Test mixture. For headlamp with the outside lens in glass: The mixture of water and a polluting agent to be applied to the headlamp shall be composed of: 9 parts by weight of silica sand with a particle size of 0-100 µm, 1 part by weight of vegetal carbon dust (beechwood) with a particle size of 0-100 µm, 0.2 parts by weight of NaCMC 3/, and an appropriate quantity of distilled water, with a conductivity of ≤ 1 mS/m. The mixture must not be more than 14 days old.
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Sources: Agreement Concerning the Adoption of Uniform Technical Prescriptions for Wheeled Vehicles, Agreement Concerning the Adoption of Uniform Technical Prescriptions for Wheeled Vehicles
Test mixture. For headlamp with the outside lens in glass: The mixture of water and a polluting agent to be applied to the headlamp shall be composed of: 9 parts by weight of silica sand with a particle size of 0-100 µmμm, 1 part by weight of vegetal carbon dust (beechwood) produced from beech wood with a particle size of 0-100 µmμm, 0.2 parts by weight of NaCMC 3/NaCMC4, and 5 parts by weight of sodium chloride (pure at 99 per cent), an appropriate quantity of distilled water, with a conductivity of ≤ 1 mSμS/m. The mixture must shall not be more than 14 days old.
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