HomeProductsParts & AccessoriesSample tubes micro (set of 4)For sample volumes up to 3 mL or 0.2 g in weightSample tube for Micro-Kjeldahl for homogeneous samples which are high in nitrogen/protein content: 0.2 g solid sample / 2 - 3 mL liquid sample / 5 mL H2SO4 ServicesMore ServicesDiscover our servicesInstallationMaintenance & RepairQualification & Calibration Training