Home Products Parts & Accessories Sample tubes 300 mL (set of 4) For sample volumes up to 200 mL in volume or 5 g in weight. 样品管300毫升(4套)适合标准rd Kjeldahl and for most applications: 0.1 – 5 g solid sample / up to 200 mL liquid sample / 5 – 30 mL H2SO4 Services More Services Discover our services Installation Maintenance & Repair Qualification & Calibration Training