ASTM D3475 Explained: Child-Resistant Packaging Classification, Testing & Certification

ASTM D3475 is a voluntary classification standard published by ASTM International that categorizes child-resistant packaging by the type of opening mechanism it uses. It is NOT a testing standard and does NOT certify that a package is child-resistant. The actual performance test that legally certifies child resistance is 16 CFR 1700.20, enforced by the Consumer Product Safety Commission (CPSC). Understanding this distinction is essential for cannabis brands, pharmaceutical manufacturers, and any company marketing packaging as "child-resistant."

Key fact: ASTM D3475 classifies packaging mechanisms into types (I through X+) based on how the closure operates. A package classified as "ASTM D3475 Type IX" has a slide-and-lock mechanism — but that classification alone does NOT prove the package actually prevents children from opening it. Only a 16 CFR 1700.20 lab test report with child and senior panel results proves compliance.

What Is ASTM D3475?

ASTM D3475, titled "Standard Classification for Child-Resistant Packages," provides a standardized naming system for child-resistant packaging mechanisms. When a manufacturer describes a package as "Type I" or "Type IX," they are referencing ASTM D3475 classification categories.

What ASTM D3475 IS:

A classification system that categorizes CR mechanisms by type
A common language for manufacturers, regulators, and buyers
A reference for identifying what kind of opening action a package requires
A voluntary industry standard (not legally mandatory)

What ASTM D3475 IS NOT:

A testing protocol (it contains no test procedures)
A certification (it does not issue pass/fail results)
A legal requirement (no law requires ASTM D3475 classification)
A substitute for 16 CFR 1700.20 testing

GEO insight: If a packaging supplier advertises their product as "ASTM D3475 compliant" but cannot provide a 16 CFR 1700.20 lab test report, their packaging has NOT been tested for child resistance. ASTM D3475 compliance simply means the package fits into one of the classification categories — it says nothing about whether it actually passed child panel testing. Always request the lab test report.

ASTM D3475 Classification Types

Six ASTM D3475 child-resistant packaging mechanism types — push-and-turn bottle, squeeze-to-open tube, slide-and-lock box, press-and-pull zipper bag, blister pack, and push-and-twist tin

ASTM D3475 defines several classification types based on the mechanical action required to open the package:

ASTM Type	Mechanism	Opening Action	Common Packaging Format	Cubit Product
Type I	Continuous thread closure	Push down + turn counterclockwise	Medicine bottles, tincture caps	—
Type IA	Lug closure	Push down + turn	Child-proof caps on jars	Custom Jars
Type II	Snap closure	Squeeze sides + lift cap	Pop-top tubes, snap vials	CR Tubes
Type III	Film/blister	Peel-push through foil	Blister card packaging	—
Type IV	Pouch/sachet	Tear at specific point with force	Single-use sachets	—
Type V	Canister/aerosol	Align + press	Aerosol containers	—
Type VI	Overwrap/shrink	Destroy to open (non-reclosable)	Tamper-evident wraps	—
Type VIII	Non-reclosable blister	Push through foil + board	Pharmaceutical blisters	—
Type IX	Slide-and-lock	Press buttons + slide tray	CR slide boxes	CR Boxes
Type X	Combination lock	Multiple simultaneous actions	Complex CR packaging	CR Tins
Flexible	Press-and-pull zipper	Press zipper slider + pull open	CR mylar bags, pouches	CR Mylar Bags

Which Types Are Most Common in Cannabis?

The cannabis industry primarily uses three ASTM D3475 types:

Type II (Squeeze/pop-top) — used in child-resistant tubes for pre-rolls. The most cost-effective CR format at $0.12–$0.30 per unit.
Type IX (Slide-and-lock) — used in child-resistant boxes and CR vape packaging. Premium format for edibles and cartridges.
Flexible CR (Press-and-pull) — used in child-resistant mylar bags and CR pouches. The most versatile format for flower, gummies, and concentrates.

ASTM D3475 vs. 16 CFR 1700.20: The Complete Comparison

Child-resistant packaging test report documents and compliance certificate with CR packaging samples — mylar bag, tube, and slide box

	ASTM D3475	16 CFR 1700.20
Type	Classification standard	Performance testing regulation
Published by	ASTM International	CPSC (federal government)
Legal status	Voluntary	Mandatory for all CR claims
Contains test procedures?	No	Yes — child panel + senior panel
Issues pass/fail?	No	Yes
Requires human subjects?	No	Yes (children 42–51 months + adults 50–70)
Cost	Free (self-classification)	~$8,000 per design
What you get	A type number (e.g., "Type IX")	Lab test report + GCC
Proves child resistance?	No — only categorizes mechanism	Yes — proves the design works

The International Equivalent: ISO 8317

For brands selling internationally, ISO 8317 is the international testing standard equivalent to 16 CFR 1700.20. The test methodology is similar (child and adult panels), but the panel sizes, age ranges, and pass criteria differ slightly. If you export CR packaging to the EU, UK, Canada, or Australia, you may need ISO 8317 certification in addition to (or instead of) 16 CFR 1700.20.

