CEH Laundry and Linen Management 3 — Questions and Answers
Question 1: Which type of stain requires cold water treatment rather than hot water to prevent it from setting?
- Grease stains
- Protein-based stains such as blood or egg (Correct answer)
- Ink stains
- Rust stains
Correct answer: Protein-based stains such as blood or egg
Hot water coagulates proteins and permanently sets blood and similar stains, so cold water must be used first.
Question 2: What does the term 'rewash rate' measure in a hotel laundry operation?
- The percentage of linen items needing a second wash cycle due to inadequate cleaning (Correct answer)
- The frequency of machine maintenance cycles
- The ratio of soiled linen to clean linen on hand
- The number of times each linen item is washed per year
Correct answer: The percentage of linen items needing a second wash cycle due to inadequate cleaning
Rewash rate tracks the percentage of items that fail quality inspection and must be laundered again, reflecting wash formula effectiveness.
Question 3: Which regulatory agency standard must commercial laundries meet regarding water temperature for sanitizing healthcare or food-service linens?
- OSHA 1910.132
- CDC/EPA guidelines requiring 160°F (71°C) or chemical sanitization equivalent (Correct answer)
- ADA Title III
- NFPA 101 Life Safety Code
Correct answer: CDC/EPA guidelines requiring 160°F (71°C) or chemical sanitization equivalent
CDC and EPA guidelines specify 160°F hot-water washing or an equivalent approved chemical sanitizer for effective pathogen elimination in institutional linens.
Question 4: An executive housekeeper is evaluating linen quality. Which metric best indicates fabric longevity?
- Thread count per square inch
- Tensile strength after repeated washing (Correct answer)
- Color brightness after first wash
- Weight per dozen pieces
Correct answer: Tensile strength after repeated washing
Tensile strength retention after multiple washes is the most reliable indicator of how long a fabric will remain serviceable.
Question 5: In laundry operations, what is the role of an emulsifier in the wash formula?
- To raise the pH and break down alkaline soils
- To suspend oily and greasy soils so they can be rinsed away (Correct answer)
- To remove mineral deposits from hard water
- To sterilize microorganisms in soiled linen
Correct answer: To suspend oily and greasy soils so they can be rinsed away
Emulsifiers surround and suspend oil-based soils, allowing them to be carried away during the rinse cycle.
Question 6: What is the recommended action when linen arrives from an outside laundry vendor and shows signs of cross-contamination with chemical odors?
- Use it immediately but air it out first
- Return the entire delivery and file a non-conformance report (Correct answer)
- Re-rinse in the on-premises laundry before use
- Spray with deodorizer and place in storage
Correct answer: Return the entire delivery and file a non-conformance report
Chemically contaminated linen from a vendor must be returned and documented through a non-conformance report to maintain quality standards and accountability.
Question 7: Which factor most directly influences the choice between a tunnel washer and a conventional batch washer for a large hotel?
- Availability of organic detergents
- Volume of linen processed per hour and labor cost (Correct answer)
- Guest preference for linen texture
- Color of the housekeeping uniforms
Correct answer: Volume of linen processed per hour and labor cost
Tunnel washers are selected for high-volume operations because they process linen continuously, reducing labor and cycle time compared to batch washers.
CEH Laundry and Linen Management 3
Which type of stain requires cold water treatment rather than hot water to prevent it from setting?