Home>BS standards>BS EN ISO 26987:2012 pdf download

BS EN ISO 26987:2012 pdf download

BS EN ISO 26987:2012 pdf download.Resilient floor coverings – Determination of staining and resistance to chemicals.
Take a representative sample from the available floor covering material. The sample should be obtained from a new roll or carton and should not have been treated with any floor finish/polish.
Take one test piece in each colour to be tested with a surface area of at least 3 000 mm2. for each of the chemical substances to be tested. If the test uses a chemical substance likely to cause swelling or deformation of the test piece, e.g. prolonged contact with the solvent, bond the test piece to a fibre-cement board at least 5 days before testing.
Identify the test pieces corresponding to each of the substances tested, either by marking numbers on the test piece (using a marking which is not affected by the material used in the test), or by a sketch, diagram or photograph.
5 Atmosphere for conditioning and testing
Condibon the test pieces at a temperature of (23 ± 2) C and a relative humidity of (50 ± 5) % for a minimum of 24 h. Maintain this condition when carrying out the test.
6 Test procedure
6.1 Application of liquid substances
6.1.1 Using a clean pipette (3.1.1), pour a small quantity of the liquid chemical substance to test (see 3.2) into the centre of the marked position of the test piece. Apply the convex face of a watch glass (3.1.2) to the liquid and remove it immediately. If the diameter of the splash of the liquid chemical substance is more than 15 mm, apply the watch glass again. Leave it in position this time, in such a way as to produce a splash of liquid chemical substance covering an area of 300 mm2 to 400 mm2.
6.1.2 If the diameter of the chemical substance does not exceed 15 mm, add a few more drops and spread it again by applying the watch glass. Leave it in position this time, in such a way as to produce a splash of the liquid chemical substance of 300 mm2 to 400 mm2.
6.2 Application of paste substances
With a spatula (3.1.3), spread about 1 000 mm3 of the paste chemical substance to test (see 3.2) over an area of 300 mm2 to 400 mm2 (i.e. thickness 2,5 mm to 3 mm).
6.3 Duration of contact
The main duration of contact shall be 2 h with the evaluation of the sample being done within 5 mm of removing the chemical substance. After cleaning and observation if the test piece has been adversely affected (staining, dulling, softening, swelling, etc.), a new test shall be conducted for a period of 30 mm.BS EN ISO 26987 pdf download.

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