做叶绿体色素分离层析实验所用的毛细吸管,多是教师自己用玻璃管拉制,因技术条件的限制,拉制的管常因管端粗糙不平影响实验效果。经反复试验,我们用废旧圆珠笔芯代替,使用效果良好,具体做法是:①将圆珠笔芯距笔尖一厘米处剪断,用一号缝衣针由后向前将圆 To do chlorophyll chromatographic separation capillary used in capillary pipette, mostly teachers use their own glass tube drawn, due to technical constraints, drawn tube often due to rough tube end uneven experimental results. After repeated tests, we use discarded ballpoint pen instead, the use of good results, the specific approach is: ① ball pen tip away from the tip of a centimeter cut with a needle from the back to the front of the circle