M4000 Spark Oes For Material Testing M4000 Spark Oes For Material Testingcreatively combined with world leading argon circulation technology enables the analysis of Fe, Al, Cu and other bases materials. Spark oes( oes testing) is an ideal solution to fast and accurate quantitative analysis near the furnace, metal material quality control and scientific research, oes material testing. Optical System Paschen-Runge optical system Mult-CCD detectors with high resolution Wavelength range: 175-520nm Optics sealed argon circulation system Spark Stand Open sample clamp Easily operated sample clamp adapted to different sample geometrics Optimized argon circuit design Easy to clean and maintenanceExcitation Source Programmable pulse digital source Maximum discharge frequency: 1000 Hz Maximum discharge current: 400 A