Noevita, V. D.; Savana, R. T.; Syahrani, M. P.; Rahman, N. R. Operational Guidebook Development for FTIR Spectrum Two and Rotavapor R-300 Instruments in the Chemistry Research Laboratory, Faculty of Mathematics and Natural Sciences, Universitas Negeri Surabaya. Proceeding Int. Jt. Conf. UNESA 2025, 3.