Environmental Monitoring & Assessment Flashcards

Color differences between samples are so large that masking light cannot hide them. What is the best option?

Answer: Use opaque or colored containers, or blindfold assessors

Opaque containers or blindfolds remove visual cues when lighting alone can't.

Humidity in the test room is high during a study of crisp snack crackers. What is the main concern?

Answer: Samples may absorb moisture and lose crispness, adding texture variability

Moisture uptake changes texture, so humidity should be controlled or samples kept sealed until served.

What is a practical way to confirm the test room is free of background odors before a session?

Answer: Have a trained staff member do a sniff check of booths and air

A pre-session sniff check by a trained person catches odor problems before they affect data.

A sensory lab has just been repainted and re-carpeted. What should happen before testing resumes?

Answer: Ventilate and wait until off-gassing odors are gone

New materials release volatiles that can bias evaluations until they dissipate.

Compared with laboratory booth testing, what is a key tradeoff of in-home use tests?

Answer: More realistic use conditions but less environmental control

Home tests gain realism but lose control over lighting, timing, and preparation.

Why should booth surfaces and walls avoid glossy finishes?

Answer: Glossy surfaces cause glare and reflections that affect visual judgments

Glare and reflections can distort how samples look and tire assessors.

How does a central location test (CLT) typically compare with a dedicated sensory lab for environmental control?

Answer: CLTs usually offer less control over lighting, odor, and noise

CLTs in rented or public spaces usually can't match the controlled conditions of a dedicated lab.