Using imported high-purity quartz, high-temperature molding, and integrated molding, the product has good consistency, uniform stress, and resistance to high temperature and high pressure. It is widely used in environmental monitoring equipment. The length of the digestion tube is 96mm or 106mm, with an upper outer diameter of 15.5mm and a wall thickness of 2.2mm, and a lower outer diameter of 10mm and a wall thickness of 3mm. The size of 96mm is consistent with that of a foreign brand digestion tube. Customization can also be made according to customer requirements.