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ABC Wastewater Level 3 – Lab Questions and correct Answers To have significant meaning for laboratory tests of the evaluation of a wastewater treatment plant's performance the best method of sampling is A. Grab sampling B. Hourly sampling C. Sampling during peak flow D. Proportional composite sampling E. Automatic sampling D. Proportional composite sampling BOD samples should be collected before chlorination because A. Chlorine reacts with the buffer solution B. Chlorine interfer...

ABC Wastewater Level 3 Lab Analyst Exam Questions with Correct Solutions Already Graded A+!!!Updated 2025/2026 New Syllabus Exam Preparation Material<<LATEST VERSION>> Silver sulfate in COD analysis is used for what? - ANSWER as a catalyst Potassium dichromate is an example of? - ANSWER an oxidizing agent Nitric acid (NO3) is an? - ANSWER oxidizer the tss lab procedure uses what type of filter? - ANSWER glass fiber how do you check a manhole for leaks? - ANSWER check f...

ABC WASTEWATER LEVEL 3 LAB EXAM 50 QUESTIONS & CORRECT ANSWERS LATEST 2025

To have significant meaning for laboratory tests of the evaluation of a wastewater treatment plant's performance the best method of sampling is A. Grab sampling B. Hourly sampling C. Sampling during peak flow D. Proportional composite sampling E. Automatic sampling - correct answer D. Proportional composite sampling BOD samples should be collected before chlorination because A. Chlorine reacts with the buffer solution B. Chlorine interferes with the activity of organisms C. Chlorine ...