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Dangelmayer Associates, L.L.C. - Trusted ESD Control Programs Since 1978 Large Scale ESD Event with a Lightning Strike to a Jet Plane
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Cleanroom Electrostatic Contamination & ESD

Program Management


We offer the only team of experts with both cleanroom and ESD diagnostic expertise.  In fact, we have written the book on ESD programs for Class 0 devices in cleanrooms.   We also have the world’s foremost ionization expert and can develop cleanroom construction specifications for today’s technology.   Thus, we are uniquely qualified to resolve any ESD or contamination issue in cleanroom applications.  


Overview: Provide technical advice and solutions to electrostatic contamination issues utilizing a three-pronged approach:

  • Diagnose and Solve Cleanroom/contamination Issues
  • Diagnose and Solve Static Control Issues
  • Provide Education to personnel in contamination and static control principles to implement ongoing solutions, including the generation of corporate cleanroom requirements
  • This methodology is effective in preventing electrostatic contamination through all the stages of planning, design, construction, and operation of cleanrooms


The methodology includes the following four phases:

1. Pre-Visit Discussions and Investigations

  • Contact stakeholders to define requirements
  • Review existing documentation
  • Summarize current program and anticipated future needs

2. On-site Visits

  • As needed to review current practices, investigate problems, and propose solutions.
  • Detailed Findings Report provided.
  • Review of industry “best practices” and their applicability.
  • Change implementation planning comparing current methods with industry standards and recommendations for new methods, test limits, audit procedures, instrumentation, etc.

3. Follow-up visit by D.A. personnel as needed

  • Further evaluate the recommendations and their efficacy in resolving problems.
  • Implement a personnel training program as needed, including web-based training
  • Ongoing review of all planning, construction, and operations documents


4. Final report based upon the findings from the visits, data collected and resulting defect reduction. Final design and construction documentation.


Description of Services

1. Pre-Visit Discussions and Investigations

  • On-line teleconferences with company personnel to fully understand the manufacturing process in detail and describe the test methodologies in use.
  • Determine and agree upon an appropriate monitoring plan to measure defects on product and other surfaces
  • Review of past/current data to understand trends/etc.

i. Airborne particle count

ii. Foreign material defects

  • Review of current cleanroom specifications and procedures
  • Summarize future requirements
  • Provide recommendations regarding 3rd Party cleanroom certification.




2. On-site Visits

  •       Typically a 3-day visit with at least two personnel from Dangelmayer Associates to evaluate the cleanroom and static control issues
    • Day 1 – Cleanroom-focused evaluation

i. Make airborne particle counts, focusing on locations near operating equipment.

ii. Examine the surface cleanliness of the product as it moves between processes, identify particle sources.

iii. Determine the effectiveness of any cleaning operations.

iv. Evaluate cleanroom protocol, handling, cleaning, and personnel related issues.


    • Day 2 – Static-focused audit evaluating static generation and any existing means for mitigation.

i. Pay particular attention to residual charge from the manufacturing operations, cleaning operations, coloring operations, and unwind/rewind operations

ii. Evaluation of all static mitigation methods and corporate static control program


    • Day 3 - Evaluation of any remaining issues

i. Additional review of issues previously indentified.

ii. Preliminary testing of any static or foreign material mitigation techniques.

iii. Closing meeting to review findings.

iv. Detailed report within 2-weeks of the first visit with preliminary recommendations.


3. Follow-up

  •       Six - Eight week waiting period for implementation of preliminary recommendations
  •       Bi-weekly (or as needed) teleconferences to review progress.
  •       Possible follow-up visit by D.A. personnel to further evaluate the recommendations and problem resolution.
  •       Investigate further recommendations as needed
  •       Preliminary design and construction documentation for review
  •       Ongoing support of the contamination and static control program development and implementation as needed


4. Detailed final report issued based upon the findings from the visits, data collected and resulting defect reduction.

5. Detailed design and construction documentation for electrostatic and other contamination issues.


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