๐งช๐โซ๏ธโ๐ฃ๐ข๐ต
๐งโก๏ธโโก๏ธ๐
๐๐ฆโก๏ธ๐
๐งช๐งโก๏ธโจ
โฝ๏ธ๐จโก๏ธ๐
๐ง๐งชโก๏ธ๐
#chromatography #chemical separation #analytical chemistry #mobile phase #stationary phase #spotting line