Koch Chemie
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Koch-Chemie is a German chemical manufacturer that has been making surface-care since 1968, and it's the brand professional bodyshops and OEM lines reach for when the result has to be repeatable. Alpha Details stocks the detailing range and uses it daily — here's how to navigate it.
Why detailers trust Koch-Chemie
The chemistry is dialled for the job. Koch names its pH and keeps it honest: GSF Gentle Snow Foam is a coating-safe pH 7.5 neutral pre-wash, while AF Active Foam steps up to a pH 9.5 mild alkaline foam that's still phosphate- and NTA-free. You pick the aggression the car needs, not the one the label shouts.
Low-dust, silicone-free polishing. The H- and B-series compounds are built for machine correction bodyshops can trust — H9.01 / H9.02 heavy cut and the silicone-free B9.01 strong compound cut hard and finish cleaner than most single-steps.
Where to start
Wash & pre-wash. GSF for coated cars, AF when it's genuinely dirty, and CES Ceramic Effect Shampoo when you want protection topped up during the wash.
Decontamination. ReactiveWheelCleaner is an acid-free iron remover that bleeds purple as it dissolves brake-dust fallout — safe on every wheel finish — and Reactive Rust Remover does the same job on paint. Follow with the RKR / RKB clay bars.
Finishing & protection. Quick & Shine (QS) is the Daimler-approved lotus-effect quick detailer, and SO.02 Spray Sealant or the S0.03 Hydro Foam Sealant lay down fast, durable hydrophobic protection.
The problem-solvers. Eulex (EU) lifts glue, tar and tree sap without leaving a halo; Motorplast dresses and protects the engine bay. These are the bottles that quietly earn their shelf space.
A chemist's note
Paolo has a chemistry degree, so we lead with the numbers Koch actually publishes — the pH of each pre-wash, whether a compound is silicone-free, which detailer carries an OEM approval — rather than vague "German quality" claims. Tell us the surface and the problem and we'll match the exact Koch product to it.
