Photometric determination of sulfate
By the addition of barium salts, sulfate forms hardly soluble Barium sulfate. The generated turbidity is measured photometrically at 585 nm.
Due to the patented reagent mixture (DE 102017200310 B3) a more homogenious precipitate is formed. This allows for more precise results with significantly lower fluctuation rates.
The photometric determination is according to DIN ISO 15923-1:2014-07.