RoHS-compliant does not equal lead-free

| | Pressure

In practice, RoHS-compliant is often equated with "lead-free". However, this is a widespread mistake. The RoHS directive 2002/95/EC aims to minimize the use of hazardous substances (including, among others, lead), but it does not completely exclude a small percentage. …

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Level measurement in ground water

| | Level

The recovery of drinking water from ground water has top priority in many countries. In Germany, this method has a share of about 70 per cent in the water supply. The water drawn from depths of several hundred of meters below the earth’s surface is normally in …

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