The viscosities of aqueous glycerol and carboxymethyl cellulose solutions were measured by means of the custom-built automated capillary viscometer shown schematically in Figure . To automatically control the system, a user interface was implemented in LabView 2014 (SP1), that allowed to visualize, analyse, and save the acquired signals. For the non-Newtonian solutions, a special mode was established to test multiple predefined flow rates in an automated sequence. A syringe pump (CETONI neMESYS 290N) was selected to ensure accurate and constant flows free from pulsation, and equipped with a 10 mL glass syringe (CETONI, ID 14.57 mm). The pump was connected to an automated three-ports valve (CETONI valve, max.