PP gas washing cylinder, made of polypropylene material, with a frosted mouth that is easy to connect to hoses, and a more sealed connection through welding. Compared with glass, it does not contain boron, is not fragile, and is convenient for outdoor sampling. It can be customized according to requirements and sold by the manufacturer at a favorable price. For large quantities, customers can inquire with customer service. The minimum order quantity is 3 pieces