Koch Chemie Prewash B – Powerful pre-wash for effective cleaning

Koch Chemie Prewash B – Powerful pre-wash for effective cleaning

Koch Chemie Prewash B (PB) is a strong, alkaline pre-wash specially developed to remove even the most stubborn dirt, traffic film, oil, grease, and insects from car surfaces. The product is primarily used as the first step in the washing process and is ideal for passenger cars, trucks, and commercial vehicles.

Its high cleaning power makes Prewash B a favorite choice among professional car washes and detailers, where efficiency and quick results are crucial. The product can be applied with a foam lance, pressure sprayer, or directly in pre-wash systems.

Benefits of Koch Chemie Prewash B:

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  Highly effective against traffic film, oil, grease, and insects.

  
  


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  Alkaline pre-wash – powerful cleaning even on heavily soiled surfaces.

  
  


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  Can be used on cars, trucks, and commercial vehicles.

  
  


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  Suitable for use with a foam lance, pre-wash system, or pressure sprayer.

  
  


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  High concentration – economical in use.

  
  

Mixing ratio and application:

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  As a pre-wash in a foam lance: approx. 1:30 to 1:50 depending on the degree of soiling.

  
  


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  For very heavy soiling: can be used stronger, e.g. 1:10 to 1:20.

  
  


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  Apply evenly over the entire vehicle, let it dwell for 2–3 minutes (do not allow to dry), then rinse thoroughly with a high-pressure cleaner.

  
  

👉 With Koch Chemie Prewash B, you get an extremely effective and reliable pre-wash that ensures even the dirtiest vehicles are ready for a gentle hand wash or automated wash.