those given by the current procedura, not becasse of any inherert errens but because of changen in the nature of the chemical analysis. resionable and cost effective. Tho foliowing tata were obtanod for the qualify parameler by andyring samples using both grocedures: The forecanting model is oven by the equation Y C(Entor your responses munded to enre decimal places) those given by the current procedura, not becasse of any inherert errens but because of changen in the nature of the chemical analysis. resionable and cost effective. Tho foliowing tata were obtanod for the qualify parameler by andyring samples using both grocedures: The forecanting model is oven by the equation Y C(Entor your responses munded to enre decimal places)