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Welcome to the NLGI Exam Preparation 

 

The on-line certification CLGS exam preparation is broken down into lessons lasting approximately 15 to 50 minutes with quizzes following each lesson.

Click here for Certification Exam Preparation

Provides a complete content review and examination of the subject matter where mastery is required.

UPDATED as of April 2, 2025 – NEW CONTENT ADDED!  Certification Preparation for  NLGI Certified Lubricating Grease Specialist (CLGS) preparation course.