They qualify as USDA BioPreferred products for Federal preferred procurement. Concentrates are designed for use with the ChemiCenter Jr. Dilution Control System. Each 1/2 gallon bottle has its own dilution tip to automatically dispense the correct ratio of chemical to water for the perfect cleaning solution every time, all the time. This 'self-proportioning' system also reduces maintenance, as systems remain clog-free. Green certified products provide safe and effective cleaning solutions for all your daily needs with environmentally responsible formulations. No spill bottles require the use of dispensing system. Color and number-coded to simplify training and reduce usage errors. Product containers are recyclable.