Koch Chemie Pre-Cleaner B - Alkaline pre-wash (1 L)

KOCH CHEMIE VORREINIGER B

ACTIVE FOAM AKA STRONG PRE-WASH AND TOUCHLESS WASH PRODUCT

If you're wondering how to properly wash a car without scratching the paint, it always starts with one step – a quality car pre-wash. Koch Chemie Vorreiniger B is a powerful pre-wash product that removes most dirt before you even touch the car with a wash mitt.

And that's precisely the point. The more dirt you remove without contact, the less chance of scratches in the paint.

This alkaline cleaner with a pH of 13 works as an active foam for cars and an insect remover in one step. It dissolves grease, road film, insect residues, and other grime from traffic that otherwise clings to the paint.

It is used in detailing studios as well as by people who want to have car washing under control and do it correctly.

WHAT CAN YOU REALLY EXPECT FROM IT?

• Significantly simplifies car washing – removes most dirt without contact
• Strong effect on insects, grease, and road grime
• Works as active foam and pre-wash in one
• Helps prevent scratches during hand washing
• Suitable for bodywork, wheels, and other car parts
• Thanks to its concentration, it lasts a really long time

HOW TO USE IT EFFECTIVELY

Usage is simple, but it has its rules:

1. Apply to a dry car (ideally in the shade and on cool paint)
2. Apply using a hand foamer or a pressure washer foamer
3. Leave on briefly (approx. up to 1 minute)
4. Do not let it dry – this is crucial
5. Rinse thoroughly with pressurized water
6. Continue with hand washing (shampoo + mitt)

RECOMMENDED DILUTION

• Bodywork pre-wash (solution): 1:30 – 1:50
• Wheel cleaning: 1:3 – 1:10
• Foamer (touchless wash): 1:1 – 1:2

WHY DOES THIS PRODUCT MAKE SENSE?

Because car washing isn't just about shampoo. If you skip pre-washing, you're dragging dirt across the paint and creating micro-scratches.

With Vorreiniger B:

• you remove maximum dirt without contact
• you speed up the entire washing process
• and most importantly, you protect the paint

WHAT TO WATCH OUT FOR

• Do not use on hot paint or in direct sunlight
• Never let it dry on the surface
• Adhere to the dilution ratio – it's a concentrate
• Before first use, test on a less visible area

Koch Chemie Vorreiniger B is exactly the type of product that makes the difference between "washed" and properly washed. If you want scratch-free paint and control over your washing, you simply cannot skip this step.