Traceability of the Micro Scale Pipe Viscometer for Traceable Calibration of Dynamic Viscosity

Calibration of flow devices is important in several areas pharmaceutical, chemistry and microfluidic applications where dosage process liquids or accurate measurement rate important. The process-oriented liquid itself might influence the performance a device simultaneous determination dynamic viscosity under conditions provide valuable information for parameters. To offer calibration at corresponding flowrate, METAS built pipe viscometer traceable inline current facilities low flowrates from 1 μL/min to 150 mL/min pressure drops up 10 bar. traceability all measuring quantities as well geometrical dimensions microtube guarantee SI units. most challenging part inner diameter microtube. This can be achieved by drop function flowrate using applying Hagen–Poiseuille law with reference (water) performing measurements utilizing μ-CT facility METAS, determined X-ray diffraction. validation stated uncertainty was performed calibrating density kinematic viscosity. setup facility, calculation are discussed this paper.