Dose, TWA, peak exposure, and hearing protector adequacy against OSHA, NIOSH, ACGIH, and Australian HWSA 2022.

WBGT against ACGIH TLV-H, Thermal Work Limit (Brake & Bates 2002), and NOAA Heat Index. Includes Liljegren solar estimation and ACGIH Table 3 screening.

Gamma dose rate, radioactive decay, and unit conversion for NORM-handling environments. Secular equilibrium chain support for Ra-226, Ra-228, Th-232, and more.

Hand-arm vibration (ISO 5349) and whole-body vibration (ISO 2631) exposure assessment. EU Physical Agents Directive action and limit values.

UV and optical radiation exposure against ACGIH TLV-L and ICNIRP guidelines. EMF field strength assessment for workplace exposures.

Recommended weight limits and lifting index using the NIOSH Revised Lifting Equation (1994). Composite lifting index for multi-task assessments.

Compare occupational exposure limits across 12 jurisdiction tables: ACGIH TLV, OSHA, NIOSH, EU IOELV, EU CMD, UK EH40, AU WEL, NZ WES, Singapore WSH, and more. Enter a measured value to check compliance. 687 substances.

Calculate 8-hour TWA from multiple exposure periods and compare against OELs from 12 jurisdictions. Extended shift adjustment using Brief & Scala, OSHA, Quebec/IRSST, and pharmacokinetic models.

LEL and UEL assessment for flammable gases and vapours. Ventilation requirement estimation for confined space and indoor scenarios.

Correction factors (CF/RF) for 300+ compounds across RAE Systems, Industrial Scientific MX6, IGD/GenSenova, and Dräger instruments. Searchable by compound name or CAS. True concentration calculator included.

Hazard band classification for chemical exposure control decisions where quantitative measurement data is unavailable or limited.

Combined measurement uncertainty analysis for occupational exposure assessments per ISO GUM framework. Sampling, analytical, and variability components.

Airborne biological hazard assessment for bacteria, fungi, and endotoxin against ACGIH TLVs and WHO guidance. Exposure zoning and respiratory protection selection.

Water system risk scoring against AS/NZS 3666 and ASHRAE 188. Temperature, flow, deadleg, and system configuration inputs.

Risk group classification for biological agents per WHO Laboratory Biosafety Manual. Containment level mapping for laboratory and healthcare settings.

Bayesian and frequentist SEG analysis. AIHA risk band classification, lognormal fitting, exceedance fractions, and PDF reporting.