Supply of Graphite Disc Electrode, Grade To Agksp, Total Impuritynot To Exceed 02 Ppm. Size Od- 0.492 Inch, Id- 0.125 Inch, Width 0.2 Inch .For Spectroil Q-100 Benchtop Rotating Disc Electrod Spectrometer. War Ranty Period: 30 Months After The Date Of Delivery