TY - MANSCPT DB - Science History Institute DP - Science History Institute M2 - Courtesy of Science History Institute. Rights: No Known Copyright TI - Leo Ruhnau conducting acid analysis in Dow Chemical Company laboratory ID - mk61rh48m AU - Dow Chemical Company DA - 1944/// YR - 1944 AV - Dow Chemical Company Historical Image Collection, Box 7, Folder Plants--Main Laboratory (Old) VL - Dow Chemical Company Historical Image Collection, Box 7, Folder Plants--Main Laboratory (Old) AN - Dow Chemical Company Historical Image Collection, Box 7, Folder Plants--Main Laboratory (Old) UR - https://digital.sciencehistory.org/works/mk61rh48m AB - General view of technician Leo Ruhnau using an apparatus to determine the percentage of hydrochloric acid in Dowell acids at a Dow Chemical Company laboratory. KW - Employees KW - Industries KW - Scientific apparatus and instruments KW - Dow Chemical Company KW - Glassware KW - Laboratories KW - Ruhnau, Leo LA - ER -