EN 343-2019 pdf 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 ol EN ISO 7854:1997, method C, and with the Idliowing 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 tuel and Z specimens shall ne 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: lsooctane (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 oltest agents: (50 ± 5) ml;
— test temperature: (20 ± 2) °C;
— duration of exposure: 60 mm.
After removal of the specimens from the test device, any test agent remaining on them shall be carefully removed with absorbent filter paper.
The test for resistance to water penetration shall be carried out directly after the removal of any test agent, and be initiated within 10 mm.
6 Test methods
6.1 Sampling
Specimens shall be taken from the garment or, if this is not possible, from the material or materials used in the finished garment. Size and shape shall be as required for each test procedure.
6.2 General requirements and innocuousness
6.2.1 General requirements
The general requirements shall be assessed by visual inspection and by hand.
6.2.2 Innocuousness
The innocuousness of the protective clothing shall be tested according to EN ISO 13688:2013,4.2.
6.3 Water penetration, WP
4 specimens of the waterproof material and 4 specimen with seams constructions in the middle of the specimen shall be tested in accordance with EN 20811:1992, Clause 7, but with an increase of water pressure of (980 ± SO) Pa/mm. The lowest single value in Pa on penetration of the IIrst water drop on the specimen shall be noted.
If due to the nature of the tested material the first drop is not visible, use an absorbent filter paper wipe gently test surface to indicate water being absorbed to the filter paper.
6.4 Water vapour resistance, Ret
3 specimens shall be tested in accordance with EN ISO 11092.
6.5 Tensile strength
Testing (e.g. of coated fabrics) shall be in accordance with EN ISO 1421:2005, Method 1. If there are difficulties such as separation of edge threads testing shall be carried out in accordance with the method as given in EN ISO 13934-1.
6.6 Tear resistance
Testing shall be in accordance with EN ISO 4674-1:2016, Method A. The testing speed of the moving jaw is (100 ± 10) mm/mm.
6.7 Bursting strength
Testing shall be in accordance with EN ISO 13938-1:1999, or EN ISO 13938-2:1999. The result as specified In the test standard shall be noted.
6.8 Dimensional change after cleaning
The requirements and testing procedures for dimensional change on materials shall comply with
EN ISO 13688:2013, 5.3.EN 343-2019 pdf download.