{"title":"Sprühextraktionsreiniger-Konzentrat","description":"\u003ch2 id=\"speakable-headline\"\u003eSprühextraktionsreiniger-Konzentrat\u003c\/h2\u003e\n\u003cp id=\"speakable-definition\"\u003e\u003cstrong\u003eSprühextraktionsreiniger-Konzentrat\u003c\/strong\u003e: Textilreiniger lösen Verschmutzungen in Polstern und Teppichen. Das Konzentrat wird für die vorgesehene Anwendung nach Produktvorgabe verdünnt; Gebindeinhalt und daraus angesetzte Arbeitslösung sind unterschiedliche Mengen.\u003c\/p\u003e\n\u003cp\u003eDie Faserart entscheidet mit; Alcantara wird nicht automatisch mit jedem Polsterreiniger behandelt.\u003c\/p\u003e","products":[{"product_id":"koch-chemie-green-star-gs-universalreiniger","title":"Green Star \"Gs\" Universal Cleaner","description":"\u003ch2 id=\"speakable-headline\"\u003eWorkshop chemistry for engine bay, floor and lift with Koch-Chemie Green Star\u003c\/h2\u003e\n\n\u003cblockquote id=\"speakable-summary\"\u003e\n  \u003cp\u003e\u003cem\u003eWhat is the Koch-Chemie Green Star? A high-alkaline APC concentrate at pH 13 that lifts oil, grease and lubricants off workshop floors, out of the engine bay and off the lift in one pass. Not for pH-neutral coatings, synthetic-leather dashboards or anodised aluminium parts without a test patch first.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\n\u003chr\u003e\n\n\u003cp id=\"speakable-definition\"\u003eThe \u003cstrong\u003eKoch-Chemie Green Star Universal Cleaner\u003c\/strong\u003e works through a mix of surfactants, alkaline builders and corrosion inhibitors. With a pH between 12.5 and 13 it saponifies organic dirt — oil, grease, wax — turning it into soap compounds you can rinse off.\u003c\/p\u003e\n\n\u003cp\u003eThe surfactant shell then holds the loosened dirt in suspension so it doesn't dry back onto the panel when you rinse. That's why Green Star is the go-to APC in plenty of workshops and detailing shops that want a single cleaner for the engine bay, the lift, the workshop floor and exterior plastics — not because it's the best at any one of them, but because it hits the right balance between cleaning punch and material safety across that whole bracket.\u003c\/p\u003e\n\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0800\/3272\/7375\/files\/d1_koch-chemie-green-star-gs-universalreiniger_hero.png?v=1775995591\" alt=\"Koch-Chemie Green Star Gs bottle and canister on a concrete wall in front of a white Ferrari 296 GTB\" loading=\"lazy\" width=\"1200\"\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOne chemistry, four dilutions.\u003c\/strong\u003e The mix ratio decides the job: 1:5 for the workshop floor and heavily oiled engine bays, 1:10 as a wheel pre-cleaner and bug remover, 1:20 for exterior plastics and rubber care, 1:50 for routine maintenance cleans in the customer reception. An 11-kilo canister replaces three separate cleaners for roughly six months in a two-lift shop.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePhosphate- and solvent-free, with a corrosion inhibitor.\u003c\/strong\u003e The formula skips NTA, phosphates and solvents and carries an aluminium corrosion inhibitor. That's why you can lay Green Star down on painted aluminium, steel and most plastics without worrying — but only when you respect the dilution. Used neat the inhibitor stops being protection and starts being a softening zone, especially on anodised aluminium.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOil-carrying capacity right into the pore structure.\u003c\/strong\u003e On a one-year-old workshop floor with lube and gear oil soaked in, 1:5 Green Star pulls the top layer of dirt fully after three minutes of dwell — and brings part of the oil sitting in the concrete pores back to the surface. A second pass lifts the residual dirt that was still in the pore bed. You won't get there mechanically with a pH-neutral interior cleaner.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003cblockquote class=\"praxistipp\"\u003e\n  \u003cp\u003e\u003cstrong\u003eDetailing1's tip from the shop:\u003c\/strong\u003e Never hit warm or sun-heated surfaces — once an engine block is past about 40 °C the alkaline solution flashes off and leaves water marks and limescale rings on painted covers. Engine-bay sequence: let the vehicle cool, mask intake and electronics, work bottom-up at 1:10, give it three minutes max, then rinse generously with a soft jet from the \u003ca href=\"\/en\/collections\/universalreiniger\"\u003euniversal cleaner\u003c\/a\u003e group. For repeat jobs grab a foam sprayer — it lays the 1:10 solution down more evenly than any hand pump and buys you 40 to 60 extra seconds of dwell on vertical surfaces.