Academia provides scientific proof

McGill University in Montréal, Canada has published a study on the efficacy and protective layer formation of tannin-based boiler water conditioning products. Decades of positive real-world experiences with DEMKOR have now been scientifically confirmed.

Two researchers from the Canadian university, Dr. Roger Gaudreault and Dr. Mahdi Dargahi, employed precise QCM-D (Quartz Crystal Microbalance with Dissipation monitoring) measurement technology that offers nanogram-scale precision. The laboratory results prove that DEMKOR forms a layer within just ten minutes.

The scientists also used electrochemical impedance spectroscopy to conduct extensive corrosion inhibition efficiency measurements, going so far as to write a formula for the necessary calculations. They were also able to scientifically confirm a correlation between higher DEMKOR concentrations and a greater resistance to corrosion.

Adsorption kinetics of DEMKOR

Kinetic measurements show that the protective DEMKOR layer forms quickly. Apparently there is a maximum layer thickness that is not exceeded even if, after the optimal concentration has been achieved, additional product is dispensed. The layer that forms is reversible and dynamic. This mechanism was studied in detail to gain a deeper understanding of the phenomenon.


Efficient protection against corrosion

EIS measurements showed that the DEMKOR protective layer is responsible for strong corrosion inhibition that goes beyond the protection provided by oxygen scavenging tannins. Calculations based on the EIS measurements showed that the efficiency of this additional corrosion inhibition is greater than 80%.


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