Starting a FIA system

It is always advisable to perform a number of functional tests and dispersion measurements on a newly designed manifold. This is helpful if the user is not familiar with the technique. The time so spent will result in a better understanding of the physical functions of the system so that problems, connected with the chemical reactions on which the analytical procedure is based, will be identified and readily solved. 

As repeatedly emphasized in this book, the dispersion coefficient or D is the key parameter in FIA, as it indicates the degree of dilution of the original sample solution and thus the extent to which the injected 

Carrier Stream Solution. 1 x 10 M aqueous borax solution. 

Dye Solution. A dye stock solution is prepared by dissolving 0.400 g of bromothymol blue in 25 mL of 96% ethanol, making the final volume up to 100 mL with the 1 x 10 M borax solution. The dye solution used is then prepared by mixing 1 mL of the stock dye solution with 199 mL of the 1 X 10 M borax solution (the absorbancy of this solution m a 10-mm-long cell is 1.2 A). 

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