Instructions: 1. This series of vacuum measuring tanks are corrosion-resistant chemical equipment, widely applicable for handling corrosive media such as acids, alkalis, and salts. 2. The allowable working pressure of the equipment is <0.1 MPa. Type I features an internal reinforcement structure, while Type II is externally reinforced. The interior is smooth and free of dead corners, complying with GMP requirements for pharmaceutical equipment. 3. Equipment materials: For general corrosive media, standard reinforced polypropylene or pure polypropylene equipment is more cost-effective. However, in environments with elevated temperatures or highly acidic conditions, where equipment lifespan may be limited, fiberglass-reinforced polypropylene (FRPP) offers a longer service life.