Where the change evidence comes from.
All regulatory content derives from Safe Work Australia publications. Comparison material is used as change evidence, not as the canonical limit list, and the canonical WEL publication governs future values.
Experimental tool — not approved for decision-making use. A screening aid only; it does not determine compliance, safety or exposure, and its coverage is incomplete.
Sources
- WES→WEL context — confirms the WES applies through 30 November 2026 and the WEL from 1 December 2026.
- Workplace exposure limits for airborne contaminants — the canonical future WEL publication.
- Changes between the WES and the WEL — change evidence, including individual-limit, notation and NTGC changes.
- Decision RIS — 9 chemicals (24 June 2026) — no new exposure levels commence on 1 December 2026 for benzene, chlorine, copper, formaldehyde, hydrogen cyanide, hydrogen sulphide, nitrogen dioxide, respirable crystalline silica and titanium dioxide.
What is materialised
BecSpec ships a compact export derived from these sources: new WEL entries, NTGC substances, removed entries, the June-2026 decision overrides, and reviewed deterministic numeric deltas for the substances it can represent exactly. Complex delta cases are carried as review-required with their evidence rather than converted into a fabricated numeric change. Safe Work Australia is not the workplace regulator in each jurisdiction; practical commencement should be confirmed for your state or territory.
How your inventory is handled
Uploaded files are parsed and screened entirely in your browser. The inventory is not transmitted to BecSpec or any third party, and nothing is retained after you leave the page. The only network request the tool makes is fetching the shipped transition dataset.