Université de Montréal.

What you get

GM, GSD, percentiles and exceedance fractions
Bayesian distribution fitting and OEL comparison
No exporting, no rebuilding the dataset

Sampling cassette chain-of-custody being documented on a tablet

Chain of custody & lab

Lab results land back where they came from.

Chain of custody is preserved end-to-end, lab intake comes straight from the project sample list, and results are ingested back to the originating sample — no copying values into a spreadsheet.

What you get

Chain-of-custody tracking from sample to lab
Results ingested back to the originating sample
Outstanding-sample visibility across the practice

Tabletop array of occupational hygiene sampling equipment ready for deployment

Defensible records

Reports that stand up to scrutiny.

Calibration history, equipment linkage and a complete sample lineage mean your assessment is auditable from breathing-zone to OEL comparison — and your reporting is consistent across consultants.

What you get

Calibration history with due-date alerts
Complete, auditable sample lineage
Consistent reporting across the team

Sound Familiar?

The things hygienists tell us before they switch.

I'm reconstructing sampling context from a notebook weeks after the visit.

Running statistics means exporting to another tool and rebuilding the dataset.

Chain of custody lives across a spreadsheet and an email trail.

Every report starts from a blank page.

Calibration records sit in a completely separate file.

Lab results get keyed in by hand, one value at a time.

Where The Value Lands

Defensible data, faster reporting, confidence in your numbers.

Hygienists don't buy software for a feature list — they buy back the hours lost to re-entry and reconstruction, and the confidence that the numbers in the report can be defended.

Defensible by default

Every sample carries its full context and lineage, so your assessment holds up when it matters — in front of a client, a regulator, or a court.

Reporting that keeps pace

Statistics and reports draw on the structured data already captured, so the write-up no longer lags weeks behind the fieldwork.

Statistics you can trust

Bayesian methods from the Expostats lineage are built in — rigorous analysis without leaving the system or second-guessing the maths.

Show us a recent survey. We’ll show you the time you’d get back.

30 minutes. Walk us through how you run a survey today — from sample plan to report — and we'll show the parts of HazNode® most relevant to where the hours go.