GENERAL OPERATIONS

47

weighed. Calculate the volume of the water from the observed weight and
record this as the capacity af the pipette to the zero mark.

Using the small weighing bottle determine in a similar manner the
capacity of the pipette stem between 0 and 5. DiviJe this capacity by 50
in order to obtain the value of the smaller subdivisions.

From the capacities so determined calculate the number of stem divisions
to be added to the zero in order to obtain the rated capacity of the pipette.
Mark the point so determined, using the method directed for marking
flasks.

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