COBRA is formulated to penetrate in airconditioner coils and fins to remove all types of soils. Upon contact with the surface of the coil, Cobra begins to react and flush soil to the surface. It is not necessary to rinse if applied in place to a functional unit.
Moisture produced will rinse product from contacted surfaces. Rinsing is required on units that have been removed for repair or cleaning.

pH - 13

Hold trigger sprayer 30 to 40cm from the coil to be cleaned. Direct spray between fins allowing the product to penetrate inner surfaces.
Allow standing 5 to 15 minutes, longer if excessive soil is present until the foam reaction has ceased.