US 12,252,669 B2
Cleaning compositions with pH indicators and methods of use
Noah Hershey, Arlington, MA (US)
Assigned to ALPHA CHEMICAL SERVICES, INC., Stoughton, MA (US)
Filed by Alpha Chemical Services, Inc., Stoughton, MA (US)
Filed on Mar. 3, 2022, as Appl. No. 17/685,684.
Application 17/685,684 is a continuation of application No. 15/698,083, filed on Sep. 7, 2017, granted, now 11,274,270.
Claims priority of provisional application 62/532,501, filed on Jul. 14, 2017.
Claims priority of provisional application 62/482,818, filed on Apr. 7, 2017.
Prior Publication US 2022/0251482 A1, Aug. 11, 2022
Int. Cl. C11D 11/00 (2006.01); A23L 5/20 (2016.01); B08B 9/032 (2006.01); B08B 9/08 (2006.01); B67D 1/07 (2006.01); C11D 3/00 (2006.01); C11D 3/04 (2006.01); C11D 3/20 (2006.01); C11D 3/34 (2006.01); C11D 3/36 (2006.01); C11D 3/40 (2006.01); B08B 9/027 (2006.01)
CPC C11D 3/0042 (2013.01) [A23L 5/20 (2016.08); B08B 9/032 (2013.01); B08B 9/08 (2013.01); B67D 1/07 (2013.01); C11D 3/044 (2013.01); C11D 3/2086 (2013.01); C11D 3/3409 (2013.01); C11D 3/364 (2013.01); C11D 3/40 (2013.01); A23V 2002/00 (2013.01); B08B 9/027 (2013.01); B67D 2001/075 (2013.01); C11D 2111/20 (2024.01); C11D 2111/44 (2024.01)] 13 Claims
 
1. A cleaning composition for use in cleaning food and beverage industry equipment or pharmaceutical and cosmetic industry equipment consisting essentially of a food-equipment-safe highly alkaline detergent or a moderately alkaline detergent and a food-equipment-safe colorimetric pH indicator, wherein the food-equipment-safe colorimetric pH indicator is configured to provide a visual reading of the basic conditions of the highly alkaline detergent or a moderately alkaline detergent prior to use in a cleaning process or during or after a cleaning process without mechanical or chemical sensors, meters or probes.