Practice Test Geeks(CPT) Certified Packaging Technologist Practice Test
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Quality Control & Testing Flashcards

7 cards from real CPT practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Quality Control & Testing flashcards as text

  1. Which test method determines the stacking strength of a filled corrugated container using the McKee formula approach?

    Answer: ASTM D642

    ASTM D642 is the standard test method for determining compressive resistance of shipping containers, related to stacking strength evaluation.

  2. What is the primary function of a leak detector using a vacuum chamber (bubble test)?

    Answer: Detect package leaks by observing air bubbles escaping into water under vacuum

    The vacuum bubble test submerges a package in water under vacuum; leaks are revealed by streams of bubbles escaping the package.

  3. Process capability index Cpk differs from Cp because Cpk:

    Answer: Accounts for process centering relative to specification limits

    Cpk adjusts for process mean offset from the specification center, making it a more realistic capability measure than Cp.

  4. In packaging testing, which condition set is commonly called 'tropical' conditions for climate testing?

    Answer: 40°C / 75% RH

    40°C / 75% RH is the ICH-defined accelerated tropical condition used for stability and performance testing of pharmaceutical and food packaging.

  5. What is the purpose of a Gauge R&R (Repeatability & Reproducibility) study in packaging QC?

    Answer: Quantify measurement system variation relative to total process variation

    Gauge R&R studies decompose measurement variation into repeatability (equipment) and reproducibility (operator) components to assess measurement system adequacy.

  6. Which property does a Gurley densometer measure in paperboard or film?

    Answer: Air permeability (porosity)

    A Gurley densometer measures the time for a fixed volume of air to pass through a material, indicating its porosity or air resistance.

  7. In a quality management system, a corrective action (CA) differs from a preventive action (PA) in that CA:

    Answer: Eliminates the root cause of a nonconformance that has already occurred

    Corrective action eliminates the root cause of an existing nonconformance, while preventive action addresses potential future problems.