BS EN 343 pdf free download

BS EN 343-2019 pdf free download.Protective clothing – Protection against rain.
5 Pretreatment
5.1 General
The specimens used for testing resistance to water penetration shall be pretreated according to 5.2 to 5.5 except for materials intended for class 1.
5.2 Pretreatment by cleaning
Cleaning shall be in line with the manufacturer’s instructions on the basis of standardized processes.
If the number of cleaning cycles is not specified, the tests shall be carried out — in case of laundering after 5 laundering cycles (one laundering cycle consisting of one washing and one drying), or – in case of dry cleaning after 5 cycles of dry cleaning. This shall be reflected in the information supplied by the manufacturer.
If the manufacturer’s instructions indicate that both cleaning methods are allowed, the test specimen shall undergo the laundering procedure only.
NOTE Manufacturer’s instructions typically indicate one or several of the various methods and processes of EN ISO 6330, EN ISO 15797, ISO 3715 and a qualification label according to EN ISO 30023 or equivalent as standardized processes for cleaning.
5.3 Pretreatment by abrasion
4 specimens shall be submitted to pretreatment by abrasion. The pretreatment shall be carried out on the outer face of the outer shell material but with all materials of the clothing assembly combined with any applied waterproof layer.
Pretreatment is carried out except for outside coated shell material in accordance with EN 530:2010, Method 2, with the following specifications:
— abradant and glass cloth with abrasive grain in accordance with EN 388;
— pressure to the specimen: (9 ± 0,2) kPa;
— number of cycles: 1 000; remove debris after 500 cycles;
— abradant replacement after each pretreatment.
For outside coated shell material pretreatment shall be carried out in accordance with EN ISO 12947-1 and —2, with the following specifications and modifications:
— abradant: standard woollen cloth in accordance with EN ISO 12947-1;
— the abradant is mounted in the upper sample holder; the specimen to be tested is mounted in the lower (larger) sample holder;
— pressure to the specimen: (9 ± 0,2) kPa;
— number of cycles: 25 000; remove debris after 10 000 cycles;
— abradant shall be replaced after each pretreatment.
5.4 Pretreatment by repeated flexing
Pretreatment is carried out on the lines of EN ISO 7854:1997, method C, and with the following deviations:
— 2 specimens shall be tested in longitudinal direction;
— 2 specimens shall be tested in cross direction;
— number of cycles shall be 9 000.
5.5 Pretreatment with fuel and oil
2 specimens shall be submitted to pretreatment with fuel and 2 specimens shall be submitted to
pretreatment with oil in accordance with ISO 1817. The specimens consisting of the outer shell material
combined with any applied waterproof layer shall be arranged in the test device (see Figure B.1) in such
a way that the surface to be tested faces upwards and is in direct contact with the test agent.
The test vessels shall be made of materials that are resistant to the test agent.
They shall be tight enough, when closed, to prevent diffusion to ambient atmosphere.
Test agents:
1) Liquid A: Isooctane (2,2,4-trimethylpentane), percentage by volume 100%; in accordance with ISO 1817;
2) Liquid F: Test oil: straight-chain paraffins (C12 to C18), 80% by volume and 1-methylnaphthalene,
20 % by volume in accordance with ISO 1817;
— quantity of test agents: (50 ± 5) ml;
— test temperature: (20 ± 2) °C;BS EN 343 pdf download.