HSPA Water Quality in Sterile Processing

Question 1

According to AAMI standards, what type of water should be used for the final rinse of surgical instruments?

Accepted Answer

Critical water (deionized, distilled, or reverse osmosis)

Answer

Tap water

Answer

Softened water

Answer

Sterile injectable water

Question 2

What is the primary concern with using tap water for the final rinse of surgical instruments?

Accepted Answer

Tap water contains minerals and chemicals that can leave deposits on instruments

Answer

Tap water is too cold for effective rinsing

Answer

Tap water causes immediate corrosion of stainless steel

Answer

Tap water is incompatible with automated washers

Question 3

What does the term 'critical water' refer to in sterile processing?

Accepted Answer

Water meeting specific purity standards (low conductivity, low endotoxins) used in final rinse steps

Answer

Water used exclusively inside steam sterilizers

Answer

Water that is sterile and pyrogen-free for injection

Answer

Water tested hourly for bacterial contamination

Question 4

What is the maximum conductivity level recommended by AAMI ST108 for critical water used in instrument reprocessing?

Accepted Answer

15 µS/cm

Answer

500 µS/cm

Answer

100 µS/cm

Answer

250 µS/cm

Question 5

Which process removes dissolved mineral ions from water by passing it through ion exchange resins?

Accepted Answer

Deionization

Answer

Reverse osmosis

Answer

Distillation

Answer

Microfiltration

Question 6

What effect can hard water have on surgical instruments during reprocessing?

Accepted Answer

It can cause mineral deposits and spotting on instrument surfaces that may interfere with function

Answer

It makes instruments more flexible and easier to handle

Answer

It increases the efficacy of sterilization processes

Answer

It has no measurable effect on instrument quality

Question 7

Which water quality parameter is most directly used to indicate total dissolved solids (TDS) in sterile processing water systems?

Accepted Answer

Conductivity

Answer

pH

Answer

Turbidity

Answer

Temperature