- 38- 



water, and the value for the green-blue change representing the 

 lowest measurable concentration of simiilated bleed water. In 

 each case it was the intention to make these values straddle the 

 noiiiinal dilutions specified for the tests. The dilutions were 

 calculated as follows: 



V = volume of Gulf water titrated (50 cc by volu/aetric pipette) 



O 



Va = volume of intermediate standard acid used to neutralize V 

 V^ = volume of simulated bleed water equivalent to Vg 



for 



1:200 J. = 9.96 x _!l J (6) 



tests 



for 



1:1000 J. = 50.2 X J: (7) 



tests 



