XRD unit is located near Pittsburgh. The contact is Ted Woycio ted.woycio at eljer.com General Electric XRD-5 x-ray diffraction unit. It has an EG&G Otec Model 556 high voltage power supply, EG&G Model Ortec 4001A Modular System Bin, EG&G Ortec Model 4002 power supply, and a General Electric Potentiometer Recorder Model BHF1A010178.