SNCF STM-N-812 Protection vis a vis des Graffiti procedures D’essais et methodes（Anti-graffiti protection） 法國國營鐵路公司STM-N-812 防護塗鴉試驗程式和方法
SNCF STM-N-812 The purpose of this test is to classify materials (excluding textiles) in terms of their resistance to graffiti. Two tests are described in the standard: The aggressiveness test and the effectiveness test.
Several types of graffiti may be used. These products are listed by SNCF(i.e. ink, paint and permanent marker). Several removal products are also available depending on the use of the graffitied material. The sample of the test material is marked then cleaned several times. The test material is given a classification according to the aggressiveness of the removal product required to remove the graffito.
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