5 components: Ammonium (NH4+) 10mg/l Potassium (K+) 20mg/l Sodium (Na+) 10mg/l Lithium (Li+) 2mg/l Ethanolamine (for Inorganics) (C2H7NO) 10mg/l in Water ISO 17034 and ISO 17025,, Conservation 12 months. (6 months after opening),, Ambient Tem 1 * 500 mL