The purchase decisions of the modern-day FMCG consumer is dependant largely on the print quality of the packaging material. Uneven colour shades on the printed substrate is a commonly occurring phenomenon, resulting in low quality printed material - which might influence a buyer negatively. Ink viscosity plays a vital role in ensuring uniform colour shades across the printing substrate. Consistent printing and optimum use of ink and solvents can be realised only with stable viscosity.