In the description of the test procedure for headlamp washers / headlamp wiper systems ECE R45 in Annex 4 the test dirt is specified which simulates the real dirt. The test dirt is used for headlamps with an outer lens made of glass and polymer.
Composition
The composition of the test dirt is as follows: 9 parts quartz sand between 0 µm and 100 µm 5 parts sodium chloride 1 part beech wood coal 0.2 parts carboxymethylcellulose
Transport and Storage
Partial segregation may occur during transport and storage. It is therefore recommended to homogenize the DMT Test Dirt ECE R45 before use, which can be achieved by mixing with a laboratory tumbler mixer. Please store in a dry and airtight original container.
Quality ensurance
In order to achieve reproducible quality, the raw materials and production are strictly controlled. The following quality controls are carried out:
Monitoring the particle size distribution of raw materials Monitoring the particle size distribution of the end product
Related links to "DMT Test dirt ECE R45 Annex 4 2.1.1 + 2.1.2"
