Citric Acid | ONLINE REFILL

Citric acid occurs naturally in citrus fruits and is a colorless, weak, organic acid. It is used widely as acidifier, flavoring, preservative, and chelating agent. 

It is used:

• to remove and discourage the buildup of limescale
• to treat water, which makes it useful in improving the effectiveness of soaps and laundry detergents. By chelating the metals in hard water, it lets these cleaners produce foam and work better without need for water softening. Citric acid is the active ingredient in some bathroom and kitchen cleaning solutions. 
• as a six percent concentration of citric acid will remove hard water stains from glass without scrubbing
• to dissolve rust from steel