Underwater Chest Drainage Bottle

The Underwater Chest Drainage Bottle is a critical component of the chest drainage system. One bottle chamber contains a tube, which, when filled with water up to a certain level, creates a water seal to prevent air from returning to the patient. The bottle also features a visible marking line that indicates the correct water level for the seal, which is 2 cm from the bottom. The bottle can be connected to other chambers to form a three-chamber chest drainage system.