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p-cold-throw-panel

P-01 blind cold-throw panel

2026-08-19 · By The Candle Bench · Repeats 4×

How the cold and hot throw ratings in every burn record are produced. Five panellists, unlabelled jars, a fixed sniff order and a five-point scale with written anchors. The rating is the trimmed mean, and the panel never sees the wax code.

MethodFive-panellist blind sniff panel, trimmed mean of five scoresRepeats4×equip4Quantities produced3Environment control21 C, 45 %RH, ventilated 20 min between sample sets, no other fragrance in the room

Procedure

  1. 01

    Condition every sample at 21 C for 24 h in a lidded jar of the same size. Unlabelled, coded on the base only.

  2. 02

    Cold throw first: open one jar at a time, sniff at 150 mm, close it, and score before the next jar is opened. No more than 20 seconds per sample.

  3. 03

    Hot throw second: light each candle for 60 minutes in the same room in the same order, one at a time, and score at the 60-minute mark from the far side of the room.

  4. 04

    Record both scores per panellist. Discard the highest and lowest for each sample and average the remaining three to one decimal.

  5. 05

    Rest the panel for fifteen minutes between sample sets and re-read the anchor definitions aloud before restarting.

Scent throw is the softest number on this site and the easiest to fake. The procedure below is what keeps it comparable: unlabelled vessels, a fixed order, and a scale whose anchor points are written down before the first jar is opened rather than after the last.

The scale runs 1 to 5: 1 is detectable only with the nose inside the vessel; 3 is detectable at arm's length; 5 fills the room within a minute of lighting. A score below 3 on the hot throw is reported as low rather than omitted, because a low number is data.

Panellists per sample每样品评审人数
Sniff distance, cold冷香嗅闻距离
Lit duration before scoring评分前点燃时长

Instruments used

  • Identical lidded glass jars, 120 ml12 jars
  • Sample coding labels, base onlyrandom 3-digit codes
  • Interval timer, 0.1 sno brand
  • Written anchor sheet, laminatedre-read before every set

Sampling table

Samples per set 6
Sniffers per sample 5
Sets per session 2

Quantities produced

  • Cold throw, 1-5scored before lighting
  • Hot throw, 1-5scored at 60 minutes lit
  • Panel agreement, SDreported when above 1.0

Environment: 21 C, 45 %RH, ventilated 20 min between sample sets, no other fragrance in the room

Protocols cited