BS/EN 71-3-2019 pdf download.Safety of toys Part 3 : Migration of certain elements.
NOTE No sampling procedure for inaccessible toy materials or glass, ceramic and metallic toy components which do not fit within the small parts cylinder is specified as they are not within the scope of this European Standard. The exposure to certain elements from inaccessible materials and larger hard components, which cannot he swallowed, is not considered significant.
I ía test portion of 0.1 g or more cannot be obtained, a test portion shall be obtained from each toy material
present in the sample in a mass greater than 0.010 g. If the weight of the test portion obtained is between
0.010 g and 0,100 g, this shall be indicated in the report (see Clause 12 h)). In this case the analytical
results shall be calculated as though 0,100 g of the test portion had been used (Wtp = 0,100 g, see H.5).
7.2.3 Dewaxing (see H.1 1)
7.2.3.1 General
If there are indications that the test portion contains grease. oil, wax or similar material dewax the test portion according to 7.2.3.2.
Category Ii test portions which can be dispersed in 0,07 mol/l HCL shall not be dewaxed.
De-waxing shall not be carried out on test portions prepared for organic tin analysis.
NOTE There are certain sample types known to contain grease, oil, wax or similar material. See 11.11 for more
information on which samples contain wax and, consequently, would need to be dewaxed.
7.2.3.2 Dewaxing procedure
Use a high-retention filter paper (see 6.2.5) which should be as small as possible without risking loss of the test portion during the de-waxing procedure. Weigh the test portion, to the nearest 0,00 1 g, onto the (liter paper (Wtp). Use this mass of the test portion for the calculation of the results of the Lest. For category II samples containing grease, oil, wax or similar material, dry the test portion at (37 ± 2) °C for approximately 4 h. Fold the filter paper carefully to enclose the test portion without loss. Put the filter paper into the thimble of a Soxhlet extractor. Add an amount of isooctane appropriate for the equipment into the boiling flask of the extractor and extract for at least 60 mm with no less than 10 reflux cycles per hour. If after 60 mm there are indications of residual grease, oil, wax or similar material continue the extraction as necessary.
After extraction, dry the folded filter paper containing the dewaxed test portion at (80 ± 2) °C for approximately 1 h to remove the residual solvent. Weigh the dried filter paper parcel, to the nearest 0,001 g (Wfp). Use Wip to calculate the volume of water and 0,14 mol/l HCI used in the migration procedure (see 8.1.2.1. samples containing grease, oil, wax or similar material).
The use of a dewaxing step shall be reported (see Clause 12 h)).
For the purposes of the following subclauses the density of the water and hydrochloric acid solution can be assumed to be 1,0 g/mI and the solutions can be added volumetrically using suitable dispensers accurate to the nearest 0,05 ml.
The volume of simulant (V) added shall be recorded for the purpose of calculation of results.
8.1.2 Category I: Dry, brittle, powder like or pliable materials and Category II: Liquid or sticky
materials
8.1.2.1 Samples containing grease, oil, wax or similar material
After dewaxing (see 7.2.3). weigh to the nearest 0.05 g Wfp 25 of water at (22 ± 3) °C into the appropriate sized container (see 6.2.4) containing the filter paper parcel.
Using a suitable mechanical means (e.g. a glass rod, a pestle or similar implement) homogenize the filter paper containing the dewaxed test portion in the water.
Add to the nearest 0,05 g Wfp x 25 of 0,14 mol/l hydrochloric acid solution (sec 6.1.2) at (22 ± 3) °C and mix.
Proceed without any delay with the appropriate pH adjustment procedure specified in 8.2 (pH adjustment).
8.1.2.2 Samples not containing grease, oil, wax or similar material
Weigh the test portion to the nearest 0,001 g (Wtp) into the appropriate sized container (see 6.2.4). Add to the nearest 0,05 gWtp x 50 of an aqueous solution of 0.07 molfl HCI (see 6.1.1) at (22 ± 3) °C.
For test portions of mass between 0.010 g and 0.100 g. add 5,0 ml of 0,07 mol/l HCI (see 6.1.1) at (22 ± 3) DC.
Proceed without any delay with the appropriate pH adjustment procedure specified in 8.2 (pH adjustment).
8.1.3 Category Ill: Scraped-off materials
8.1.3.1 Glass, ceramic and metallic materials
Weigh the toy or component to the nearest 0.001 g (Wtp) into a 50 ml container with nominal height
60 mm and nominal diameter 40 mm.
Add sufficient amount of an aqueous solution of 0,07 mol/l HCI (see 6.1.1) at (22 ± 3) °C to just cover the toy or component
NOTE This size of container can contain components/toys that fit inside the small parts cylinder.BS/EN 71-3-2019 pdf download.
BS/EN 71-3-2019 pdf download
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