Digestion Vessels and Accessories MoldPro Digestion Vessels are certified to class A volume accuracy, include a metals background report and are compatible with leading brand graphite block digestion systems. Made from virgin polypropylene Excellent visibility Very good resistance to acids Molded-in graduations are in 5 mL increments Textured marking area provides excellent writing surface for identification Each shipment comes with a certificate of volume accuracy stating the Vessels meet Class A tolerance for all 5 mL graduations Extremely low leachable metal content - each shipment comes with a metals background report Fit leading brand graphite digestion block systems Can be used as a digestion vessel, graduated cylinder, volumetric flask, autosampler Vessel, or storage container