BS 343:2019 pdf download – Protective clothing – Protection against rain
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.
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 (C 12 to C 18 ), 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;
— duration of exposure: 60 min.
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 min.
6 Test methods
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.
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 ± 50) Pa/min. The lowest single value in Pa on penetration of the first 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, R et
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/min.
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.BS 343 pdf download.