The determination of polyphosphates in the presence of standard anions using dual suppression ion chromatography
With the 828 ion chromatography dual suppressor, Metrohm says it has solved the equation 1+1=3.
This means you buy two suppressors and actually receive three: one chemical suppressor, one CO2 suppressor, and one electronic suppressor.
The continuous mode of the 828 IC dual suppressor allows gradient systems to be realised in a simple way with the flexibility of the carbonate/hydrogen carbonate systems being used to their full extent without restrictions.
The determination of pyro-, trimeta- and tripolyphosphate in the presence of fluoride, chloride, nitrite, bromide, nitrate, phosphate and sulphate using anion chromatography with a high-pressure gradient and conductivity detection after chemical suppression is an example application of the Metrohm 828 dual suppressor (it can also be used to suppress the conductivity of concentrated sodium and potassium hydroxide eluents).
