• Unique, patented tube with attached cap. • Volume: 50ml. Non-sterile. • Simplifies digestion analysis. • Attached cap can “lock” open at an angle, replacing a watchglass, enabling venting of your sample if desired. Cap also locks securely in place to contain sample during transport or storage. • Versatile disposal tube can be used for sample collection, storage and experimental purposes. • Certified accuracy of graduations and levels of trace metals. Graduations in 5ml increments. • Constructed of heat-resistant homopolymer polypropylene for good heat resistance and minimal background interference. • Textured cap surface provides labelling area on the cap for sample identification. • Simple design can be easily manipulated with one hand. • Avoids potential mismatch of cap and vial. Limits possible contamination. • Eliminates the need for purchasing a watch glass. • Compatible with most digestion blocks.