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BOTTLE SCHOOL | SECTION 2 KNOWLEDGE CHECK
Materials & Compatibility

Section 2 Knowledge Check

Congratulations on completing the Materials & Compatibility section of Bottle School!

You've explored common packaging materials, learned about sustainability and recycling, and discovered why product and packaging compatibility matters.

Now answer five questions to reinforce those important concepts.

How It Works

Choose one answer for each question and select Check My Answers. You'll immediately see your score, the correct answers, and explanations for each question.

There is no required passing score. You can review the material and try again as often as you like.

Test Your Knowledge

Materials & Compatibility

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1. Which packaging resin is commonly selected when a clear, glass-like appearance is desired?

PET is often selected for its clarity. However, a clear appearance alone does not identify the resin or guarantee compatibility.

2. What does HDPE stand for?

HDPE means High-Density Polyethylene. It is widely used in household, industrial and personal care bottles.

3. What does PCR mean in packaging?

PCR stands for Post-Consumer Recycled. It describes material recovered after use by consumers or other end users and incorporated into new products.

4. Does a resin identification code guarantee that a package can be recycled locally?

Resin identification codes identify plastic categories. They do not guarantee that local recycling facilities accept or process a package.

5. A bottle works well for one cleaning formulation. Can you automatically approve it for another?

Formulations can vary in ways that affect the bottle, closure, liner, or dispensing system. Product-specific compatibility evaluation is important.

Your Knowledge Check Results
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Great Work!

Coming Up Next

Section 3 — Closures & Functionality

Our next three lessons explore how bottles are closed, sealed, and used to dispense products.

Lesson 9: Understanding Neck Finishes

Lesson 10: Caps, Closures & Dispensing Systems

Lesson 11: Liners, Seals & Tamper Evidence

Next: Lesson 9 — Understanding Neck Finishes →
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Every Knowledge Check reinforces your understanding of rigid packaging. Continue learning at your own pace as we explore the components that make a complete package.

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