2375 Concrete & Grout Remover is an example of a new generation of cleaners designed for the removal of thin to moderately heavy deposits of concrete, mortar and grout without the use of hydrochloric acid. Up to ½ inch of cementitious material has been successfully removed from masonry and metal surfaces. Unlike traditional new masonry cleaners based on hydrochloric acid that attacks the surface of the cementitious deposit, 2375 is designed to penetrate the substrate and attack and weaken the bond of the cementitious matrix for easier removal. Because this reaction is slower and gentler than traditional new masonry cleaners, the desired depth of effect is greater and the time between application and removal is substantially extended. Depending upon the temperature, type, hardness, age and thickness of the material to be removed, reaction times may range from 15 minutes to 24 hours. Current testing has not produced stains on metallic sensitive clay masonry however some color changes have been noticed of darkly colored concrete blocks. 2375 is suitable for use on masonry as well as metallic surfaces found on concrete trucks, mortar mixers, grout pumps and similar equipment. 2375 is not suitable for polished masonry surfaces.

Provide protection for foliage, pedestrian and vehicle traffic. Test all non-masonry surfaces for possible adverse reactions. Protect all surfaces and situations where damage may result from spillage or material drift. Conduct testing to determine the proper dilution requirement, application method and dwell time for each project.

Masonry: To remove excess mortar and concrete splash, brush or spray properly diluted 2375 on the material to be removed after pre wetting the surface. Dwell times of up to one hour may be required depending upon conditions and method of removal. On softer masonry, extended dwell times will produce better results than using more aggressive rinsing methods. A thorough rinsing is required for all applications. Dilution ratios may be from zero to two parts water to one part cleaner.

Metallic Surfaces: For most grout and cement removals from equipment, 2375 will be used undiluted. Do not pre-wet the surface. Apply 2375 with acid brushes or low-pressure spray to the areas with contamination. Dwell times up to 24 hours may be required. In cold weather, move the equipment into a heated area during the dwell time. In certain cases, reapplication and an extended dwell time may be required. Rinsing may be done with hoses and stiff brushes or high pressure rinsing equipment. For some exceptionally heavy deposits, scrapping may be required.

This product must be used only as directed. Safety matters included with product. MSDS available from your regional representative.