\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003e1 to 5. 1 to 20. One canister, four jobs.\u003c\/h3\u003e\n\u003cp\u003eWith the Koch-Chemie Green Star Universal Cleaner the cleaning power isn't in the bottle, it's in the mix ratio. Skip the difference and you'll either clean too soft or wreck the material.\u003c\/p\u003e\n\n\u003cp\u003eFor the workshop floor you mix 1:5 in warm water, lay it down with a scrubber or single-disc machine, give it three minutes and pick it up with a wet vac. For the lift and the engine bay 1:10 is the safe standard: it lifts oil reliably without going at rubber steering boots or wiring-loom sheaths. For exterior plastics, trim and badly soiled wheel arches 1:20 is enough. The 1:50 dilution is for routine maintenance cleans in customer reception or on tiled floors — at that point you're past \"APC\" and into a mild alkaline cleaner with residual grease-cutting power.\u003c\/p\u003e\n\n\u003cp\u003eThe mistake shops almost always make with Green Star is the same one: too strong a mix, because \"stronger is better\" is stuck in the head. In practice 1:5 on an engine block gives you no measurable edge over 1:10 — what you get instead is higher chemical burn and the risk of overloading the corrosion inhibitor on aluminium. The real lever is dwell time: three minutes instead of two. Two passes instead of one. Never crank the concentration if the first pass came up short.\u003c\/p\u003e\n\n\u003cp\u003eTwo practical dosing workflows hold up day to day. Workflow one: canister straight onto a dosing station at the water tap, ratio set through the Venturi nozzle, application by foam sprayer or pressure sprayer. Workflow two for smaller shops: two labelled 500-millilitre spray bottles, one with the 1:10 mix for engine bay and wheel arch, one with 1:20 for exterior plastics. Mix both fresh every day — alkaline working solutions lose cleaning power inside 24 hours because CO₂ from the air slowly drops the pH.\u003c\/p\u003e\n\n\u003cp\u003eAn 11-kilo canister at a properly mixed 1:10 covers about 110 litres of working solution — that's roughly 40 engine-bay cleans or 15 workshop-floor passes over 100 square metres. For shops running two lifts and regular detailing the 22-kilo or 225-kilo drum pays off from three cleans a week, purely on the per-kilo price difference.\u003c\/p\u003e\n\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0800\/3272\/7375\/files\/d1_koch-chemie-green-star-gs-universalreiniger_closeup.png?v=1775995596\" alt=\"Koch-Chemie Green Star Gs label close-up with the pH 12.5 marking visible\" loading=\"lazy\" width=\"1200\"\u003e\u003c\/p\u003e\n\n\u003ch3\u003eAlkaline. But not for everything.\u003c\/h3\u003e\n\u003cp\u003eThe Koch-Chemie Green Star Universal Cleaner has workshop DNA — it's not the right chemistry for delicate interior or coating surfaces.\u003c\/p\u003e\n\n\u003cp\u003eIt punches above its weight wherever organic dirt dominates: engine oil, gear oil, grease mist in the bay, soot on the workshop floor, brake-dust\/grease mixes in the wheel arches, road grime on commercial-vehicle frames. Bugs and bird droppings also soak off well with the 1:10 dilution before the actual wash. The alkaline pH saponifies the protein and turns a baked-on crust into a layer you can pull off — exactly where pH-neutral products would need you to scrub.\u003c\/p\u003e\n\n\u003cp\u003eWhere Green Star runs out of road is where the pH becomes the problem. On ceramic-coated paint every pass shaves a bit off the top bonding layer of the coating — for coating-sealed cars a pH-neutral shampoo or the Koch-Chemie \u003ca href=\"\/en\/products\/koch-chemie-mehrzweckreiniger-mzr-universalreiniger\"\u003eMultipurpose Cleaner \"Mzr\"\u003c\/a\u003e is the call.\u003c\/p\u003e\n\n\u003cp\u003eAnodised aluminium, matte aluminium and polished metal you never treat neat and you always patch-test in a hidden spot first. The corrosion inhibitor protects painted aluminium reliably, but on anodised surfaces it starts to struggle. Same goes for non-anodised magnesium rims and race parts — the alkaline side bites into the surface as soon as you push the dwell past two minutes.