Earth Pro Red Dye is a synthetic iron oxide pigment used to colour cement.
Earth Pro Red Dye is a water-dispersible pigment, which can be used as an indicator for determining the pre-flush/cement interface when cementing oilfield casing. Typical application rates range from 1-2 water-soluble bags per cubic meter of pre-flush. Since the product is almost inert, there is little or no effect on cement integrity at the fluid interface. In critical holes, pre-job tests should be conducted to confirm the original cement characteristics.