My research stay at KIT-ITEP lasted from April 17 to June 20. VAK-FCD affiliated me, and Mr. Volker was my supervisor. JSPS supported all of the expenses. I worked on research about lithium-6 isotope enrichment with Ms. Sarvenaz, Mr. Volker, and others. The lithium isotope ratio was planned to be evaluated. Safety training and maintenance of the ICP-MS equipment have been performed. Thank you for any cooperation of KU (Yagi Lab. and Nohira Lab.) and KIT (ITEP-VAK) members.