| ACVT_HSWS_O_HFREE | Conversion ratio H_SWS/H_free from free pH-scale to SWS scale |
| ACVT_HTOT_O_HFREE | Conversion ratio H_Tot/H_free from free pH-scale to Total scale |
| AK_AMMO_1_YAMI95 | Dissociation constant of ammonium in sea-water [mol/kg-SW] |
| AK_BORA_DICK90 | Boric acid dissociation constant KB in mol/kg-SW |
| AK_CARB_0_WEIS74 | Henry's constant K0 in (mol/kg-SW)/atmosphere |
| AK_CARB_1_LUEK00 | First dissociation constant of carbonic acid in mol/kg-SW from Luecker et al. |
| AK_CARB_1_MILL95 | First dissociation constant of carbonic acid in mol/kg-SW from Millero et al. (1995) |
| AK_CARB_1_ROYE93 | First dissociation constant of carbonic acid in mol/kg-SW, from Roy et al. |
| AK_CARB_2_LUEK00 | Second dissociation constant of carbonic acid in mol/kg-SW from Luecker et al. |
| AK_CARB_2_MILL95 | Second dissociation constant of carbonic acid in mol/kg-SW from Millero et al. (1995) |
| AK_CARB_2_ROYE93 | Second dissociation constant of carbonic acid in mol/kg-SW from Roy et al. |
| AK_H2S_1_MILL95 | Dissociation constant of hydrogen sulfide in sea-water |
| AK_HF_PEFR87 | Dissociation constant of hydrogen fluoride in sea-water [mol/kg-SW] |
| AK_HSO4_DICK90 | Dissociation constant of hydrogen sulfate (bisulfate) in sea-water |
| AK_PHOS_1_MILL95 | First dissociation constant of phosphoric acid (H3PO4) in seawater |
| AK_PHOS_2_MILL95 | Second dissociation constant of phosphoric acid (H3PO4) in seawater |
| AK_PHOS_3_MILL95 | Third dissociation constant of phosphoric acid (H3PO4) in seawater |
| AK_SILI_1_MILL95 | First dissociation constant of sillicic acid (H4SiO4) in seawater |
| AK_W_MILL95 | Water dissociation constant Kw in (mol/kg-SW)^2 |
| solve_pH_from_AT | Solver for the total alkalinity-pH equations |