even when the paint being disturbed has a lead concentration less than the EPA limit of 0.5%. Illustration 1 is a graph of typical airborne lead levels for common work activities when the paint film that is being damaged contains approximately 0.3% leadâa concentration low enough that the material is exempted from RRP requirements.
Reactance is mathematically symbolized by the letter âXâ and is measured in the unit of ohms (Ï). Impedance is a comprehensive expression of any and all forms of opposition to electron flow, including both resistance and reactance. It is present in all circuits, and in all components.
Conductivity (or specific conductance) of an electrolyte solution is a measure of its ability to conduct electricity. The SI unit of conductivity is siemens per meter (S/m).esistivity of pure water (in MÏ-cm) as a function of temperature. The SI unit of conductivity is S /m and, unless otherwise qualified, it refers to 25 Â°C. Often encountered in industry is the traditional unit of Î¼S/cm. 10 6 Î¼S/cm = 10 3 mS/cm = 1 S/cm.