Technical developments for accurate determination of amount of samples used for TOF measurements Kazushi Terada, Taro Nakao, Shoji Nakamura, Atsushi Kimura, Osamu Iwamoto, Hideo Harada, Koichi Takamiya and Jun-ichi Hori EPJ Web Conf., 146 (2017) 03019 Published online: 13 September 2017 DOI: 10.1051/epjconf/201714603019