Koch-Chemie Multi-purpose cleaner "Mzr" universal cleaner 1000ml

Deep Cleaning Oil, Nicotine, and Grease with Koch-Chemie Multi-Purpose Cleaner Mzr

What is Koch-Chemie Multi-Purpose Cleaner Mzr? An alkaline intensive cleaner with pH 12.5 that chemically dissolves oils, greases, nicotine, soot, and discoloration on textiles, plastics, and industrial surfaces – dilutable as a concentrate from 1:5 to 1:50. Not suitable for soft-touch surfaces, leather, and painted surfaces.

Koch-Chemie Mzr is an alkaline cleaner concentrate from Koch-Chemie that chemically dissolves stubborn organic dirt from pores and fibers. The high pH value of 12.5 in the concentrate saponifies fats and oils through alkaline hydrolysis – a process that pH-neutral cleaners cannot chemically achieve. Diluted to 1:10, the pH value is around 11, which is sufficient for most vehicle interior surfaces. Koch-Chemie has given the cleaner an official Daimler approval, making it a standard product in detailing shops and workshops.

• Dilutable from 1:5 to 1:50 – a concentrate for every type of dirt. For heavy soiling such as engine oil or nicotine residue, use a 1:5 dilution. For regular interior cleaning, 1:20 to 1:50 is sufficient. 1 liter of concentrate yields 21 liters of working solution when diluted 1:20 – at a purchase price of €7.67, that's €0.37 per liter of ready-to-use cleaning solution.
• Dissolves what pH-neutral cleaners leave behind. Nicotine, greasy fingerprints on headliners, ingrained discoloration on light upholstery – these are the cases where Mzr truly shines. The alkaline formulation saponifies fatty acids and emulsifies oil residues, rather than just displacing them on the surface. Where a neutral all-purpose cleaner requires two passes, Mzr only needs one.
• Daimler approval for workshop use. The official approval confirms material compatibility on factory-installed textiles and plastics from Mercedes-Benz. Detailing shops, fleet managers, and independent workshops therefore use this cleaner as a standard interior cleaner – one concentrate for the entire vehicle fleet instead of multiple specialized products.

Practical tip from Detailing1: Never spray Mzr undiluted onto surfaces – pH 12.5 in the concentrate attacks sensitive plastics and pigments. Always dilute it in the spray bottle first and start with 1:10. If that's sufficient, reduce the dosage to 1:20 next time. The most common mistake in practice: working with too strong a concentration and then getting white spots on dark plastics because the alkalinity attacks the surface structure. Two passes with 1:10 will produce a better and more even result than one pass with 1:5.

1:10 on the headliner. 1:50 on the door handle.

Koch-Chemie Mzr works as a concentrate that you dilute individually for each application. This fundamentally distinguishes it from ready-to-use interior cleaners like the Koch-Chemie MultiInteriorCleaner, which come with a fixed, unchangeable concentration.

For headliners with nicotine residue or discolored fabric upholstery, use a 1:5 to 1:10 dilution. Spray the solution evenly, let it work for 1-3 minutes, and then work it in with a soft detailing brush in circular motions. Mzr chemically dissolves the dirt, and the brush transports it out of the fibers. Afterwards, remove the dissolved dirt with a clean microfiber cloth or a wet vacuum cleaner. For headliners, a wet vacuum cleaner is mandatory – too much standing moisture can loosen the textile adhesive and cause the headliner to detach.

For everyday interior cleaning – dashboard, center console, door panels – a dilution of 1:20 to 1:50 is sufficient. At this concentration, Mzr is gentle enough for most hard plastics. The surface becomes clean without leaving a greasy film.

Afterwards, you can directly apply a plastic dressing – Mzr leaves no residue that would prevent adhesion. This makes it ideal for pre-cleaning before care steps. Nevertheless: On steering wheels with soft-touch coating and rubberized grips, even the weakest dilution is risky. In these cases, it is better to use a pH-neutral cleaner.

Mzr also demonstrates its versatility outside the vehicle: workshop floors with oil stains, dirty industrial machinery, discolored RV paneling. For outdoor use, dilute 1:5 to 1:10 and let it sit for 3-5 minutes. Work it in with a high-pressure cleaner or a brush, then rinse off.

A detail that Koch-Chemie doesn't mention on the product page: Mzr leaves a pleasant, subtle scent on cleaned surfaces. Not an artificial air freshener, but significantly less chemical than comparable industrial cleaners. In smoker's cars, this does not cover the nicotine smell – but after cleaning, the interior smells neutral instead of chemical. This may sound like a side effect, but it is relevant in practice if you are preparing vehicles for sale or return.

Koch-Chemie Mzr dissolves nicotine residue. It attacks leather.

Organic contamination is the core area of Koch-Chemie Mzr: greasy fingerprints, nicotine film, soot, ink stains, and the typical discoloration on light upholstery after two years of everyday use. Here, the alkaline formulation works reliably and in one pass.

