Koch-Chemie Foamer Bottle 1 Stück

Lay concentrated interior cleaners down as a dry, dosed foam

What is the Koch-Chemie Foamer Bottle? A 150 ml pump bottle with a dilution scale up to 1:10 that turns cleaner concentrates into a dry, high-volume foam — spot-on for upholstery, leather and Alcantara. Not for strong acidic wheel cleaners, bug removers, solvents or ready-to-use cleaners, since the bottle is built for concentrates you dilute yourself.

The Koch-Chemie Foamer Bottle (Koch Chemie Foamer Bottle) is a foam dispenser from Koch-Chemie that turns concentrated cleaners into a dry, lamella-rich foam via a built-in mixing chamber and a pump head. The active stays on the fibre longer, because the cleaning solution doesn't flood the surface like a spray — it sits there as a fine-pored foam and works the substrate layer by layer instead of soaking it through.

The side of the bottle has a volume and dilution scale printed on it, marking ratios from 1:1 to 1:10 clearly. You fill water up to the dilution mark you want first, then add the concentrate — not the other way round, or the cleaner foams up while you're filling and you lose volume. That order is the most common mistake we see day-to-day, and the reason some detailers report foam-density problems.

• Scale 1:1 to 1:10 on the bottle. 150 ml of concentrate at 1:10 gives you about 1.65 litres of ready-to-use cleaning solution — on a typical interior job with COLOURLOCK Pol Star concentrate that's enough for four to five complete cars. No measuring cup or syringe to carry around, and the dilution is repeatable every time you refill.
• Dry foam instead of a wet spray. The pump head makes a fine-pored foam that clings vertically to seat bolsters and door cards without seeping through. On upholstery and Alcantara that means the active stays in the dirt instead of in the foam core, and the brush works cleaner because it doesn't have to push through a layer of water.
• Dosed product use. One fill of the Foamer Bottle covers the full interior detail of a mid-size car (seats, carpet, headliner, door cards, centre console) — using 80 to 120 ml of diluted solution. Compared with spraying straight from a 1-litre bottle, that cuts cleaner use by about two thirds.

Detailing1's tip from the shop: The most common reason a pump mechanism fails isn't a defect — it's dried-out cleaner concentrate sitting in the pump chamber. After every cleaning session, empty the bottle, refill with clean tap water and pump 8 to 10 strokes dry until only water comes out. Those 60 seconds of care add a lot to the life of the Foamer Bottle — a pump that dries out with cleaner residue jams the return spring and then has to be pushed back by hand.

Water first, concentrate after, read the scale

Unscrew the pump head, fill the bottle with lukewarm tap water up to the dilution mark you want, and only then top up with the concentrate — say COLOURLOCK Pol Star or the all-purpose cleaner "Mzr" — to the 100-percent mark. Put the pump head back on, tip the bottle two or three times rather than shaking it so no premature foam climbs into the pump chamber, and prime three to four strokes until stable foam comes out.

What matters is keeping concentrate and ready-to-use apart: the classic Pol Star "Po" 1L comes ready to go in the spray bottle and is NOT to be diluted — that one goes straight onto the upholstery. The Foamer Bottle is meant for the concentrate line (COLOURLOCK Pol Star, Green Star "Gs", all-purpose cleaner "Mzr"), which you couldn't use at all without diluting because it's dosed too strong.

Then wipe down with a damp microfibre cloth in one direction — never back and forth, or the dirt you've lifted works its way back into the weave. On heavily soiled seat bolsters or the top edges of backrests, a second pass with less foam beats a longer dwell time on the first pass, because the foam lamellae start to collapse after 90 seconds and the active stops working.

The dilution matrix for the most common jobs looks like this:

Not for acidic cleaners, and no snow-foam-cannon volumes

The Foamer Bottle covers the mid dilution range for interior chemistry — it's not a one-tool-does-everything replacement for other application gear. Strong acidic wheel cleaners, acidic bug removers and solvent-based tar removers don't belong in the dispenser, because the polypropylene seals and the stainless return spring take damage within a few uses at pH below 4 or with aromatic solvents.

