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在稀释澄清后吸取试液一毫升到比色管内这一工序中,原来是用吸管吸取,这样每人每天只能分析400个元素,不仅效率低,而且一吸一吹,易把试液吸入嘴里,危害操作人员的身体健康.为此,我们采用了内径为0.5厘米的玻璃这为移液管,在一毫升容量处刻上刻度或以红铅油划上标记,这样在移液时,一手握玻璃管上段,插入溶解管中,当管中溶液上升至刻度后,以大姆指者住上口,移入比色管,再放开大姆指,将玻璃管向下震动一下,以完全清除因表面张力而附着在管口液体.这样操作既省力,又能减少错误的产生,根除了把试液吸入嘴里现象.如操作熟
In the clarified after dilution to draw a test solution into the colorimetric tube in this process, the original pipette, so that only 400 elements per person per day analysis, not only inefficient, and a suction a blow, easy to test solution inhalation Mouth, endangering the health of the operator.To this end, we use the glass diameter of 0.5 cm pipette, at a milliliter of capacity at a scale or marked with red lead oil so that when the pipette , Holding the upper glass tube in one hand and inserting into the dissolving tube. When the solution in the tube rises to the mark, it is moved to the colorimetric tube with the thumb of the thumb and then moved to the colorimetric tube. Then the thumb of the glass tube is released and the glass tube is vibrated downward. In order to completely remove due to surface tension and attached to the nozzle liquid.This operation is both labor-saving, but also reduce the error, eliminating the phenomenon of the test solution into the mouth.If the operation is cooked