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Understanding Staining and Corrosion on Surgical Instruments Quiz

Enhance your understanding of spotting, staining, and corrosion on surgical instruments with this focused study aid. Learn to identify and address common maintenance issues, ensuring optimal performance and compliance with...

Questions: 25 | Attempts: 30 | Last updated: Aug 5, 2025

Sample Question 1
What does brown/orange staining on instruments indicate?

Paint residue from nearby construction

Not Rust, a result of high pH surface deposits caused by: Chlorohexidine use, improper soaps/detergents, cold sterilization solution, possibly baked on blood, soaking in saline.

Ink stains from improper labeling

Rust from exposure to moisture

Sample Question 2
What causes Dark Brown or Black Staining on Instruments?

High pH alkaline stain. May be caused by excessive use of detergents.

Low pH (less than 6) acid stain. May be caused by improper detergents and soaps or dried blood.

Exposure to sunlight. May cause discoloration over time.

Presence of bacteria. May lead to discoloration due to organic matter.

Sample Question 3
What causes bluish black staining on instruments?

Reverse plating, different metals ultrasonically processed together . Exposure to saline , blood or potassium chloride will cause this stain to occur.

Excessive exposure to UV light

Improper sterilization technique

Low quality metal used in manufacturing

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