\u003c\/p\u003e\n\n\u003cp\u003eInside the cabin Green Star is plainly too aggressive: synthetic leather, Alcantara and coated dashboards don't take alkaline concentrates long-term, not even at 1:50. If you want one cleaner for both workshop and interior, that's a different chemistry.\u003c\/p\u003e\n\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0800\/3272\/7375\/files\/d1_koch-chemie-green-star-gs-universalreiniger_ergebnis.png?v=1775995602\" alt=\"Freshly cleaned Ferrari engine bay after a Koch-Chemie Green Star pass\" loading=\"lazy\" width=\"1200\"\u003e\u003c\/p\u003e\n\n\u003ch3\u003eGreen Star, Gs9 or Mzr. Your decision tree.\u003c\/h3\u003e\n\u003cp\u003eKoch-Chemie has three universal cleaners with overlapping use cases — the choice isn't about price, it's about what you're cleaning.\u003c\/p\u003e\n\n\u003cp\u003eThe classic Green Star is the workshop pick: hard-alkaline, high oil-carrying capacity, built for tough exterior and underbody work. The \u003ca href=\"\/en\/products\/koch-chemie-green-star-96-gs9-universalreiniger\"\u003eGreen Star 96 \"Gs9\"\u003c\/a\u003e is the milder follow-up with an optimised surfactant base and lower environmental load — it doesn't replace the classic Gs, it sits alongside it for detailers who work more often on private-customer cars with coatings and less on commercial frames. The Multipurpose Cleaner \"Mzr\" runs on completely different chemistry: weakly alkaline through to pH-neutral, built for interior, dashboards, carpets and upholstery. Gs cleans the engine bay, Mzr cleans the seats after.\u003c\/p\u003e\n\n\u003cp\u003ePractical rule for the buy decision: if the focus is the lift, the engine bay, the workshop floor and commercial-vehicle work, grab the classic Green Star in 11 or 22 kilos. If you mostly detail private-customer cars with ceramic protection and need the APC for wheel arches, bug removal and exterior plastics, the Gs9 is the cleaner fit. If you're after a cleaner for interior, carpet and upholstery, neither Gs nor Gs9 is the right answer — that's where the Mzr lives.\u003c\/p\u003e\n\n\u003cp\u003eFor the typical one-man detailer with a mixed customer base, the 11-kilo Green Star plus a 1-litre Mzr covers most of the actual workload: Gs for the whole exterior, the engine bay and floor cleans, Mzr for the interior. If you've got three separate APCs on the shelf — workshop cleaner, wheel cleaner, interior cleaner — this two-product setup halves the chemical cabinet and still cleans tighter.\u003c\/p\u003e\n\n\u003cp\u003ePack size tracks monthly throughput. The 1000-millilitre spray head is for the home detailer and the first test drive, not a working shop. From one vehicle a week with a proper exterior wash the 5-litre canister pays off; from three vehicles the 11-kilo container. 22 and 225 kilos belong in shops with a dosing station and steady commercial-vehicle work — for smaller outfits they're an unnecessary lock-in to one chemistry and harder to handle.\u003c\/p\u003e\n\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0800\/3272\/7375\/files\/d1_koch-chemie-green-star-gs-universalreiniger_detail.png?v=1775995607\" alt=\"Green Star working solution on the black plastic wheel arch of the Ferrari\" loading=\"lazy\" width=\"1200\"\u003e\u003c\/p\u003e","brand":"Koch-Chemie","offers":[{"title":"1000 ml \/ 1 liter","offer_id":48494630109519,"sku":"D1-KCX-291001","price":6.99,"currency_code":"EUR","in_stock":true},{"title":"2x 1000ml","offer_id":48725287960911,"sku":"D1-KCX-68037_2","price":13.7,"currency_code":"EUR","in_stock":true},{"title":"3x 1000ml","offer_id":48725287993679,"sku":"D1-KCX-68037_3","price":20.34,"currency_code":"EUR","in_stock":true},{"title":"5 liters","offer_id":48762352468303,"sku":"D1-KCX-291005","price":29.99,"currency_code":"EUR","in_stock":true},{"title":"11kg","offer_id":48494630142287,"sku":"D1-KCX-291011","price":56.49,"currency_code":"EUR","in_stock":true},{"title":"22kg","offer_id":49094546522447,"sku":"D1-KCX-291022","price":107.49,"currency_code":"EUR","in_stock":true},{"title":"225kg","offer_id":49094546555215,"sku":"D1-KCX-291225","price":1134.99,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/3272\/7375\/files\/koch-chemie-green-star-universalreiniger.jpg?v=1710769279"},{"product_id":"koch-chemie-mehrzweckreiniger-mzr-universalreiniger","title":"Multi-Purpose Cleaner \"Mzr\" All-Purpose Cleaner","description":"\u003ch2 id=\"speakable-headline\"\u003ePull oil, nicotine and grease out of the pores with Koch-Chemie Multi-Purpose Cleaner Mzr\u003c\/h2\u003e\n\n\u003cblockquote id=\"speakable-summary\"\u003e\n  \u003cp\u003e\u003cem\u003eWhat is Koch-Chemie Multi-Purpose Cleaner Mzr? An alkaline heavy-duty cleaner with pH 12.5 that breaks down oils, grease, nicotine, soot and grey ingrained dirt on fabric, plastics and industrial surfaces — a concentrate you dilute anywhere from 1:5 to 1:50. Keep it off soft-touch surfaces, leather and painted panels.