CIS Water Quality and Chemistry Questions and Answers 2

Question 1

What is the recommended water quality standard for the final rinse of surgical instruments?

Accepted Answer

Critical water meeting AAMI TIR34 standards

Answer

Tap water is acceptable

Answer

Grocery store distilled water

Answer

Standard home-filtered water

Question 2

What problems can hard water cause in instrument reprocessing?

Accepted Answer

Mineral deposits on instruments, reduced detergent effectiveness, staining, and sterilizer buildup

Answer

No effect on reprocessing

Answer

Only affects drinking water taste

Answer

Causes immediate rusting

Question 3

Why is pH monitoring important in instrument cleaning solutions?

Accepted Answer

Incorrect pH can damage instruments, reduce cleaning efficacy, and compromise the protective passive layer

Answer

pH does not affect cleaning

Answer

Only matters for wastewater disposal

Answer

Only required for manual cleaning

Question 4

What is the purpose of conductivity testing in reprocessing water?

Accepted Answer

To measure total dissolved solids as an indicator of water purity

Answer

To check electrical conductivity for electrosurgery

Answer

To verify water temperature

Answer

To test for bacteria

Question 5

How does chloride content in water affect surgical instruments?

Accepted Answer

Chloride ions attack the protective chromium oxide layer, causing pitting and stress corrosion cracking

Answer

No effect on stainless steel

Answer

Only affects plastic instruments

Answer

Makes instruments more corrosion-resistant

Question 6

What role does water temperature play in enzymatic detergent effectiveness?

Accepted Answer

Enzymes have an optimal temperature range and are denatured by excessive heat

Answer

No effect on performance

Answer

Hotter is always better

Answer

Only works in cold water