BS EN 15426:2018 pdf free

BS EN 15426:2018 pdf free.Candles – Specification for sooting behaviour.
The test shalt be carried out on finished candles representative of those intended to be supplied commercially. For the test result to represent a specific candle type, a minimum of three samples shall be tested.
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 shalt be recorded in the test report.
For testing floating candles, the temperature of the water shall he (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 Test method
9.1 General
In the case of candle designs not catered for in the test procedures, the test should be carried out as far as possible as described and deviations from the test procedure shall be recorded in the test report.
If sooting becomes excessive the measuring may be stopped early.
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.BS EN 15426 pdf free download.