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\n\u003chr\u003e\n\n\u003cp id=\"speakable-definition\"\u003e\u003cstrong\u003eKoch-Chemie Mzr\u003c\/strong\u003e is an alkaline cleaner concentrate from Koch-Chemie that chemically lifts stubborn organic dirt out of pores and fibres. The pH of 12.5 in the concentrate saponifies fats and oils through alkaline hydrolysis — something pH-neutral cleaners simply can't do chemically. Dilute it 1:10 and you sit around pH 11, which is plenty for most interior surfaces in the car. Koch-Chemie has it under an official Daimler approval, which is why detail shops and workshops keep it on the shelf as a default.\u003c\/p\u003e\n\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0800\/3272\/7375\/files\/d1_koch-chemie-mehrzweckreiniger-mzr-universalreiniger_hero.png?v=1776196784\" alt=\"Koch-Chemie Mzr 1L bottle next to the open door of a black Mercedes-AMG GT in the warehouse bay\" width=\"900\" loading=\"lazy\"\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDilute from 1:5 to 1:50 — one concentrate for any kind of dirt.\u003c\/strong\u003e For heavy jobs like motor oil or nicotine films you work at 1:5. For everyday interior cleaning 1:20 to 1:50 is plenty. One litre of concentrate at 1:20 makes 21 litres of working solution — at €7.67 a litre that's €0.37 per litre of ready-to-use cleaner.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCuts through what pH-neutral cleaners leave behind.\u003c\/strong\u003e Nicotine, greasy fingers on headliners, ingrained grey on light fabric seats — these are the jobs where the Mzr earns its keep. The alkaline formula saponifies fatty acids and emulsifies oil residue rather than just pushing them around the surface. Where a neutral \u003ca href=\"\/en\/products\/koch-chemie-allround-surface-cleaner-asc-allzweckreiniger\"\u003eall-purpose cleaner\u003c\/a\u003e needs two passes, the Mzr does it in one.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDaimler approval for workshop use.\u003c\/strong\u003e The official approval confirms material compatibility on Mercedes-Benz factory fabrics and plastics. Detail shops, fleet managers and independent workshops keep it as their standard interior cleaner — one concentrate for the whole fleet instead of a shelf full of specialty bottles.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003cblockquote class=\"praxistipp\"\u003e\n  \u003cp\u003e\u003cstrong\u003eDetailing1's tip from the shop:\u003c\/strong\u003e Never spray the Mzr neat onto a surface — pH 12.5 in the concentrate attacks soft plastics and pigments. Always dilute in the bottle first and start at 1:10. If that does the job, dial down to 1:20 next time. The most common mistake we see day-to-day: people run the dilution too strong and end up with white patches on dark plastics because the alkalinity has attacked the surface. Two passes at 1:10 give you a better, more even result than one pass at 1:5.\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003e1:10 on the headliner. 1:50 on the door handle.\u003c\/h3\u003e\n\u003cp\u003eKoch-Chemie Mzr works as a concentrate that you dilute fresh for every job. That sets it apart from ready-mixed \u003cstrong\u003einterior all-purpose cleaners\u003c\/strong\u003e like the \u003ca href=\"\/en\/products\/koch-chemie-multi-interior-cleaner-innenraumreiniger-750ml\"\u003eKoch-Chemie MultiInteriorCleaner\u003c\/a\u003e, which come at a fixed strength you can't change.\u003c\/p\u003e\n\n\u003cp\u003eFor a nicotine-stained headliner or greyed fabric seats you work at 1:5 to 1:10. Spray it on evenly, let it dwell for 1–3 minutes, then work it in with a soft detailing brush in circles. The Mzr lifts the dirt chemically, the brush pulls it out of the fibres. After that you extract the dissolved soil with a clean microfibre or a wet vac. On headliners the wet vac is non-negotiable — too much standing moisture softens the textile glue and the headliner starts to sag.