Chemical Exposure Assessment Calculator

Estimate airborne chemical concentration using the AIHA well-mixed room model, calculate exposure index versus OEL, and assign a risk rating.

Generation rate (mg/min)

Ventilation rate (m³/min)

Room volume (m³)

Exposure duration (min)

OEL (mg/m³)

Body weight (kg)

Tab to move between fields

8-hr TWA (mg/m³)

1.83

Steady-state conc. (mg/m³)2

Exposure index (C/OEL)0.04

Risk rating (1-5)1

Dose (mg/kg/day)0.13

Time to 95% C_ss (min)120

Actual Conc Mg M32

How to Use This Calculator

Enter Generation rate (mg/min), Ventilation rate (m³/min), and Room volume (m³).
Set Exposure duration (min), OEL (mg/m³), and Body weight (kg).
Review the 8-hr TWA (mg/m³) result.
Use Steady-state conc. (mg/m³) and Exposure index (C/OEL) to inform your decision.

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