The color change from clean to dirty is immediately visible with Mzr – the microfiber cloth clearly shows what the cleaner has removed from the surface after wiping. Especially impressive on discolored, light fabric upholstery: the first wipe often shows two shades of difference. This is not marketing exaggeration, but the chemical effect of alkaline saponification, which dissolves deep-seated grease contamination that a neutral cleaner cannot reach.

Koch-Chemie deliberately positions Mzr as a multi-purpose cleaner for cars, industry, and building cleaning. The container sizes demonstrate this: in addition to the 1-liter bottle, there are 11 kg, 21 kg, and 225 kg containers. This is a workshop cleaner that also works in vehicle interiors. This origin explains its strength: Mzr is formulated for industrial contamination and brings that power to the vehicle interior.

Where Mzr is not the right product: On genuine leather and artificial leather with an open-pore structure, the alkalinity can dry out the surface and leave discoloration. Leather requires a pH-adjusted leather cleaner. On soft-touch plastics and rubberized surfaces such as steering wheels or gear knobs, it leaves dull spots. An alkaline cleaner has no place on painted or foiled surfaces – even diluted to 1:50, the pH value is above 9. If you need a universal cleaner without risk for sensitive materials, Koch-Chemie ASC is the safer choice – pre-mixed, pH-neutral, for all surfaces.

One canister of Koch-Chemie Mzr. 200 liters of working solution.

Koch-Chemie Mzr pays off through its yield. 1 liter of concentrate, diluted 1:20, yields 21 liters of ready-to-use solution – enough for 15-20 complete interior cleanings. At €7.67 per liter, you're looking at under €0.50 per vehicle. For those who detail regularly, the 11 kg canister is the choice: at €77.75, that's €7.07 per kilogram and around 200 liters of working solution at a 1:20 dilution.

Mzr is aimed at detailers, workshops, and ambitious hobbyists who want a concentrate instead of pre-mixed spray bottles. If you only occasionally clean the interior and don't want to bother with dilution, use the MultiInteriorCleaner as a ready-to-use solution. If you want to dose flexibly – stronger for a smoker's car interior, weaker for weekly maintenance – Mzr is the more economical choice.

For daily work in the workshop, we recommend the Koch-Chemie dispensing tap on the 11 kg canister: dispense concentrate into the spray bottle, fill with water, done. The 1-liter bottle is suitable for mobile use and the detailing box. Store both containers frost-free between 5 and 30 °C; the concentrate lasts 24 months unopened. Use diluted solution within 4 weeks.

A safety note at the end: Mzr is classified as corrosive (H314) and bears the signal word "Danger". Always wear protective gloves and safety goggles when using the concentrate. In the usual working dilution of 1:10 to 1:20, the risk is significantly lower, but prolonged skin contact should still be avoided. The safety data sheet can be downloaded from the product page.

In summary: Koch-Chemie Mzr is not an everyday cleaner for a quick wipe. It is a tool for detailing where deep cleaning is required – smoker's cars, used car detailing, workshop floors, industrial machinery. Those who have these use cases and are willing to deal with dilution and protective equipment will get a concentrate that is hard to beat at costs under €0.50 per vehicle.

Application of Koch-Chemie Multi-Purpose Cleaner Mzr

From concentrate to clean surface in three steps

First, mix the dilution: fill water into the spray bottle, then add the Mzr concentrate. For stubborn dirt (nicotine, grease, soot) dilute 1:5 to 1:10. For regular cleaning of plastic and textiles, 1:20 to 1:50 is sufficient. For exterior cleaning of RVs, commercial vehicles, or workshop floors, use 1:5 to 1:10 and allow 3–5 minutes of dwell time.

Spray the solution evenly onto the dirty surface and let it sit for 1–3 minutes. For textiles and upholstery, work in circular motions with a soft brush – the Mzr loosens the dirt, and the mechanical motion removes it. For hard plastics, a microfiber cloth is sufficient. Afterward, wipe off any residue with a clean, damp cloth or, even better, vacuum with a wet vacuum cleaner.

For headliners, apply sparingly and never soak. The textile over the adhesive cannot tolerate standing moisture. Spray, brush briefly, and vacuum immediately. One pass is sufficient for slight discoloration. For nicotine deposits, it's better to do two passes rather than use a higher concentration – this protects the material and results in a more even finish.

Notes: Never use undiluted – pH 12.5 in the concentrate corrodes sensitive surfaces. Do not use on genuine leather, soft-touch plastics, rubberized handles, or painted surfaces. Avoid skin contact with the concentrate, wear protective gloves (H314: Causes severe skin burns). In case of contact with eyes, rinse immediately with water for 15 minutes. Store frost-free between 5 and 30 °C, use within 24 months after opening. Use diluted solution within 4 weeks.