\u003c\/p\u003e\n\n\u003cp\u003eFor everyday interior cleaning — dash, centre console, door cards — 1:20 to 1:50 is enough. At that strength the Mzr is gentle enough for most hard plastics. The surface comes out clean and there's no greasy film left behind.\u003c\/p\u003e\n\n\u003cp\u003eRight after that you can lay down a plastic dressing — the Mzr leaves no residue that would block adhesion. That's what makes it the go-to prep step before any dressing. Still: on soft-touch steering wheels and rubberised grips even the weakest dilution is a gamble. Grab a pH-neutral cleaner for those.\u003c\/p\u003e\n\n\u003cp\u003eOutside the cabin the Mzr earns its name too: workshop floors with oil stains, grimy industrial machines, weathered motorhome trim. For outdoor use go 1:5 to 1:10 and let it dwell 3–5 minutes. Hit it with a pressure washer or a brush, then rinse off.\u003c\/p\u003e\n\n\u003cp\u003eOne detail Koch-Chemie doesn't flag on the product page: the Mzr leaves a subtle, clean scent on the surfaces it cleans. Not an artificial air freshener — just noticeably less chemical than comparable industrial cleaners. In a smoker's car it won't mask the nicotine smell, but after the clean the cabin smells neutral instead of like cleaning chemicals. Sounds like a side-effect, but in the bay it matters when you're prepping cars for resale or hand-back.\u003c\/p\u003e\n\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0800\/3272\/7375\/files\/d1_koch-chemie-mehrzweckreiniger-mzr-universalreiniger_anwendung.png?v=1776198150\" alt=\"Headliner cleaning with diluted Koch-Chemie Mzr from an iK Multi TR 1 spray bottle in a Mercedes-AMG GT\" width=\"900\" loading=\"lazy\"\u003e\n\n\u003ch3\u003eKoch-Chemie Mzr lifts nicotine films. Leather, it attacks.\u003c\/h3\u003e\n\u003cp\u003eOrganic dirt is the home turf of Koch-Chemie Mzr: greasy fingerprints, nicotine films, soot, ink stains and that typical grey ingrained look on light upholstery after two years of daily use. The alkaline formula handles those in one pass.\u003c\/p\u003e\n\n\u003cp\u003eThe colour shift from clean to dirty is instant on the Mzr — the microfibre after a wipe shows exactly what came out of the surface. Most dramatic on greyed light fabric seats: the first pass often pulls two shades of difference out. That's not a marketing line — it's the chemical effect of alkaline saponification breaking down the deep-set fat soiling that a neutral cleaner can't reach.\u003c\/p\u003e\n\n\u003cp\u003eKoch-Chemie positions the Mzr as an \u003cstrong\u003einterior all-purpose cleaner\u003c\/strong\u003e for cars, industry and building maintenance. The pack sizes tell you the same story: the 1-litre bottle sits next to 11 kg, 21 kg and 225 kg drums. This is a workshop cleaner that also works in the car interior. That origin is where the strength comes from — the Mzr is formulated for industrial grime, and that power follows it into the cabin.\u003c\/p\u003e\n\n\u003cp\u003eWhere the Mzr isn't the right tool: on genuine and synthetic leather with open-pore structure the alkalinity can dry out the surface and leave discolouration. Leather wants a pH-adjusted leather cleaner. On soft-touch plastics and rubberised surfaces like steering wheels or shift knobs it leaves dull patches. On painted or wrapped panels an alkaline cleaner has no business at all — even diluted 1:50, the pH still sits above 9. When you need an \u003ca href=\"\/en\/collections\/universalreiniger\"\u003eall-purpose cleaner\u003c\/a\u003e with no risk for sensitive materials, the Koch-Chemie ASC is the safer pick — ready-mixed, pH-neutral, surface-agnostic.\u003c\/p\u003e\n\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0800\/3272\/7375\/files\/d1_koch-chemie-mehrzweckreiniger-mzr-universalreiniger_ergebnis.png?v=1776196797\" alt=\"Headliner before and after cleaning with Koch-Chemie Mzr – nicotine grey on the left, deep black alcantara on the right\" width=\"900\" loading=\"lazy\"\u003e\n\n\u003ch3\u003eOne drum of Koch-Chemie Mzr. 200 litres of working solution.\u003c\/h3\u003e\n\u003cp\u003eThe Koch-Chemie Mzr pays back on yield. One litre of concentrate at 1:20 dilution gives you 21 litres of ready-to-use cleaner — enough for 15–20 full interior cleans. At €7.67 a litre that works out to under €0.50 per car. If you detail regularly, grab the 11-kg drum: at €77.75 you're at €7.07 per kilo and around 200 litres of working solution at 1:20.