Document ID: chunk:federal_register_of_legislation:F2015C00542:reg:1:p6
Version: federal_register_of_legislation:F2015C00542
Segment Type: reg
Provision Reference: reg 1 (pt 6/43)
Character Range: 162188–164962

the burn rate does not exceed 110 mm/min.
11. Test of resistance to chemicals
11.1. Chemicals used for the test
11.1.1. Non-abrasive soap solution: 1 per cent by weight of potassium oleate in deionised water;
11.1.2. Window-cleaning-solution: an aqueous solution of isopropanol and dipropylene glycol monomethyl ether in concentration between 5 and 10 per cent by weight each and ammonium hydroxide in concentration between 1 and 5 per cent by weight;
11.1.3. Undiluted denatured alcohol: 1 part by volume methyl alcohol in 10 parts by volume ethyl alcohol;
11.1.4. Petrol or equivalent reference petrol: a mixture of 50 per cent by volume toluene, 30 per cent by volume 2,2,4-trimethylpentane, 15 per cent by volume 2,4,4-trimethyl-1-pentene and 5 per cent by volume ethyl alcohol:
 N.B. The composition of the petrol used shall be recorded in the test report;
11.1.5. Reference kerosene: a mixture of 50 per cent by volume n-octane and 50 per cent by volume n-decane.

11.2. Test method
       11.2.1. Immersion test

 Four samples 180 mm x 25 mm shall be tested for each test and each chemical specified in paragraph 11.1. above, using a new test piece for each test and each cleaning product.
 Before each test, samples shall be cleaned according to the manufacturer's instructions, then conditioned for 48 hours at a temperature of 23 °C ± 2 °C and a relative humidity of 50 ± 5 per cent. These conditions shall be maintained throughout the tests.
 The samples shall be completely immersed in the test fluid and held for one minute, then removed and immediately wiped dry with a clean absorbent cotton cloth.
11.2.2. Indices of difficulty of the secondary characteristics
                                                        Colourless  Tinted
Colouring of the interlayer or of the plastics coating  2           2

 The other secondary characteristics are not concerned.
11.2.3. Interpretation of results
11.2.3.1. The test for resistance to chemical agents shall be considered to have given a satisfactory result if the sample does not exhibit any softening, tackiness, crazing or apparent loss of transparency.
11.2.3.2. A set of samples shall be considered satisfactory with regard to the test for resistance to chemical agents if at least three of the four tests carried out with each chemical have given a satisfactory result.
11.2.4. Test procedure under load
11.2.4.1. The sample shall be simply supported as a horizontal level arm between a fixed supporting edge at one end in such a way that the entire width will rest on a cutting edge (fulcrum) which is 51 mm from the fixed end support. A load shall be suspended from the free end of the test specimen at a distance of 102 mm from the fulcrum as shown in Figure 21 below:

Figure 21

Method of setting up