AIROSWISS EZ-Cal AOS A7417.

Simple and Safe Cleaner/Descaler for all Humidifiers:
Air-O-Swiss EZCal is ideal for routine maintenance and cleaning on most humidifier brands. Regular cleaning will extend the life of your appliance and insure top performance.

Contains 3 (three) 1 oz packets of powder concentrate.

• Formulated for all humidifiers (Evaporative Humidifiers, Ultrasonic Humidifiers, Steam Humidifiers, Vaporizers, and Air Washers).
• Recommended cleaning - once every 2-3 weeks.
• Model #AOS A7417
• Made in the USA

Directions
Add the concentrated powder from 1 packet to 32 oz (1 liter) of hot water. Stir until the powder has completely dissolved. Pour the liquid into the water base of the humidifier and let sit for 30 minutes. Thoroughly rinse with water, and clean with brush if necessary.

Ingredients:
Citric Acid, Aluminum Salts, Sulfamic Acid.