Every title in the series follows the same format. Tests 1 to 3/4 are the Learning Pack — practice questions with full explanations so you understand the why, not just the answer. Tests 4 to 8 are the Exam Format section — answer key only, timed practice that mirrors real exam conditions.  All titles are written by a Red Seal Steamfitter with 30 years of industrial experience and EOCP certifications in all four water and wastewater disciplines. Available exclusively through Amazon.