A. Describe the glassware and the technique you would use to take part of a sample of a solution of concentration 1.00 and make it into a solution of concentration 0.250 (i.e., make a solution exactly one quarter of the original concentration).Use glassware that will result in the most precise dilution.
B.List at least three things you must do before making a measurement on the instrument (Spectronic 20D spectrophotometer).
C.Describe the elements of proper technique for handling the sample.