Koch-Chemie PreWash Express is a fast-acting alkaline precleaner designed to remove insects, road film, oils and traffic dirt quickly and effectively before contact washing. pH 13.3 • 23L.
Removes heavy dirt and road grime
Helps loosen dirt before contact washing
Quick breakdown of contamination
Economical dilution ratio
Dilute 1:10 – 1:30
Apply from bottom upwards
Leave for 1–3 minutes
Rinse thoroughly with water
Highly concentrated, phosphate-free, high alkaline precleaner for prewashing cars and trucks. The combination of high-quality complexing agents and special surfactants dissolves even the most stubborn dirt such as insects, bird droppings, environmental and rim dirt extremely quickly and is therefore ideally suited in particular for carwashes with short reaction times (eg express washing systems) as well as alkaline washing bay cleaning. Optimally suited as well for biological service water treatment plants. VDA conform to class B: reaction time max. 1 min, max. application concentration 1:100
Depending on the dirt accumulation: precleaning: 1:30 to 1:100. Rim cleaning: 1:4 to 1:20. Apply over whole surface and after max. 1 min rinse off thoroughly with a high-pressure cleaner. Washing bay cleaning: 1:2 to 1:15. VDA conform to class B: reaction time max. 1 min, max. application concentration 1:100
Do not use on hot surfaces.;Do not let dry.;Before using, check suitability and compatibility.
This product information can advise you only without obligation. Liability on our part can not be derived. Please, check whether the product is suitable for your application. We will be pleased to assist you.
Yes, when diluted correctly and rinsed before drying.
Use stronger dilution for heavy contamination and lighter dilution for maintenance cleaning.
No. Do not allow the product to dry on the surface.
Fast acting and highly concentrated, Koch-Chemie PreWash Express removes insects, road film and traffic contamination safely before contact washing.