Preserved, buffered, pH balanced solution makes this replacement cartridge an excellent choice for workplace safety. Cartridge has a long shelf life; up to 24 months unopened and six months activated. Easy-to-install cartridge takes less than five minutes to put in place. Cartridge delivers three minutes of clean, fresh saline solution. Interior Volume Capacity: 1 gal; Product Packaging: Cartridge; Description: 12" x 10" x 13"; For Use With: Fendall Flash Flood Eyewash Stations 32-000400-0000, 32-000400-0022.