BS EN 15426:2018 pdf download

BS EN 15426:2018 pdf download

BS EN 15426:2018 pdf download.Candles – Specification for sooting behaviour
1 Scope
This document specifies requirements and the test method for evaluating the sooting behaviour of burning indoor candles. It is applicable to single wick candles with a diameter up to 100 mm or equivalent cross sectional area intended to be burned indoors.
NOTE Single wick candles with a diameter above 100 mm or equivalent cross sectional area and multiwick candles cannot be evaluated with this test method for technical reasons. Evaluation of the visible release of soot is a possibility for these candles.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 9044:2016, Industrial woven wire cloth 一Technical requirements and tests
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
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●ISO Online browsing platform: available at http:/ /
3.1 base material
intended fuel source for a candle flame
7 Sample preparation
Remove any outer wrapping and label material and prepare the sample for use according to the manufacturer’s instructions if any given, e.g. trim the wick. For identification of the sample, measure the dimensions and mass of the candle. The temperature of the sample shall be (20 + 5) °C before the test is started.
8 General test conditions
The room temperature at which the burning test is to take place shall be (20+5) °C. The room shall be draught free. If during the test the temperature is outside the range, the maximum and/or minimum temperature shall be recorded in the test report. For testing floating candles, the temperature of the water shall be (20+5) °C when the test is started. NOTE Draught free means that a candle can burn without noticeable disturbance of the flame. If the flame is flickering this can be verified using a reference candle such as a paraffin candle with a diameter of 22 mm. If this reference candle is also flickering there is a draught, if not then the tested candle is flickering due to the candle design or quality.
9.2 Test preparation
The wire mesh cylinder type shall be selected according to Table 1. The diameter of the candle is measured at the largest cross-section at any point from 50 mm below the bottom of the cylinder to the top of the candle when the candle is placed in correct position for the test, as the air exchange within the cylinder would otherwise be hindered. For non-circular candles the cylinder is selected based on the same cross-section as for the diameter of a circular candle, see Annex C.