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CWEA WASTEWATER LABORATORY ANALYST FINAL PAPER 2026 VERIFIED QUESTIONS AND DETAILED ANSWERS

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CWEA WASTEWATER LABORATORY ANALYST FINAL PAPER 2026 VERIFIED QUESTIONS AND DETAILED ANSWERS

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CWEA WASTEWATER LABORATORY ANALYST CERTIFICATION

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CWEA WASTEWATER LABORATORY ANALYST CERTIFICATION

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CWEA WASTEWATER LABORATORY
ANALYST FINAL PAPER 2026 VERIFIED
QUESTIONS AND DETAILED ANSWERS

⩥ How long does it take for the autoclave to heat up? Answer: 15
minutes

⩥ Sludge density Answer: 40% greater than water

⩥ BOD incubation period Answer: 5 Days

⩥ BOD preservation Answer: Store at 4C 48 hours

⩥ Metal preservation Answer: Add HNO3 TO PH <2 6 months

⩥ Solids preservation Answer: Store at 4C 7 days

⩥ Nitrate preservation Answer: Add H2SO4 TO pH <2 Store at 4C 48
hours

⩥ Oil and grease preservation Answer: Add H2SO4 TO pH <2 Store at
4C 28 days

, ⩥ Oil and grease (hexane) storage container Answer: Amber glass bottle

⩥ Turbidity preservation Answer: Store at 4C 48 hours

⩥ Graduated Cylinders Answer: Should NOT be heated

⩥ Final temperature of TSS Total Suspended Solids Answer: 103-105

⩥ Final temperature of TDS Total Dissolved Solids Answer: 180

⩥ Final Temperature for VSS Volatile Solids Answer: 550

⩥ BOD sample is prepared in Answer: The BOD Bottles

⩥ Catalyst Answer: changes the speed of the reaction

⩥ Fume hood face velocity Answer: 70-100

⩥ The most common preservation Answer: <6 C

⩥ How to report TNTC Answer: gravimetric mean

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Uploaded on: November 6, 2025
Number of pages: 12
Written in: 2025/2026
Type: Exam (elaborations)
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cwea wastewater laboratory analyst final paper 202

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