Maintain the Health and Safety of Your Buildings Through Disinfection

Intertek’s Disinfection Process Management program was designed with the health and safety of your employees, and ours, in mind. We have the capability to provide our clients with the tools needed to assure they are complying with necessary measures to prevent the spread of infectious microorganisms (bacteria, viruses, etc.) today and in the future.

Download our Disinfection Process Management Fact Sheet

Our post-cleaning verification protocols have been developed based on available industry guidance. These protocols and associated consulting services support cleaning and disinfection within your buildings in order to help you prepare for re-opening and to maintain ongoing business operations. Our extensive number of expert industrial hygienists can provide you with the confidence and assurance that your work environment will be suitable for re-entry and re-occupancy.

Disinfection Management Services Include:

  • Initial Area Assessments and Consulting
  • Cleaning and Disinfection Protocol Preparation and Review
  • Contractor Identification or Subcontracting
  • Cleaning and Disinfecting Process Oversight
  • Post-Cleaning Verification Assessment
  • Initial and Periodic Cleaning Certifications

Pre-Cleaning Consulting Services:

  • Initial Area Assessments and Consulting
  • Verbal communication and visual (in-person or virtual) walk through
  • Cleaning and Disinfection Protocol Review
  • Intertek reviews client-provided cleaning protocols
  • Contractor Identification, Subcontracting and Coordination

Cleaning and Disinfection Services:

  • Cleaning disinfecting process oversight
  • Ensure contractor is complying with established protocols

Enhanced Cleaning VS. Disinfection

Enhanced Cleaning

  • Conducted more often
  • Targets all common areas and high contact surfaces
  • Utilizing registered disinfectant cleaning products


  • Performed if a positive individual enters the building
  • Efforts should be made to trace and target all areas in which the individual came in contact
  • Typically performed using electrostatic or fogging delivery systems

Post-Cleaning and Disinfection Services

Intertek-PSI will evaluate the effectiveness of the disinfection using combinations of the following protocols:

  • Observation of the work areas to document that the areas are free of obvious contamination.
  • A “white glove test” to verify no dust, debris, or residues remain within the cleaned areas.
  • Surface swab samples of select touch surface areas for laboratory analysis.
  • Surface samples will be collected for one of the following:
    • Field analysis utilizing ATP testing technology (immediate pass/fail reading)
    • Laboratory analysis for total culturable bacteria plate count, as a surrogate for COVID-19
    • Laboratory RT-qPCR analysis for identification of SARS-CoV-2 and COVID-19 virus

An unsatisfactory result for any of the above will result the need to reclean/disinfect specific areas.

Intertek-PSI's Industrial Hygiene Laboratory

Intertek-PSI's in-house Industrial Hygiene Laboratory resource and differentiator for our comprehensive suite of environmental services. Our lab offers a wide range of analytical services that are crucial for environmental and occupational health assessments. Accredited by NVLAP and AIHA LAP, our experienced team delivers precise results, enabling clients to mitigate risks and uphold environmental stewardship.

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