Document ID: chunk:federal_register_of_legislation:F2023C00228:front:0:p95
Version: federal_register_of_legislation:F2023C00228
Segment Type: other
Provision Reference: 
Character Range: 256675–259574

No                       Flux transmitted by the new material in a field of 24 degrees C
         (before test)
T3       Yes            No                       Flux transmitted by the tested material in a field of 24 degrees C
         (after test)
T4       Yes            Yes                      Flux diffused by the new material
         (before test)
T5       Yes            Yes                      Flux diffused by the tested material
         (after test)

       Annex 6 - Appendix 3

       SPRAY TESTING METHOD

       1. Test equipment

       1.1. Spray gun

       The spray gun used shall be equipped with a nozzle 1.3mm in diameter allowing a liquid flow rate of 0.24 +/- 0.02 1/minutes at an operating pressure of 6.0 bars -0, +0.5 bar. Under these operation conditions, the fan pattern obtained shall be 170mm +/- 50mm in diameter on the surface exposed to deterioration, at a distance of 380mm +/- 10mm from the nozzle.

       1.2. Test mixture

       The test mixture shall be composed of:

       Silica sand of hardness 7 on the Mohr scale, with a grain size between 0 and 0.2mm and an almost normal distribution, with an angular factor of 1.8 to 2;

       Water of hardness not exceeding 205g/m3 for a mixture comprising 25g of sand per litre of water.

       2. Test

       The outer surface of the lamp lenses shall be subjected once or more than once to the action of the sand jet produced as described above. The jet shall be sprayed almost perpendicular to the surface to be tested.

       The deterioration shall be checked by means of one or more samples of glass placed as a reference near the lenses to be tested. The mixture shall be sprayed until the variation in the diffusion of light on the sample or samples measured by the method described in Appendix 2, is such that:

       Several reference samples may be used to check that the whole surface to be tested has deteriorated homogeneously.

       Annex 6 - Appendix 4

       ADHESIVE TAPE ADHERENCE TEST

       1. PURPOSE

       This method allows to determine under standard conditions the linear force of adhesion of an adhesive tape to a glass plate.

       2. PRINCIPLE

       Measurement of the force necessary to unstick an adhesive tape from a glass plate at an angle of 90 degrees.

       3. SPECIFIED ATMOSPHERIC CONDITIONS

       The ambient conditions shall be at 23 degrees +/- 5 degrees C and 65 +/- 15% relative humidity (RH).

       4. TEST PIECES

       Before the test, the sample roll of adhesive tape shall be conditioned for 24 hours in the specified atmosphere (see paragraph 3 above).

       Five test pieces, each 400mm, long shall be tested from each roll. These test pieces shall be taken from the roll after the first three turns were discarded.

       5. PROCEDURE

       The test shall be under the ambient conditions specified in paragraph 3.

       Take the