Table A3.

Data from SA experiments. Each row refers to a single experiment. Δ_DIC is the addition of NaHCO₃. pH_f is the final pH. (TA_f−TA_i) and (DIC_f−DIC_i) are the differences between the final values of TA and DIC and those referred to measurements taken just after the addition of bicarbonate. CO_2,f−CO_2,i indicates the variation of CO₂ in the gas phase, expressed as µmol of gaseous CO₂ per L of solution volume. Δ_C,tot is the total variation of carbon in the system, considering the atmosphere and the solution contribution. Ω_Ar is the calculated aragonite saturation state, at the beginning of each experiment, right after the bicarbonate addition.

ΔDIC (µmol/L)	pHf	TAf−TAi (µeq/L)	CO2,f−-CO2,I (µmol/L)	DICf−-DICi (µmol/L)	ΔC,tot (µmol/L)	ΩAr
0	8.03	18	70	−92	−22	2.58
0	7.93	68	57	−94	−37	2.28
400	7.98	116	105	−122	−17	2.96
400	7.96	−16	149	−129	20	2.53
800	8.00	112	66	−169	−103	3.37
800	8.01	−4	66	−143	−77	3.71