Scientific Mes-Technik Pvt. Ltd. Manufactures Mains Distortion Meter. Calibration Lab of Scientific Mes-Technik Pvt. Ltd. Is accredited to ISO/IEC 17025:2005. The model number of Mains Distortion Meter is SM5028. The Mains Distortion Meter is developed for the measurement of nonlinear distortion in the line frequency range. Due to its low residual distortion and noise of only 0.005 percent, it is ideally suited for tests and measurements of high quality line power generators, UPS and invertors, and sine wave generators.