Alkaline Pre-Wash Concentrate 1L, Koch Chemie

Quick Facts – Koch Chemie VB Vorreiniger B Pre-Wash

• Brand: Koch Chemie
• Type: Alkaline pre-wash cleaner
• Volume: 1 litre
• Phosphate-free: Yes
• Dilution – pre-wash: 1:30 – 1:50
• Dilution – wheel cleaning: 1:3 – 1:10
• Dilution – pressure washing: 1:300
• VDA class: A and B

Koch Chemie VB Vorreiniger B is a strongly concentrated, phosphate-free, alkaline pre-wash cleaner developed for professional use on passenger cars and lorries. The product effectively dissolves stubborn contaminants such as insect residue, bird droppings, road grime, and brake dust even with short contact times.

The combination of high-grade complexing agents and specialised surfactants allows Koch Chemie VB Vorreiniger B to work quickly and thoroughly, even on heavily soiled surfaces. The product is also suitable for removing copolymer Sealant, contributing to a clean surface prior to subsequent treatment.

Special corrosion inhibitors protect sensitive materials such as anodised aluminium, making Koch Chemie VB Vorreiniger B a reliable choice for vehicles with mixed surface materials. See more Koch Chemie products for car care in our range.

What is Koch Chemie VB Vorreiniger B and why choose it?

Koch Chemie VB Vorreiniger B is an alkaline pre-wash cleaner intended for the first step in a professional washing process. The product is phosphate-free and heavily foaming, providing good coverage and effective breakdown of organic and inorganic contaminants without damaging the paintwork or sensitive surface materials.

Thanks to the wide dilution range – from 1:3 for intensive wheel cleaning up to 1:300 for self-service pressure wash facilities – Koch Chemie VB Vorreiniger B is suited to everything from manual pre-washing to fully automated car wash installations. The product meets VDA standards for class A and class B, which is a requirement in many professional washing environments.

Where is this product suitable?

• Professional car wash installations with high throughput
• Touchless high-pressure wash systems
• Reconditioning workshops and detailing studios
• Manual pre-washing with a foam cannon or spray gun
• Wheel cleaning on passenger cars and lorries
• Removal of copolymer Sealant prior to new surface treatment

Technical Specifications

Suitable for: Professional detailers, reconditioning workshops, high-throughput car wash installations, touchless high-pressure wash systems, and detailing enthusiasts seeking an effective and versatile pre-wash cleaner.

Industries: Detailing, car care, vehicle reconditioning, car wash industry, commercial transport, and lorry washing. See more pre-wash products in our range.

Frequently Asked Questions (FAQ)

Does Koch Chemie VB Vorreiniger B work for removing insect residue and bird droppings?

Yes. Koch Chemie VB Vorreiniger B is formulated specifically to dissolve such organic contaminants. The product's alkaline formulation and specialised surfactants break down insect residue, bird droppings, and road grime effectively. Apply diluted at 1:30–1:50 across the entire surface, allow a short dwell time, and then rinse thoroughly with a pressure washer.

What volume and dilution ratios apply to Koch Chemie VB Vorreiniger B?

Koch Chemie VB Vorreiniger B is supplied in a 1-litre container. Dilution ratios vary depending on the application: pre-wash 1:30–1:50, wheel cleaning 1:3–1:10, Sealant removal 1:5–1:10, and self-service pressure washing 1:300. The product meets VDA standards for class A (max contact time 5 minutes, max dilution 1:300) and class B (max contact time 1 minute, max dilution 1:30).

What sets Koch Chemie VB Vorreiniger B apart from other pre-wash cleaners on the market?

Koch Chemie VB Vorreiniger B combines a wide dilution range with VDA certification and a phosphate-free formulation, which is uncommon in a single product. Unlike many simpler pre-wash cleaners, Koch Chemie VB Vorreiniger B contains corrosion inhibitors that protect sensitive materials such as anodised aluminium. The product is also approved for use in biological treatment plants, which simplifies wastewater management in professional wash installations.