Accredited laboratory No. 1599 · ČSN EN ISO/IEC 17025naturchem@naturchem.cz+420 603 216 983
Measurements · studies · documentationRequest a quote

Diisocyanate measurement (MDI, TDI, HDI)

PUR foams, painting or bonding with isocyanates? We measure exposure to MDI, TDI, HDI and other diisocyanates in actual operation — report for regional hygiene station, job categorisation and measure proposals.

Credibility and authorisations

Accredited laboratory No. 1599ČSN EN ISO/IEC 17025Outputs for KHS, ČIŽP and regional authoritiesEIA authorisation and expert reports

Service overview

When you need this service

  • Job categorisation or regional hygiene station request regarding isocyanates
  • PUR spraying, painting or bonding with diisocyanates in operation
  • Technology, materials or ventilation change for reactive systems
  • Verifying extraction and PPE effectiveness after a complaint or inspection

What we provide

  • We measure diisocyanate exposure (MDI, TDI, HDI and others) with personal and stationary sampling
  • We focus on concentration peaks during spraying, pouring and hot processes
  • We assess exposure against hygiene limits and regional hygiene station requirements
  • We propose technical and organisational measures to reduce exposure

What you receive

  • diisocyanate measurement report with exposure assessment
  • documentation for job categorisation and measures under public health legislation
  • technical and organisational measure recommendations

How to get started

For an initial scope assessment, please send:

  • safety data sheets of materials and mixtures used
  • description of work operations, extraction and PPE
  • workplace layout and shift pattern
Send inquiry
Send inquiry
Additional information for preparing your inquiry

Practical project examples

  • MDI measurement during PUR foam production and processing
  • TDI exposure in paint shops and polyurethane system application
  • measurement during bonding and lamination with isocyanate adhesives

Typical mistakes and risks

  • Exposure estimated from safety data sheet only without operational measurement
  • Measurement outside peaks during spraying or pouring
  • Failure to consider secondary emissions during further PUR processing

FAQ for this service

When is workplace environment measurement required?

Workplace environment measurement is addressed during job categorisation, technology change, a new workplace, KHS instruction or when verifying employee exposure.

Which workplace environment factors do you measure?

Typically dust, chemical substances in workplace air, noise, vibration, lighting, microclimate and other factors depending on workplace characteristics, technology and work activity.

Can measurement serve as documentation for job categorisation?

Yes. Workplace environment measurement results are often used as documentation for job classification or reclassification.

Who may carry out measurement for job categorisation?

Measurement for classification into category 2, 3 or 4 may only be carried out by the employer through a holder of an accreditation certificate or authorisation for the relevant measurements, unless the employer is so qualified.

What is hazardous work?

Hazardous work is work classified in category 3 or 4, and also category 2 work designated as such by the relevant public health authority.

View all FAQ — Workplace environment and job categorisation

You may also be interested in

Workplace environment measurement

Comprehensive measurement of chemicals, dust and other factors.

View service

Automotive and production halls

Isocyanates in painting, bonding and PUR in interior production.

View service

Chemical substances in operation

Rules for storage, handling and responsibilities for chemicals.

View service

Send a description of the technology, authority requirements or available documents. We will propose the measurements, study or documentation needed for your purpose.

Request a quoteAccreditation & authorisations