\u003c\/p\u003e\n\n\u003cp\u003eThe Mzr is built for detailers, workshops and serious hobby detailers who want a concentrate over ready-mixed bottles. If you only clean the interior occasionally and don't want to mess with dilution, grab the MultiInteriorCleaner ready to use. If you want flexibility — stronger for a smoker's cabin, weaker for the weekly wipe-down — the Mzr is the cheaper bet.\u003c\/p\u003e\n\n\u003cp\u003eFor day-in, day-out workshop use we run a Koch-Chemie tap on the 11-kg drum: dose the concentrate into the bottle, top up with water, done. The 1-litre bottle is the one to keep for mobile work and the detailing kit. Store both frost-free between 5 and 30 °C; sealed concentrate keeps for 24 months. Use any diluted mix within four weeks.\u003c\/p\u003e\n\n\u003cp\u003eOne safety note to finish: the Mzr is classified as corrosive (H314) and carries the signal word \"Danger\". In the concentrate, always wear gloves and safety glasses. At normal working dilutions of 1:10 to 1:20 the risk drops a lot, but you still want to avoid prolonged skin contact. The safety data sheet is on the product page for download.\u003c\/p\u003e\n\n\u003cp\u003eBottom line: the Koch-Chemie Mzr isn't an everyday quick-wipe cleaner. It's a tool for jobs where you need to clean deep — smoker's cars, used-car prep, workshop floors, industrial machines. If those are your jobs and you're up for dilution and PPE, you get an \u003cstrong\u003einterior all-purpose cleaner\u003c\/strong\u003e that comes in at under €0.50 per car — hard to beat at that price.\u003c\/p\u003e\n\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0800\/3272\/7375\/files\/d1_koch-chemie-mehrzweckreiniger-mzr-universalreiniger_lineup.png?v=1776196804\" alt=\"Koch-Chemie Mzr 1 litre bottle and 11 kg drum on cobblestone in front of the warehouse with a Mercedes-AMG GT\" width=\"900\" loading=\"lazy\"\u003e","brand":"Koch-Chemie","offers":[{"title":"1000 ml \/ 1 liter","offer_id":48762462536015,"sku":"D1-KCX-86001","price":8.99,"currency_code":"EUR","in_stock":true},{"title":"2x 1000 mL","offer_id":49536037454159,"sku":"D1-KCX-86001_2","price":17.62,"currency_code":"EUR","in_stock":true},{"title":"3x 1000 mL","offer_id":49536037486927,"sku":"D1-KCX-86001_3","price":26.16,"currency_code":"EUR","in_stock":true},{"title":"11kg","offer_id":48762460307791,"sku":"D1-KCX-86011","price":79.49,"currency_code":"EUR","in_stock":true},{"title":"21kg","offer_id":49536024772943,"sku":"D1-KCX-86021","price":146.49,"currency_code":"EUR","in_stock":true},{"title":"225kg","offer_id":49536024805711,"sku":"D1-KCX-86225","price":1647.99,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/3272\/7375\/files\/koch-chemie-mehrzweckreiniger-mzr-universalreiniger.png?v=1714922290"},{"product_id":"koch-chemie-colourlock-pol-star-reinigerkonzentrat-textil-leder-alcantara","title":"COLOURLOCK \"Pol Star\" cleaner concentrate for fabric, leather \u0026 Alcantara","description":"\u003ch2 id=\"speakable-headline\"\u003eCOLOURLOCK Pol Star cleans fabric, leather and Alcantara from one bottle\u003c\/h2\u003e\n\n\u003cblockquote id=\"speakable-summary\"\u003e\n  \u003cp\u003e\u003cem\u003eWhat is COLOURLOCK Pol Star? A pH-neutral cleaner concentrate from Koch-Chemie and COLOURLOCK for fabric, Alcantara and pigmented smooth leather, dosed 1:5 to 1:20. Not for aniline leathers or open-pore types like nubuck or suede.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\n\u003chr\u003e\n\n\u003cp id=\"speakable-definition\"\u003e\u003cstrong\u003eCOLOURLOCK Pol Star\u003c\/strong\u003e is a cleaner concentrate from Koch-Chemie and COLOURLOCK for interior dirt across three material groups: upholstery fabric, Alcantara and pigmented smooth leather. Since Koch-Chemie took over leather specialist COLOURLOCK in 2025, the classic Pol Star carries over with the same formula under the new label.\u003c\/p\u003e\n\n\u003cp\u003eSame chemistry, new branding: the leather know-how now lives in the product name, but production stays at Koch-Chemie in Unna. If you knew the old Pol Star Po, you're getting the same formulation here — just as a more economical concentrate rather than ready-to-use. The 1-litre bottle gives you around 11 litres of working solution at 1:10, which puts the per-use cost below any comparable pre-mixed interior cleaner.