話說今日BIO LAB做Paper Chromatography,完本應該係一個中二都會做gei實驗.
但係我試左成兩張paper, 都唔知點解d color spot都唔係好郁咁.
問阿sir啦, 又叫我試多次.
一樣...
係唔係solvent gei問題呢?佢又話有其他因素...
用左五張paper, 都係換d solvent再試, 鬼叫佢地個個唔係用我支solvent gei都冇問題咩.
真係...掂左.
用左我咁耐...搞到爭d寄唔切信.
事後問過知情人士, 支solvent 果然好可能係過左期...
又俾人點.
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