Water Treatment and Quality Flashcards
6 cards from real CHT practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Water Treatment and Quality flashcards as text
What is the maximum allowable level of chloramine in dialysis water according to AAMI standards?
Answer: 0.1 mg/L
AAMI standards require chloramine levels in dialysis water to be below 0.1 mg/L to prevent hemolytic anemia.
Which test is used to detect chloramine in dialysis water?
Answer: OT test
The OT (orthotolidine) test is used specifically to detect chloramine, while the DPD test detects free chlorine.
How often should product water be tested for bacteria in a dialysis facility?
Answer: Monthly
AAMI guidelines require dialysis product water to be tested for bacteria at least monthly.
What is the maximum allowable endotoxin level in standard dialysis water?
Answer: 1.0 EU/mL
AAMI standards set the maximum endotoxin level for standard dialysis water at 1.0 EU/mL.
Which component of a water treatment system is responsible for removing bacteria and endotoxins through size exclusion?
Answer: Reverse osmosis membrane
The reverse osmosis membrane removes bacteria, endotoxins, and most dissolved solids through semipermeable filtration.
What is the purpose of a water softener in a dialysis water treatment system?
Answer: Remove calcium and magnesium ions
Water softeners use ion exchange to remove calcium and magnesium ions, preventing scale buildup that can damage the RO membrane.