Koch-Chemie Vorreiniger B Vb — High-Performance Alkaline Pre-Wash Cleaner

Koch-Chemie Vorreiniger B (Vb): High-Performance Alkaline Pre-Wash Cleaner

Koch-Chemie Vorreiniger B is a highly concentrated, phosphate-free and NTA-free alkaline pre-cleaner designed for cars, commercial vehicles, construction equipment, and engine bay degreasing. With an engineered blend of complexing agents and premium surfactants, Vb effortlessly strips stubborn insect debris, bird droppings, brake soot, road grime, and tree sap prior to manual washing.

1. Intended Purpose & Problem Solving

• Target Surfaces: Exterior vehicle body panels, wheel arches, engine compartments, commercial truck trailers, and gantry installations.
• Contaminants Removed: Insect proteins, bird lime, environmental road grime, oil, grease, and exhaust soot.
• VDA Compliance: VDA Class B compliant (max application concentration 1:100, max dwell time 1 minute on sensitive trim).

2. Key Features & Technical Advantages

• High Alkalinity (pH 13.1): Penetrates and breaks down stubborn oily and biological traffic residues instantly.
• Corrosion Inhibitors: Formulated with special anti-corrosion additives to protect vulnerable vehicle metals.
• Phosphate & NTA Free: Meets rigorous environmental and wastewater safety standards.

3. Application Guidelines & Dilution Ratios

• Pre-Sprayer (Low Pressure): 1:30 to 1:50 for general pre-cleaning; 1:5 to 1:10 for concentrated insect and wheel degreasing.
• Foam Cannon (Foam Lance): 1:10 to 1:20 in the bottle.
• Engine Bay Cleaning: 1:5 to 1:10.
• Protocol: Spray onto cool surface from bottom to top -> Dwell for 1–2 minutes -> Rinse thoroughly with high-pressure water.

4. Critical Caveats & Safety Instructions

• Material Warnings: Do not apply to unlacquered raw aluminum, hot surfaces, or in direct sunlight.
• Never Allow to Dry: Always rinse off before the product dries out.

5. Technical Specifications