Solubility of gypsum vs. anhydrite
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Gypsum (flask on left) and Cal-CM Plus, a mined anhydrite product (flask on right). Solubility and EC readings at 3 minutes and 12 hours after product introduction (middle and bottom photos) show that the majority of the gypsum solubilized, but that a significant portion of the Cal-CM Plus did not. For more detail, see the Super Journal report, Gypsum vs. mined anhydrite for sodium management.
