S403 is a high-performance weighting agent for drilling and cementing fluids. S403 is synthesized as part of the production of Manganese by blowing oxygen through the molten manganese metal, microspherical fumes are created. These fumes are collected in a narrow particle size distribution providing a D50 size of around 1μ. Because it is not milled, S403 maintains consistency in both PSD & almost perfect sphericity. It is both the size and shape which contributes to its unique properties. Unlike other weighting agents such as Barite which are milled and thus have angular morphology and wide PSD, S403 has spherical morphology.
