Table 1.

Description of the examined solutions. The mixing ratios are expressed as v/v. The primary and measured (actual) citrate concentrations correspond to solutions before and after the addition of HCl, respectively.

Series A, citric acid		Series B, trisodium citrate		Primary citrate concentration (mmol/L)	Measured citrate concentration (mmol/L)
Series A1	Series A2	Series B1	Series B2
Reference: H2O	Reference: H2O + HCl (1:1)	Reference: H2O	Reference: H2O + HCl (1:1)	0	0
Studied solution + H2O (1:1)	Studied solution + HCl (1:1)	Studied solution + H2O (1:1)	Studied solution + HCl (1:1)	0.5	0.25
				1.0	0.50
				2.0	1.0
				3.0	1.5
				4.0	2.0
				5.0	2.5
				6.0	3.0
				7.0	3.5
				8.0	4.0
				9.0	4.5
				10.0	5.0