IEH Occupational Hygiene Tool

Chemical Exposure Screening Checklist & Control Banding Guide

A practical chemical exposure screening tool that helps users review SDS information, check possible PEL relevance, identify exposure and control gaps, and determine whether further occupational hygiene assessment or monitoring may be needed.

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Chemical Exposure Screening Tool illustration
PEL Lookup and Screening

Search the PEL database and assess exposure control needs

For mixtures, search each hazardous ingredient from SDS Section 3. The product trade name itself may not appear in the PEL table.

1. Product, ingredient and PEL lookup

This lookup reads the JSON file saved at /wp-content/uploads/ieh-data/sg-pel-database.json.

Open IEH PEL Lookup Tool
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Selected PEL record

If no match is found, this does not mean the substance is safe. Always verify the SDS, official PEL schedule and relevant occupational hygiene guidance.

2. SDS signal word and H-statements

Tick the health-related GHS H-statements shown in SDS Section 2. These estimate the hazard band.

3. SDS P-statements and existing controls

Tick P-statements from the SDS and existing workplace controls. The tool will identify possible control gaps.

Controls currently in place

4. Exposure potential and control gaps

Estimate exposure potential during normal work, cleaning, maintenance or foreseeable abnormal conditions.

Known gaps or warning signs

Screening Result

Your result will appear here after completing the checklist.

PEL status –
Hazard band –
Exposure band –
Control approach –
Priority

Recommended next actions

    Key control gaps to review

      Screening summary

      Understanding the Output

      How to interpret the control recommendation

      This is a screening guide. A listed PEL indicates that exposure comparison may be relevant, but the actual need for monitoring depends on the substance, process, exposure route, worker group and controls.

      Control 1

      Good general ventilation, safe work procedures, training, housekeeping and routine chemical hygiene practices.

      Control 2

      Engineering control such as local exhaust ventilation, source capture, improved ventilation or work practice control.

      Control 3

      Containment, enclosure, closed transfer, segregation, restricted access or significant process redesign.

      Control 4

      Specialist occupational hygiene review, exposure monitoring strategy, toxic substance review and professional control design.

      Important disclaimer: This tool provides preliminary PEL lookup, chemical exposure screening and control-banding-style guidance only. It does not replace a formal risk assessment, statutory toxic substances monitoring, occupational hygiene exposure assessment, SDS classification review, medical advice, legal compliance review or professional judgement by a competent person. PEL data must be verified against the latest official Singapore legislation and relevant guidance before formal use.

      Need help assessing chemical exposure at your workplace?

      IEH can support SDS review, PEL interpretation, chemical exposure screening, control banding, personal air monitoring, area monitoring, LEV review, exposure interpretation and occupational hygiene reporting.

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