# The Aerosol Dispensers Regulations 2009, Paragraph 6.3.2.3.2: Test procedure


(a) a minimum of 3 full aerosol dispensers per product shall be conditioned to 20 °C ± 1 °C in a water bath with at least 95 % of the dispenser immersed in the water for at least 30 min (if the aerosol is fully immersed, 30 min conditioning is sufficient);
(b) measure or calculate the actual volume of the drum in dm3;
(c) comply with general requirements; record the temperature and relative humidity of the environment;
(d) determine the internal pressure and initial discharge rate at 20 °C ± 1 °C (to eliminate faulty or partly filled aerosol dispensers);
(e) weigh one of the aerosol dispensers and note its mass;
(f) light the candle and apply the closure system (cover or plastic film);
(g) place the aerosol dispenser actuator orifice 35 mm or closer for a wide spray product, from the centre of the entrance hole in the drum; start the chronometer (stopwatch) and following the instructions for use of the product; direct the spray towards the centre of the opposite extremity (cover or plastic film); the aerosol shall be tested in the position it is designed to be used, e.g. upright or inverted;
(h) spray until ignition occurs; stop the chronometer and note the time elapsed; re-weigh the aerosol dispenser and note its mass;
(i) ventilate and clean the drum removing any residue likely to affect subsequent tests; allow the drum to cool if necessary;
(j) repeat the test procedure steps (d) to (i) for another two aerosol dispensers of the same product (three in total, note: each dispenser is only tested once).

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Source: https://www.legislation.gov.uk/uksi/2009/2824/schedule/1A/paragraph/6.3.2.3.2 (the official version)
Page: https://openlegislation.uk/aerosol-dispensers-regulations-2009/schedule-1A/paragraph-6.3.2.3.2
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.