Instructions 1. This series of vacuum measuring tanks are corrosion-resistant chemical equipment, widely applicable in corrosive media such as acids, alkalis, and salts. 2. The allowable working pressure of the equipment is <0.1 MPa. The allowable working temperature: Type I features an internal reinforcement structure, while Type I (external) is externally reinforced. The interior of the equipment is smooth and free of dead corners, complying with GMP requirements for pharmaceutical equipment. 3. Equipment materials: For general corrosive media, equipment made of ordinary reinforced polypropylene or pure polypropylene is more cost-effective. However, in media with relatively high temperatures and strong acidity, the service life of such equipment may not be ideal. In such cases, fiberglass reinforced polypropylene (FRPP) material is recommended for extended equipment lifespan.