Ready-to-use interior cleaners like the classic Pol Star "Po" 1L or Top Star "Ts" don't belong decanted into the Foamer Bottle either — those are set to the right concentration from the factory and would only take a pointless detour through the dispenser instead of coming straight out of the spray bottle. The Foamer Bottle is a dilution and foaming tool, not a decanting container.

For an exterior wash the 150 ml fill is simply too small and the spray radius too tight — foaming a whole body with the pump bottle takes half an hour and tires your hand out. If you want to foam paint, that's a job for a snow-foam cannon on the pressure washer, or at least a 1-litre pump sprayer with a foam nozzle.

Pinpoint work on interior surfaces → Foamer Bottle. Wide-area body pre-wash → snow-foam cannon or snow foam cleaner off the pressure washer. The second limit comes from day-to-day use: the pump head has a limited stroke volume, and after 200 to 300 strokes with undiluted concentrate the spring force drops off. Diluting here isn't optional — it's the technical condition for a long life.

For targeted interior work, not for the whole wash

The Foamer Bottle is the right call for anyone who regularly does interior detail with concentrate cleaners — your own cars, small detailing setups, commercial detailers who specialise in upholstery. If you've already got COLOURLOCK Pol Star or the all-purpose cleaner on the shelf, the dispenser is the obvious way to lay it down.

It's a worse fit if you only do a rough interior clean once or twice a year — then the spray mist straight from the original bottle of a ready-to-use cleaner is enough, and you skip the pump as a wear part entirely. In pure high-throughput commercial work too, where ten to fifteen interiors get done a day, it's worth investing in a Tornador foam attachment that runs on compressed air — that makes more foam per second and takes the load off your hand in continuous use.

The full interior detailing set pairs the Foamer Bottle with three parts: a concentrate as the chemical side, a medium-firm upholstery brush for the mechanical side, and a microfibre cloth to pick it all up. For the concentrate, the COLOURLOCK Pol Star cleaner concentrate in the 1-litre bottle is the one to grab — diluted it gives you several seasons of interior cleaning and it's tuned for upholstery, leather and Alcantara.

The unit price of 5.99 EUR sits below the typical consumable cost of a single interior detail — economically the accessory pays for itself from the third job on, because concentrate use runs about two thirds lower than spraying straight from a standard bottle. At ten interior sessions a year the Foamer Bottle pays for itself in the first month. This isn't a premium tool, it's a consumable — and that's exactly the category where it works best.

The one trick the maker doesn't write down: after every cleaning session, flush the pump through with clean water and leave the bottle open to dry out. Those 60 seconds of care turn the 5.99 EUR wear part into a tool that easily lasts two or three seasons — and that's exactly where the negative reviews fall down, hitting the missing care rather than the product.

Application of the Koch-Chemie Foamer Bottle

Filling, dosing, foaming

Unscrew the pump head and fill the empty bottle with lukewarm tap water up to the desired dilution mark — the scale shows ratios from 1:1 to 1:10. For Pol Star "Po" on upholstery, use the 1:10 line; for all-purpose cleaner on plastic, the 1:5 line; for Green Star "Gs" as an all-purpose cleaner, also 1:10.

Then add the cleaning concentrate up to the 100 percent mark. Do not reverse the order — if you pour in the concentrate first, you will produce premature foam when refilling with water, lose volume, and get an inconsistent dilution. Replace the pump head and tighten it hand-tight, then slowly tilt the bottle two to three times instead of shaking it. Shaking drives foam into the pump chamber and temporarily blocks the stroke.

Pump 3 to 4 times until a stable, dry foam emerges. Apply evenly to the cleaning surface from a distance of 10 to 15 centimeters — fine-pored foam holds vertically and does not soak into the upholstery fabric. Let it work for one to two minutes, then loosen with a medium-hard upholstery brush in circular motions and wipe off with a damp microfiber cloth in one direction.

Notes: The Foamer Bottle is designed for neutral to slightly alkaline cleaners — Pol Star, all-purpose cleaner, Green Star. Acidic wheel or insect cleaners attack the pump seals and belong in a separate acid-resistant spray bottle. After each session, fill the bottle with clear water, replace the pump head, and pump 8 to 10 times until clear water emerges — this prevents drying of cleaner residues in the return spring, which is the most common cause of blocked pumps. Store frost-free between 5 and 30 °C. Let the bottle air dry open after prolonged disuse.