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CLS Exam Statistics & Costs

Exam Statistics & Costs for the Certified Lubrication Specialist (CLS) (CLS) exam - 6 in-depth guides to help you prepare with confidence. Browse all study resources or jump straight into a guide below.

CLS Pass Rate 2026: What the Data Shows

If you've searched for a hard number on how many people pass the Certified Lubrication Specialist exam, you've likely come up empty.

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