The International Electrotechnical Commission (IEC) has established a specific testing method (IEC 62321-7-2: 2017) to determine Cr (VI) in electronics and polymers. The method describes procedures to first extract Cr (VI) from polymer and electronic, then to analyse it via colorimetric method reacting Cr(VI) with diphenylcarbazide and measuring at 540 nm.
Sample preparation is the pivotal step of the method, the use of microwave heating has been described in the IEC 62321-7-2: 2017 to enhance the efficiency of the extraction from difficult insoluble/unknown polymers or electronic materials. The application report will describe the use of Milestone ETHOS X and its capability to overcome specific challenge in the application of the IEC 62321-7-2: 2017 method.