Practice Test Geeks(CPT) Certified Packaging Technologist Practice Test
← All CPT Flashcard Decks

Shelf Life & Product Protection 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 Shelf Life & Product Protection flashcards as text

  1. Which standard method is commonly used to determine the seal integrity of flexible packages by immersing them in a dye solution under vacuum?

    Answer: ASTM F1585 dye penetration test

    ASTM F1585 (dye penetration test) involves immersing sealed packages in a colored dye solution under vacuum and inspecting for dye intrusion, detecting seal defects and leaks.

  2. When conducting a product compatibility study for a new packaging material, which migration parameter is most important for food-contact applications under FDA regulations?

    Answer: Overall migration limit (OML)

    The Overall Migration Limit (OML) defines the maximum mass of non-volatile substances that may migrate from food-contact packaging into food, a key compliance parameter under FDA and EU food contact regulations.

  3. Real-time stability studies differ from accelerated shelf life testing in that they:

    Answer: Store products at intended use conditions for the actual expected shelf life

    Real-time stability studies store products at intended use conditions (e.g., ambient temperature and humidity) for the actual projected shelf life period, providing definitive shelf life confirmation.

  4. The critical water content (CWC) of a food product is the moisture level above which:

    Answer: Product quality falls below an acceptable limit

    The critical water content (CWC) is the moisture level at which the product's quality attribute (texture, flavor, microbiological safety) falls below the acceptable minimum, marking the end of shelf life.

  5. For pharmaceutical packaging, the ICH Q1A guideline for stability testing defines 'long-term' storage conditions as which temperature and relative humidity combination?

    Answer: 25°C / 60% RH

    ICH Q1A defines long-term stability testing at 25°C / 60% RH for pharmaceutical products intended for temperate climates, providing a standardized baseline for shelf life determination.

  6. Which packaging test method is used to evaluate the closure integrity of rigid containers by measuring the torque required to remove the cap?

    Answer: Closure removal torque test

    The closure removal torque test measures the force required to open a cap, ensuring it is within the specified range to confirm both adequate sealing and consumer usability.

  7. In the context of MAP for bakery products, CO₂ is flushed into the package primarily to:

    Answer: Inhibit mold and rope-forming bacteria growth

    Carbon dioxide (CO₂) has antimicrobial properties that inhibit mold growth and rope-forming bacteria, making it essential in MAP for bakery products to extend shelf life without refrigeration.