Koch-Chemie PreWash B — highly alkaline pre-cleaner, 23 kg

About the product

Koch-Chemie PreWash B is a highly concentrated, phosphate-free alkaline pre-cleaner for cars, commercial vehicles and construction machines. It removes road film and heavy dirt from suitable exterior surfaces, steel rims, painted alkali-resistant aluminium and washing-bay floors or walls.

Confirmed specification

• Official 23 kg article 313023.
• Precleaning 1:30–1:100; rim cleaning 1:4–1:20; washing-bay cleaning 1:2–1:15.
• VDA class B: maximum 1 minute at 1:100; suitable for full-surface pressure-rinse workflows.

Application

1. Dilute according to the task and apply over the complete surface.
2. Allow the product to work for a short time, never longer than the documented maximum.
3. Pressure-rinse thoroughly before the product dries.

Important

Do not use on hot surfaces and do not allow the cleaner to dry. Check material compatibility and observe local wastewater requirements.