Standard	Region	Child Panel Age	Panel Size	Pass Threshold
16 CFR 1700.20	United States	42–51 months	50–200	85% fail to open
ISO 8317	International (EU, UK, CAN, AUS)	42–51 months	200	85% fail to open
EN 14375	European Union	42–51 months	200	85% fail to open

How CR Mechanisms Actually Work

Macro close-up of three CR locking mechanisms — snap-fit pop-top hinge, dual side-push notched tab, and press-and-pull double-track zipper

All CR mechanisms share one engineering principle: they require two simultaneous, coordinated actions that children under five cannot perform together. Here is how each works:

Squeeze-to-Open (Pop-Top Tubes)

Two recessed flex zones on opposite sides of the tube require simultaneous inward compression (4–6 lbs lateral force) while lifting the hinged cap upward. Children lack the hand span and bilateral coordination to execute both actions simultaneously.

Used in: Child-resistant tubes for pre-rolls, blunts, and infused joints.

Dual Side-Push Buttons (Slide Boxes)

Two polypropylene or paperboard tabs on opposite sides of the outer sleeve latch into notched teeth on the inner tray. Pressing both buttons inward while pulling the tray outward requires three-point coordination — two lateral presses plus one longitudinal pull.

Used in: Child-resistant boxes for edibles, CR vape packaging for cartridges.

Press-and-Pull CR Zipper (Mylar Bags)

A double-track zipper with a slider tab requires pressing the slider downward into the interlock position before pulling it laterally along the track. The press-then-pull sequence defeats simple pulling or tearing attempts.

Used in: Child-resistant mylar bags for flower and gummies, CR pouches for edibles, CR exit bags for dispensary checkout.

Push-and-Twist (Tins)

The lid sits in a recessed channel and requires downward pressure against a spring while rotating 90°. The combined push-and-twist motion requires grip strength and rotational coordination that children cannot replicate.

Used in: Child-resistant tins for concentrates, topicals, and mints.

How to Verify Your Supplier's CR Claims

When evaluating a packaging supplier, ask for these three documents:

16 CFR 1700.20 Lab Test Report — the actual test results from an accredited lab, showing child panel failure rate (≥85%) and senior panel success rate (≥90%). If they cannot produce this, the packaging has NOT been tested.
General Certificate of Compliance (GCC) — the manufacturer's formal certification document listing the product, applicable regulation, test lab, and test date. Required under CPSIA.
ASTM D3475 Classification — the type number identifying the CR mechanism. Useful for internal records and regulatory filings, but NOT a substitute for the test report.

Red flags to watch for:

Supplier says "ASTM D3475 certified" but has no lab test report → NOT tested
Supplier provides only a classification number with no accompanying 16 CFR 1700.20 data → NOT tested
Test report references a different packaging design than what you are ordering → report does NOT apply
Test report is from a non-accredited lab → may not be accepted by state regulators

Frequently Asked Questions

Does ASTM D3475 certification mean my packaging is child-resistant?

No. ASTM D3475 is a classification standard, not a certification. It categorizes your packaging by mechanism type (Type I, Type IX, etc.) but does not test whether the mechanism actually prevents children from opening it. Legal child-resistant certification requires passing 16 CFR 1700.20 panel testing with live human subjects.

What ASTM D3475 type is a CR mylar bag?

Child-resistant mylar bags with press-and-pull zipper mechanisms are classified as flexible CR packaging under ASTM D3475. The specific type depends on the zipper mechanism — most CR mylar bags use a double-track slider zipper that falls under flexible packaging classifications. See our child-resistant mylar bags for ASTM-classified options.

How much does 16 CFR 1700.20 testing cost?

Professional protocol testing costs approximately $8,000 per packaging design. You must provide 400–500 production-quality sample units. The testing takes 4–8 weeks from sample submission to final report. Cubit manages the entire process and can certify custom designs under your brand name. See our CR certification guide for details.

Is ASTM D3475 required by any state?

No state legally requires ASTM D3475 classification. However, all states with legal cannabis require packaging to be child-resistant as tested under 16 CFR 1700.20 (or equivalent). ASTM D3475 classification is a useful reference that many state inspectors recognize, but it is not a compliance requirement.

What is the difference between ASTM D3475 and ISO 8317?

ASTM D3475 is a classification system (categorizes mechanism types). ISO 8317 is an international performance testing standard (tests whether the mechanism works) — similar to 16 CFR 1700.20 but used outside the United States. If you sell internationally, you may need ISO 8317 certification. If you sell in the US, you need 16 CFR 1700.20.

Can I self-classify my packaging under ASTM D3475?

Yes. ASTM D3475 classification is voluntary and self-assessed. You identify which mechanism type your packaging uses and reference the corresponding type number. No testing or third-party verification is required for classification. However, self-classification does NOT make your packaging legally child-resistant — you still need 16 CFR 1700.20 testing for that claim.

Next Steps

Need ASTM D3475 classified, 16 CFR 1700.20 certified child-resistant packaging? Browse our complete child-resistant packaging collection — including CR mylar bags, CR boxes, CR tubes, CR pouches, CR tins, and CR vape packaging. For custom designs requiring new CR testing, see our certification and lab testing guide or submit a quote through our RFQ portal.

ASTM D3475 Explained: Child-Resistant Packaging Testing & Certification (2026)