BS/EN 13832-1-2018 pdf download.Footwear protecting against chemicals Part 1 : Terminology and test methods.
c) Store the footwear for at least 24 h in an environment at (23 ± 2) °C and (50 ± 5) %rh. The test shall performed between (20 and 25) °C.
d) Fill the footwear with absorbent paper as a trace medium for liquid ingress. Ensure the paper is in contact with the seams of the footwear at the front, bellows and lacing in particular.
e) Fasten the footwear.
fl Prepare a minimum of 130 ml of the chosen test chemical.
If several chemicals have to be chosen, it Is necessary to use a new pair ol toorwear ror each chemical.
g) Place the footwear into a tray of a sufficient size (30 ± 1cm large 40 ± 1cm long 5 ± 1 cm high) to allow residual liquid to drain from around the footwear during application. The material constituting the tray shall not be affected by the test chemical. Any accidental spillage during application into the inner of the footwear shall be prevented.
h) Pour 60 ± 6 ml of test liquid evenly across the two sides and front of the footwear using a (20 ± 2) ml containers.
Note 1 to entry: It has been found that using smaller containers each holding (20 ± 2) ml of the test liquid per side and across the centre front makes application more consistent.
The footwear shall have an angle of (45 ± 10) degrees when pouring chemicals onto the side sections. Using the 20 ml container, move along the drawn line and wet the test area of the sample. The pouring distance shall be between 4 cm and 6 cm (see Figure 2). Leave any spilled volume In the tray in contact with the outsole until the first examination is completed.
m) 1 h (±2 mm) after pouring the chemical, carry out a visual inspection of the two footwear, comparing it to an original (or photographs) and note any damage or visual change as defined in Annex B (for example, surface marking or damage, damage to components, lack of functionality). Check the area under any lacing or fastenings where spilt liquid might be trapped and not easily visible. The test sample shall be cut open to assess any internal damage or wetness.
n) 24 h (±30 mm) after pouring the chemical, carry out a second visual inspection of the two footwear, comparing it to an original (or photographs) and note any damage or visual change as defined in Annex B.
4.2.3 Test report
The test report shall include the following information:
a) the number of this European Standard. i.e. EN 13832-1:2018, 4.2;
b) a full description of the sample and its origin;
c) a full description of the chemicals used in the splashing test;
d) the appearance of the test piece after the splashing tests (e.g. cracking, delamination) after 10 mine 1 h after the test and 24h after the test;
e) any penetration of chemical inside the footwear;
f) any trapped chemical in the footwear (Inside or outside);
g) any deviation from test methods.
4.3 Degradation test
4.3.1 Principle
Some basic physical properties of the footwear component (upper and outsole) are checked before and after contact with chemicals.
4.3.2 Apparatus
4.3.2.1 Degradation cell. The apparatus shall be suitable for holding the test piece. A suitable apparatus is illustrated in Figure 3 and comprises a base-plate (5) and an open-ended cylindrical cell (4) that is held tightly against the test piece (6) by the wing nuts (1) mounted on the bolts (2).
For the upper, except for the necessary handling during preparation, the surface in contact with the chemical shall be tested without any mechanical treatment.
For class 1 footwear (EN ISO 20345:2011, EN ISO 20346:2014 and EN ISO 20347, Clause 4), only the external component that will be in contact with the chemical, is tested. Lining, foam shall be removed.
For class II footwear (EN ISO 20345:2011, EN ISO 20346:20 14 and EN ISO 20347, Clause 4),
— lithe lining can be removed easily from the upper without damaging it, the test shall be done on the outer polymer alone;
— if the lining cannot be removed from the upper without damaging it, the test shall be done on the complete upper.
Both test pieces will be prepared (test before and after degradation). The test pieces shall be marked to guaranty that the tests (before and alter degradation) will done in the same direction.
NOTE This marking will avoid difference in results coming from the different properties of the lining (warp and welt or along and across)
4.3.3.2 Preparation of the outsole
A disc of diameter (120 ± 10) mm shall be taken from the fore part of the outsole, see Figure 4. Discs with a thickness between 1,8 and 2,5 mm shall be prepared according to the following steps:
a) Remove the outsole tread by splitting and abrading if necessary.
b) Obtain the outsole polymer sample of thickness between 1,8 mm and 2,5 mm by splitting.
If It is impossible to take the sample from the outsole, it may be taken from a material sheet representative of the outsole, the thickness shall be the same as the outer layer of the outsole.
NOTE It Is easier to use footwear of larger size to get the 120 mm diameter sample.BS/EN 13832-1-2018 pdf download.