Table 3. The five unique formulations that comprised the experiment.

The experiment was free of ion confounding because only the target ions Na+ and K+ were varied. All other ions in MS medium were held constant.

Media	Na+	K+	NH4+	NO3-	PO43-	Ca2+	Mg2+	SO42-	Cl-	∑ mM
	mM	mM	mM	mM	mM	mM	mM	mM	mM	mM
1	23.2	0	20	40	1.25	3	1.5	1.6	6	96.55
2	17.4	5.8	20	40	1.25	3	1.5	1.6	6	96.55
3	11.6	11.6	20	40	1.25	3	1.5	1.6	6	96.55
4	5.8	17.4	20	40	1.25	3	1.5	1.6	6	96.55
5	0	23.2	20	40	1.25	3	1.5	1.6	6	96.55