\u003c\/p\u003e\n\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0800\/3272\/7375\/files\/d1_koch-chemie-colourlock-pol-star-reinigerkonzentrat-textil-leder-alcantara_hero.png?v=1776185413\" alt=\"COLOURLOCK Pol Star cleaner concentrate on workshop trolley next to BMW M3 interior\" loading=\"lazy\"\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThree materials, one bottle.\u003c\/strong\u003e Pol Star pulls dirt off textile fabrics, Alcantara and pigmented smooth leather. pH 7, no acids or alkalis, no bleach. Day-to-day that means one cleaner for seat, carpet and door card instead of three separate bottles on the shelf.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e1:5 to 1:20 dilution, 1 litre makes up to 21 litres of ready solution.\u003c\/strong\u003e At 1:10 the working solution comes in around 94 cents per litre — the ready-to-use predecessor Pol Star Po sits at 8.63 EUR per litre. For shops, detailers and regular interior cleaning, the concentrate is what makes the difference.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConserver protects existing impregnations.\u003c\/strong\u003e The formula carries a protective component that doesn't attack hydrophobic treatments. Fabric coatings like GYEON Q²M Fabric or factory upholstery impregnations stay intact after cleaning.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003cblockquote class=\"praxistipp\"\u003e\n  \u003cp\u003e\u003cstrong\u003eDetailing1's tip from the shop:\u003c\/strong\u003e The most common mistake is going too strong on the dilution. A lot of detailers start at 1:5 — but the stronger mix leaves surfactant residue that dries as pale rings. Start at 1:10 and only step up to 1:5 if the dirt won't come out on the first pass. On leather you stay at 1:20, full stop. Use distilled water — tap water brings limescale rings with it, particularly nasty on dark Alcantara.\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003e1:10 as standard. 1:20 on leather.\u003c\/h3\u003e\n\u003cp\u003ePol Star gets dosed differently depending on material and dirt level. 1:10 is the all-round ratio for fabric and Alcantara at normal soiling — a 500 ml spray bottle then takes 45 ml of concentrate and 455 ml of distilled water. Vacuum thoroughly before cleaning so loose dirt doesn't get into the solution and pull streaks.\u003c\/p\u003e\n\n\u003cp\u003eFor embedded stains on carpet or footwell, drop to 1:5. On leather you stay at 1:20, because the top coat can react to higher surfactant levels with a loss of sheen. The conserver in the formula protects existing impregnations but doesn't replace a sealant after cleaning — if you want to rebuild a fabric impregnation, lay it down separately once everything is fully dry. Dwell time runs 30 to 60 seconds; longer doesn't give you more cleaning, because the surfactant action hits its plateau by then.\u003c\/p\u003e\n\n\u003cp\u003eYou apply with a fine-mist sprayer, not directly with the cloth. The fine foam needs air to work into the fibre — too much liquid floods the fabric and drags the drying time out to 12 hours. To lift it off, grab a \u003ca href=\"\/en\/products\/the-collection-mikrofasertuecher-allround-coating-300-kurzfloriges-edgeless-mikrofasertuch-300-gsm\"\u003eshort-pile microfibre cloth\u003c\/a\u003e or a wet-dry vacuum for larger upholstery work. On Alcantara, work along the fibre direction — never circular, otherwise the surface mats up visually and looks duller than before.\u003c\/p\u003e\n\n\u003cp\u003eAfter cleaning, wipe down or extract with clean water so no surfactant residue stays behind. Leftovers would act as a dust magnet and re-soil the surface faster. Work at room temperature between 15 and 25 degrees — in sun or heat the concentrate flashes off too fast and leaves rings.\u003c\/p\u003e\n\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0800\/3272\/7375\/files\/d1_koch-chemie-colourlock-pol-star-reinigerkonzentrat-textil-leder-alcantara_anwendung_2887a60b-7120-4b56-8839-5f9adb7e9e97.png?v=1776185956\" alt=\"Pol Star diluted 1:10 sprayed onto Alcantara seat from iK Multi spray bottle\" loading=\"lazy\"\u003e\u003c\/p\u003e\n\n\u003ch3\u003ePol Star handles three materials. Two leather types it doesn't.