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Table 1

Composition of formation water used for testing the materials.

Components (g/L) wt.% ppm
NaCl 38.5136 3.85136 38 514
Na2SO4 4.3152 0.43152 4315
CaCl2 6.7540 0.67540 1748
MgCl2.6H2O 14.4432 1.44432 14 443
KCl 0.8870 0.08870 887