Dispersions are quite sensitive to growth and attack by micro‐organisms. This presents itself by discolouration of the dispersion, a putrid smell, gasformation and alterations of the physical properties of the pH. Total disintegration such as the dispersion seldom occurs. A contaminated product does not have to show all the above mentioned effects but may show only discolouration.
Evertsen, P. (1986), "The protection of dispersions against micro‐biological contamination during production and storage", Pigment & Resin Technology, Vol. 15 No. 8, pp. 4-4. https://doi.org/10.1108/eb042259Download as .RIS
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