TABLE 1.

pH and electrical conductivity (EC) of NaCl, NaHCO₃, and Na₂CO₃ solution at the various concentrations.

Treatment	Concentration		pH	EC
	mmol L–1	% (w/v)		(mS cm–1)
Control	0	0	6.05	0
NaCl	50	0.29	6.10	4.84
	100	0.59	5.91	9.24
	150	0.88	5.72	13.63
	200	1.18	5.70	18.21
	250	1.47	5.68	–
	300	1.77	5.62	–
NaHCO3	50	0.42	8.57	3.92
	100	0.84	8.51	7.16
	150	1.26	8.46	10.28
	200	1.68	8.37	13.21
	250	2.10	8.34	15.76
	300	2.52	8.34	–
Na2CO3	10	0.11	10.89	2.04
	20	0.21	10.99	3.73
	25	0.27	11.05	4.51
	30	0.32	11.05	5.26
	40	0.43	11.12	6.76
	50	0.53	11.15	8.12
	75	0.80	11.18	11.53
	100	1.06	11.22	14.69
	125	1.33	11.20	17.64
	150	1.60	11.19	–

“–” indicates that the value exceeded the maximum measurement range.