/ http://www.slideshare.net/images/logo.gif / 際際滷Share feed for 際際滷shows by User: elabbasnasr https://public.slidesharecdn.com/v2/images/profile-picture.png Maintain the lab and calibrate equipment, including documentation of use and results. Identify and investigate abnormal test results, conducting root cause analysis. Extract, derive, and analyze samples using scientific equipment. Prepare study protocols, collect data, and present recommendations.