SPECIALIST CERTIFICATION
FAQ about the specialist certification
What do I need to study in order to pass the specialist exam?
There are 100 questions (single choice, multiple choices or true/false) for the specialist exam. The exam is based on the materials of WFI training courses. If you study the course material properly, you should have no problem passing the exam. We also recommend that you have at least one year of field experience in the air/liquid filtration & separation industry. WFI does offer both online live courses and course recordings to help you study.
What is the cost to take the exam?
Testing fees are included in the specialist registration fee for applicants.
If the applicant fails to pass the exam, and a re-take is necessary, there will not be any fee charged to re-take the exam. There is no fee to renew certification for each renewable cycle.
What are the renewal requirements?
To maintain CFSS Certification, you must complete four (4) continuing education credits (CEC) annually from the categories listed below.
4 Credits:
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Attended WFI Courses
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Attended WFI Educational Webinars
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Attended WFI Annual Conference
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Attended seminar on air/liquid filtration & separation given by a related association or organization (such as ASHRAE, Filtech, EPA, AIChE, AFS, INDA or equivalent)
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Attended and passed a college-level course on air/liquid filtration & separation
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Published in a well established journal, conference proceeding or magazine related to air/liquid filtration & separation
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Attended training seminar related to air/liquid filtration & separation given by a supplier/manufacturer of air/liquid filtration & separation related products
When / Where can I take the exam next?
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The next CFSS Exam will be administered once a year online respectively (November 30th).