Repeatable Coconut-Wax Candle Testing Protocol

Treat each wax, wick, vessel, fragrance, load, cure, and process combination as its own test series. Record every burn cycle and change only one controlled variable at a time; stop for unsafe behavior; and do not move a formula into production until a production-matched candle repeats the expected behavior through the full planned series.

Use this guide when

Use this guide to design, run, investigate, and repeat container-candle burn tests—not to obtain a universal wick, temperature limit, fragrance load, or safety certification.

Materials or documents needed

Wax, fragrance, wick, vessel, dye/additive, and adhesive supplier records with lot numbers
Vessel inside diameter, height, wall/base characteristics, and fill weight
Formula, pour process, cure time, and ambient-condition record
Warning-label and fire-safety instructions applicable to the product and market
Burn-cycle log, photos, component-change log, decision, and production-match checklist

Task-specific steps

Assign a test-series ID and record every component, supplier, lot, dimension, weight, process setting, and cure time.
Define the controlled variable and hold all other documented inputs constant.
Prepare the attended test area, observation interval, stop conditions, photo positions, and measurement method before lighting.
For each cycle record start/end time, ambient conditions, wick trim, flame behavior, melt-pool width/depth, vessel temperature at a named location, soot, mushrooming, tunneling, residue, and visible vessel changes.
Stop and document unsafe or abnormal behavior instead of modifying the burning candle to rescue the test.
At the end of each cycle record the decision: continue unchanged, stop, or create a new series with one stated change.
Investigate failures by comparing the changed variable with prior controlled records; do not infer a universal fix from one candle.
Before production, make a production-matched sample from actual components and lots and repeat the required verification series.

Component-change log

New series	Changed variable	Held constant	Reason
C-18	Wick W-3 → W-2	Wax lot, vessel, fragrance lot/load, process, cure	Investigate high flame and soot in C-17

Production-match checklist

Same approved wax, wick, vessel, fragrance, dye/additive, and adhesive specifications
Actual production lots recorded
Fill weight, process, cure, wick trim, and label match the tested setup
No undocumented component substitution
Production sample completes the required verification series
Batch record links to the test-series decision

Worked example

A high, sooting flame leads to a new wick-only series

Situation: Series C-17 uses one coconut-wax lot, one 76 mm vessel, one fragrance lot at the documented load, and wick W-3 after the planned cure. The first two cycles are recorded under similar room conditions.

Work: During cycle two the flame becomes larger than the maker’s documented baseline and produces visible soot. The maker stops under the test procedure, records time, wick trim, melt pool, vessel reading location, soot, and photos. The candle is not relit after an improvised trim to create a passing record.

Decision: Series C-17 is failed. Series C-18 changes only the wick to W-2 and repeats the full planned process. If wax, fragrance, vessel, additive, lot, or process also changes, it receives a separate series ID.

Worksheet

Open the Candle Burn-Test Series Worksheet

Use this worksheet to record complete candle test series, individual burn cycles, controlled component changes, and production-match decisions. It supports editable rows, required-field checks, local browser autosave, print output, and CSV or JSON export; entries stay in this browser unless you export or otherwise share them.

Common mistakes

Changing wick and fragrance load in the same follow-up
Recording only the first burn or the best-looking cycle
Using an infrared reading without recording location, method, or device
Inventing a universal pass temperature or melt-pool measurement
Assuming a supplier wick chart replaces testing in the exact vessel and formula

Sources

Citations for Repeatable Coconut-Wax Candle Testing Protocol identify the exact fact or section supported and each source’s limits. Product-specific records you must collect are listed under Materials or documents needed.

1. Safety with candles

National Fire Protection Association · nfpa.org

Open the exact source

Published or revised: Living safety page
Date checked: 2026-07-12
Recheck when: Recheck before a material page revision, after a publisher or regulator change notice, or by 2027-01-12, whichever comes first.
Supports: Basic fire-safety boundaries such as attended burning, stable placement, and separation from combustible materials.
Does not establish: A passing formula, wick size, vessel-temperature limit, fragrance load, or certification for a candle.

2. Candle Fire Safety

U.S. Consumer Product Safety Commission · cpsc.gov

Open the exact source

Published or revised: Publication 5032
Date checked: 2026-08-15
Recheck when: Recheck before a material revision, after an issuer change, a broken redirect, or by 2027-02-12, whichever comes first.
Supports: Consumer candle-fire precautions and the need to treat candle burning as a fire-safety activity.
Does not establish: A complete manufacturer test protocol or universal pass/fail dimensions and temperatures.

Last reviewed

Published by Marc LaClear. Responsible editor: Marc LaClear.

Editorial review only; no named professional review is claimed.

Last reviewed: 2026-07-12

Revision notes: Added repeatable burn-cycle records, component-change controls, failure investigation, production-match checks, and fire-safety stop conditions.