1. Sodium polyphosphate is added to minimize the formation of tartar.

2. Aquios has devised a natural technology which uses a polyphosphate additive named Siliphos

3. 29 The white crystals are identified the ammonium polyphosphate ( APP ) by use of FT - IR.

4. A combination of aerobic and anaerobic treatment to selectively enrich polyphosphate-accumulating microorganisms in the bacterial community within the activated sludge.

5. The powdery polyphosphate ferric sulfate was prepared from iron vitriol, the byproduct in titanium pigment production by sulfuric acid process, and complex oxidant.