The technical arranging concentration (TRK value) indicates the concentration of a material as gas, steam or suspended matter in the air on the job, which can be minimum achieved after state of the art.

The TRK value becomes for carcinogenic, - suspicious and hereditarygood-changing materials indicated, for which no MAK value may be indicated.

The TRK value is to minimize the risk health damage, since also at kept TRK value an impairment of the health of humans is not impossible. The TRK values apply to persons, who are healthy and of the employable age.

The TRK values were specified up to the year 2004 by the committee for dangerous working materials. With the novella 2005 stepped all TRK values and all technically justified MAK values to the dangerous material regulation repealed.

Literature

• Helmut Blome, Wolfgang Pflaumbaum, Markus of mountain: From the technical arranging concentrations to the job limit values of the new dangerous material regulation. Dangerous materials - keeping clean of air 65 (1/2), P. 23 - 30 (2005), ISSN 0949-8036

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