Results of induction time experiments as a function of S, including 95% confidence intervals from linear regression.

Samplea	S b	J (m−3 s−1)	τ (s)	Samplec	S	J (m−3 s−1)	τ (s)
7.9 mM	47.0	198	101	2% TMI	46.8	118	170
7.7 mM	45.8	174	115	6% TMI	46.1	88	227
7.5 mM	44.6	150	133	10% TMI	44.3	72	278
7.3 mM	43.5	120	167	14% TMI	43.4	56	357

^aSample is a solution of different concentrations of urate at pH = 7.4 in the presence of 150 mM NaCl.

^bS is the supersaturation.

^cSample is a solution of different concentrations of xanthine at pH = 7.4 in the presence of 150 mM NaCl and 8 mM urate.