Ensure that eyes are thoroughly cleansed, with a full fifteen minute flushing from saline eyewash cartridges. Purified, buffered saline solution provides superior performance in emergencies, a significant improvement over tap water. Trilingual labels allow a wide variety of users to understand instructions. Cartridges are a vital part of the Fendall Pure Flow 1000 eyewash station. Capacity (Volume): 3.5 gal; Packing Type: Cartridge; Description: Eyewash Cartridge Providing Purified, Buffered Saline Solution for Full 15 Minutes of Flushing.