Easy-to-dispense chemical neutralizer is ideal for use in tight spaces and hard to reach areas. Features KOLOR-SAFEå¨ color change process to let you know when chemicals are safe to handle for final clean-up and disposal. Concentrated formula can neutralize up to 2 times the acid as liquid neutralizers. Changes color from light purple to yellow, then a purplish color (orangish-pink with phosphoric acid) when neutralization is complete. Not for use on liquids containing any form of hydrofluoric acid or hydrazine.