The goal in delivering Flex ICE to the market was to make an extraction compound so complete that no other product would ever be needed. No matter what pre-spray is used, and no matter the carpet or upholstery fiber, Flex ICE leaves the fiber exquisitely clean and at a neutral pH. Since it brings down the pH, and doesn't leave a resoiling residue, the carpet will stay soft to the touch without a soapy residue feel. With a majority of professional cleaners using the Hydro-Force injection sprayer or similar devices, there has been a concern about an acid side pH rinse taking down the cleaning power of an alkaline prespray. Flex ICE has been tested and proven to not diminish the cleaning strength of the prespray when using a Hydro-Force sprayer. In fact, it is reported it actually adds to the cleaning ability. Flex ICE is actually good for your equipment. Not only will it keep hard water scaling from forming in the solution lines, it has special additives that protects steel, brass and copper. It has been tested over hundreds of hours of use with no deterioration to metals. Your dream cleaning emulsifier is now here! Flex ICE sets a new standard for best overall value of any rinse products on the market.