Assay results for the determination of the TR in pure form by the proposed and comparison method.

Compound	Proposed method			Comparison method22
	Conc. taken (μg mL−1)	Conc. found (μg mL−1)	% founda	Conc. taken (μg mL−1)	% founda
TR	1.0	0.984	98.4	3.0	99.33
	2.0	2.028	101.4	6.0	100.68
	3.0	3.003	100.1	9.0	99.77
	6.0	6.035	100.58
	8.0	7.957	99.46
	10.0	9.95	99.5
	14.0	14.145	101.04
	15.0	14.903	99.35
Mean			99.98	99.93
± S.D.			0.99	0.69
t-Test			0.07 (2.26)*
F-Test			2.06 (19.35)*

^aN.B. Each result is the average of three separate determinations. The figures between parentheses are the tabulated t and F values at P = 0.05.³⁷