\u003c\/h3\u003e\n\u003cp\u003ePol Star is approved for pigmented, top-coated smooth leather — that's most modern automotive leather from year 2000 onwards. The top coat insulates the cleaner from the collagen, so the surfactants pull dirt off without working into the material.\u003c\/p\u003e\n\n\u003cp\u003eOn open-pore leathers it behaves differently. Aniline, semi-aniline and nubuck have no protective pigment layer — the concentrate goes straight into the fibre and can cause staining or discolouration. For those materials, the specific Aniline \u0026 Nubuck Cleaner from the same COLOURLOCK range is the right call, formulated for exactly that case. Suede and velour fall into this category too and need a dry or enzymatic approach instead of a surfactant solution.\u003c\/p\u003e\n\n\u003cp\u003eBefore every leather job, test colourfastness on a hidden spot: wet a cotton swab with 1:20 solution, hold it on the test patch for 30 seconds, check for colour transfer. If the swab picks up colour, the leather isn't a fit for Pol Star. The manufacturer doesn't put this front and centre — but it saves you expensive mistakes, because discoloured leather usually only comes back with a full re-dye. For heavily soiled pigmented leather with embedded skin oil, go to the \u003ca href=\"\/en\/products\/koch-chemie-colourlock-leather-cleaner-strong-lederreiniger\"\u003eCOLOURLOCK Leather Cleaner Strong\u003c\/a\u003e. If you're cleaning all materials in the interior regularly, grab Pol Star. If you're specifically reconditioning soiled leather, grab the specialist.\u003c\/p\u003e\n\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0800\/3272\/7375\/files\/d1_koch-chemie-colourlock-pol-star-reinigerkonzentrat-textil-leder-alcantara_ergebnis.png?v=1776185960\" alt=\"Clean Alcantara seat after COLOURLOCK Pol Star clean with iK spray bottle in background\" loading=\"lazy\"\u003e\u003c\/p\u003e\n\n\u003ch3\u003eFor detailers, shops and weekend enthusiasts\u003c\/h3\u003e\n\u003cp\u003ePol Star fits where interior gets cleaned regularly and a concentrate makes more sense than ready-to-use sprays. Detailing shops run the 1-litre bottle and decant into their own sprayers; private users start with the 100 ml or 250 ml size for one to two cars a year. The 1-litre at 1:10 covers around 20 full interior cleans.\u003c\/p\u003e\n\n\u003cp\u003eNot the right pick if you're only doing leather — for that, the COLOURLOCK range has the dedicated Leather Cleaner in Mild and Strong grades, tuned to dirt level and leather type. It also hits limits with dried-in stains older than a week or organic spills like milk, blood or vomit — for those, enzyme cleaners work more reliably, because they break protein bonds instead of just lifting them.\u003c\/p\u003e\n\n\u003cp\u003eOn the workflow side: as a concentrate, you need a proper fine-mist spray head. The \u003ca href=\"\/en\/products\/koch-chemie-spruehkopf-spruehflasche-set\"\u003eKoch-Chemie sprayer and bottle set\u003c\/a\u003e is built for it — the Canyon CHS-3AN throws an even mist that supports fine foam build-up instead of flooding the surface. Once you're set up, a full interior clean runs 40 to 60 ml of concentrate — that's the practical gap between concentrate and ready-mix. If you run the concentrate in a shop setting, follow up with a wet-dry vacuum after cleaning to pull residual moisture out and avoid drying rings.\u003c\/p\u003e\n\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0800\/3272\/7375\/files\/d1_koch-chemie-colourlock-pol-star-reinigerkonzentrat-textil-leder-alcantara_lineup.png?v=1776185429\" alt=\"COLOURLOCK Pol Star in three sizes 100 ml 250 ml 1 litre on paving stone\" loading=\"lazy\"\u003e\u003c\/p\u003e\n","brand":"Koch-Chemie × COLOURLOCK","offers":[{"title":"1000 ml \/ 1 liter","offer_id":56541767369039,"sku":"D1-KCX-619-1L-01","price":9.99,"currency_code":"EUR","in_stock":true},{"title":"250ml","offer_id":56541771432271,"sku":"D1-KCX-619-250ML-01","price":5.99,"currency_code":"EUR","in_stock":true},{"title":"100ml","offer_id":56541767401807,"sku":"D1-KCX-619-100ML-01","price":5.99,"currency_code":"EUR","in_stock":true},{"title":"5 liters","offer_id":57635624288591,"sku":"D1-KCX-619-5L-01","price":43.99,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/3272\/7375\/files\/koch-chemie-colourlock-pol-star-reinigerkonzentrat-textil-leder-alcantara.png?v=1779136128"}],"url":"https:\/\/detailing1.de\/en\/collections\/spruehextraktionsreiniger-konzentrat.oembed","provider":"Detailing1","version":"1.0","type":"link"}