ASTM F2417: Candle Fire Safety Testing Explained

ASTM F2417 is the standard that looks at the candle itself, not the label. ASTM's store lists the current edition as F2417-26, "Standard Specification for Fire Safety for Candles." Its scope says it is "intended to prescribe minimum safety requirements for candles and candle ensembles." CPSC lists it as a voluntary standard, and I found no federal rule that makes you follow it. I am a candle maker, not a lawyer, and I could not open the paid text, so what follows comes from ASTM's store page and other summaries.

What does F2417 cover?

The National Candle Association (NCA) says F2417, in effect since 2004, "establishes maximum flame height, tip-over limits, secondary-ignition proscriptions, and end-of-useful life specifications." The NCA adds that its own descriptions are "a generalized summary" and do not provide the actual specifications. In plain words:

• Flame height. The flame can only get so tall.
• Tip-over. There are limits on tipping over.
• Secondary ignition. The NCA lists it. I could not open the standard's exact wording, so I will not guess what it asks.
• End of useful life. There are limits for the end of a candle's life too.

The ASTM page also says the standard is not a replacement for other safe practices, such as adult supervision and keeping candles away from things that burn.

Is it a law?

No. CPSC lists F2417 among six "industry consensus standards (also known as voluntary standards)" on its candle business page. What that page does make mandatory is separate. The metal core of a metal-cored wick can hold no more than 0.06 percent lead by weight, under 16 CFR 1500.17(a)(13), and makers of those candles must issue a certificate. A candle that contains a hazardous substance under the Federal Hazardous Substances Act must bear cautionary labeling. Ask the shops, marketplaces and insurers you work with whether they want to see test results.

Which edition is current?

ASTM's store listed F2417-26 as active on November 4, 2026, priced at $80.00. Editions change, and so do prices, so check the page. Bureau Veritas wrote about the 2023 revision. It says safety requirements were added for wick migration and wick leaning, a definition and an appendix for candle-making kits were added, and the appendix on the end of a candle's useful life was rewritten. It says most tests did not change. ASTM also lists an F2417-24, so that note is two editions old. I did not find a page that lists what changed in 2024 or 2026.

What do the tests look like?

I could not confirm test details from the standard. One candle maker, Armatage, describes a burn test it bases on F2417-17:

• Each candle gets about 7 7/8 inches (20 cm) of space around it.
• The room is 68 to 86 degrees F (20 to 30 C).
• The wick is trimmed to 1/4 inch (6 mm) each time.
• Each candle is burned in four hour increments until a failure condition occurs, then cooled. Gel candles get 8 hour periods, and tealights burn once.
• Armatage checks every hour for flame height, tipping or spilling, damage to the surface and heavy smoke.
• It quotes the maximum flame height as under 3 inches (7.6 cm), or 3 3/4 inches (9.5 cm) for candles meant for religious use.

Armatage also lists a jar temperature of 140 degrees F and carbon balls over 3/16 inch (5 mm) as fail points, and says F2417-17 does not mention those. They are Armatage's own extra checks. Use its numbers to understand the idea, and use the current standard for the real limits.

Worked example: reading a flame height

These readings are made-up examples from one test candle. The limit is Armatage's quoted 3 inches (3 x 25.4 = 76.2 mm), not a number I read in the standard.

The candle passes the first three checks and goes over at hour four, so by that figure it fails. Trimming is part of the fix, but the answer may also be a smaller wick. Our flame-too-big guide covers causes. Stay in the room for the whole burn, not just for each reading. Never leave a burning candle out of sight during a test.

Note what the example does not show. Passing flame height tells you nothing about tip-over or secondary ignition. Those are separate checks in the standard, and you would need its text for the method.

Do I need F2417 to sell candles?

CPSC calls it voluntary. That does not mean a test is wasted. A test in your own jar with your own wick and wax tells you what your candle does, which a supplier's chart cannot. Keep the results with the recipe.

Common mistakes

• Mixing up F2417 with F2058. One is the candle, the other is the label.
• Trusting a supplier's "ASTM tested" line for your candle. A different wax, oil, dye or jar can change the result.
• Testing once and never again after a recipe change.
• Using a blog's numbers instead of the current edition.
• Burning out of sight during a test.

Questions

Is F2417 the same as a burn test?

A burn test is how a maker checks a candle. F2417 is the standard that sets what the candle should do. Our burn test guide shows the steps.

Do I need to buy the standard?

To follow the exact method and limits, yes. ASTM's store page is where to buy it.

Does passing F2417 make my label compliant?

No. Labels fall under F2058, a separate standard. Our F2058 guide covers it.