Item Package Quantity:12 Bottles contain Eyesaline saline solution for use in personal eyewash devices that offer secondary response and are intended to supplement, not replace, primary eyewash units. Also used for continued irrigation when moving an injured person from a primary eyewash unit to medical care. Easy-open top is tamper-resistant, yet easily removed in an emergency. User-controlled volume delivers drops or an irrigating stream of solution, depending on the squeeze pressure applied to the bottle.