Translation of "Maximale arbeitsplatzkonzentration" in English

For example, the extrusion of polycaprolactam generates caprolactam vapors which must be removed since caprolactam has a maximum allowable concentration (MAC value) of 25 mg/m3.

For example, the extrusion of polycaprolactam generates caprolactam vapors which must be removed since caprolactam has a maximum allowable concentration (MAC value) of 25 mg/m3.

In the drying and desorption phase, not only is a large part of the solvent vapor carried along by the drying gas removed but the heated adsorption medium is also regenerated by the drying gas. In the subsequent adsorption phase, the solvent may therefore be removed by cool adsorption medium from the drying gas to such an extent that the workplace concentration in the drying chamber remains below the maximum limit and, consequently, the workpieces may be taken out.

Now, recently, apart from the toxic properties of many aromatics used, the maximum allowable concentration (MAC) for formaldehyde has been very greatly reduced.

However, the use of these polyurethane compositions is not without its problems, because the diisocyanate monomers they contain are toxic, injurious to health, irritating, and sensitizing. This means that during the processing of polyurethane compositions, care must be taken to ensure that the maximum allowable concentration (MAC) of the isocyanates, which depends on their vapor pressures, is not exceeded.

The threshold limit value (TL value) which is specified in the relevant Public Health Authority Regulations is 0.1 ppm of ozone.

Thanks to its relatively low toxicity, the admissible MAK values (maximum workplace concentrations in ml/m3) are two and a half times higher than those of isopropanol, methanol and methyl ethyl ketone and ten times higher than those of toluene.

Complete extraction of the emissions by means of special suction devices above and below the material Compliance with relevant safety at workplace (Maximum Admissible Workplace Concentration)

The MAK-Value (max. workstation concentration) is the maximum concentration of a working material as gas, steam or aerosol in the air with an eight-hour exposure and an average number of hours worked per week of 40 hours, with which the health of the persons employed is not impaired.

Since this flap, as mentioned above, is also located transversely to the outrunning belt, the space in the area of the exiting and returning outrunning chain cannot be sealed, so that the maximum workplace concentration (MAK) in the environment will be degraded and a lot of air is lost during production.

As a result of their carcinogenic effect, very low MAK values (MAK=maximum workplace concentration) apply in particular to aromatic substances.

For that reason, the German Health Authority has introduced a maximum work place concentration (Maximum Allowable Concentration MAC) of 0.3 ppm (0.375 mg/m 3).

A sufficiently short measurement time can be ensured for reliable detection of the maximum workplace concentration (MWC) value.

Further, for polyacrylic acid in the form of powder, a maximum allowable concentration was established in the newly introduced category 4 (non-genotoxic carcinogens which allow for threshold values to be established).

The MAK value (maximum workplace concentration) is therefore only 10 ppm, a fact which requires special protective measures which lead to increased production costs.

These measures, including for example the obligation to ensure that the maximum workplace concentration is not exceeded, extraction of the vapors at the point of formation and elimination, are highly cost-intensive and, in addition, are an obstacle to certain methods of application, for example spraying, of the reactive polyurethane compositions.

Extensive workplace measurements with Purbond adhesives have shown that the level present is less than 1/100 of the required MWC (maximum workplace concentration).

Even when so-called low-free TDI prepolymers are used (prepolymers with a free TDI content of < 0.1 %), however, there is still a danger of the maximum workplace concentration limit for TDI being exceeded under certain circumstances.

The maximum admissible concentration (MAK value) of aluminum oxides must not exceed 1,5mg/m3 (respirable fraction).

The Senate Commission of the Deutsche Forschungsgemeinschaft has fixed the maximum admissible concentration (MAK-value) of aluminum oxides to amount to 1,5mg/m3.

Mercury vapor, which is already formed at room temperature, is highly toxic: vapor with a mercury concentration exceeding the TLV (threshold limit value) or OEL (occupational exposure limit value) causes chronic poisoning after prolonged breathing for 5 to 8 hours per day.

Since by the procedure condensation can be avoided, the distance of the hydrogen peroxide possible after the sterilisation phase and reaching the MAK value (permissible maximum job concentration) of 1 are within a short time ppm.

There are some detectors which trigger an alarm when the maximum allowable concentration of a toxic gas is exceeded in the work place.

Although the amount of solvents released may be well below TLVs (threshold limit values), working in such an environment may cause harm and should be avoided.

As soon as the solvent concentration in the recirculated air is below the maximum workplace concentration allowed the ventilator 50 is switched off and the workpiece may be removed from the treatment chamber.

Practical use of the oxidizing agents mentioned above is regulated today due to their known, relatively harmful effects on people and the environment, so there are limits with regard to the concentration in preparations and the maximum allowed job site concentration (MAK value) (e.g., classification of substances and preparations according to EC Guideline 67/548/EEC including annual updates). Therefore, the VCI combinations mentioned here with excessive passivator amounts can no longer be used.