“…In phase X-ray reflection as described by Bragg's Law [8], where d is the distance between crystalline planes. For example, in the determination of scale in Bayer process liquors as vilaumite (NaF) [12] and the identification of scales in a Kraft pulp mill as predominantly calcite rather than pirssonite (Na 2 CO 3 $CaCO 3 $2H 2 O) [13]. For example, XRF was used to identify the calcium/magnesium phosphonates and aluminosilicate products formed in reverse osmosis desalination in the presence of phosphonate antiscalants [10].…”