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, and 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 material: 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 can be selected for a longer service life.