Why can't the suction bottle be filled to its maximum capacity?

The capacity indicated on the suction bottle refers to its maximum volume, not the recommended fill level. In actual use, it is advised to fill only up to half of the bottle. This allows for a safety buffer—if the bottle is filled to the top, liquid movement, vibration, or the formation of bubbles may cause fluid to be drawn into the machine, leading to potential damage or contamination.

Safety is the top priority in clinical use. Leaving adequate space helps prevent backflow and equipment malfunction, ensuring stable operation and patient safety. Always follow the manufacturer’s guidelines to minimize risk.

Want a deeper explanation with real-world comparisons?

Check out our full blog article here: [ Why Only Half the Capacity of a Suction Canister Is Usable The Design Principles and Safety Considerations Behind It] 」