solo CLEANLine (303 A / B) Spray Bottle 1.25 Liters 1 Stück

One pump sprayer, two chemical worlds: solo CLEANLine (303 A / B) — Pump Sprayer 1.25 Liters

Which pump sprayer suits your cleaner? The solo CLEANLine (303 A / B) — Pump Sprayer 1.25 Liters comes as 303 A for acidic media (FKM, pH 1–7) and as 303 B for alkaline media (EPDM, pH 7–14) – each with 3 bar, safety valve and adjustable nozzle.

solo CLEANLine (303 A / B) — Pump Sprayer 1.25 Liters is the solution if you want to atomize cleaning chemicals not "just any old way", but in a controlled, even, and material-appropriate manner. In detailing, it's often not just the product that matters, but how you apply it: too coarse = unnecessary consumption, too fine = dries out, wrong seal = trouble. This is exactly where the CLEANLine series excels: 303 A and 303 B are technically designed the same way, but chemically "sealed" differently – so you can use acidic and alkaline cleaners in the appropriate system. Both variants operate manually with a piston pump up to 3 bar, have a safety valve for pressure release, and an adjustable hollow cone nozzle for spray volume and spray pattern.

• Correct pH instead of "it'll do": 303 A uses FKM seals for acidic media (pH 1–7), 303 B uses EPDM seals for alkaline media (pH 7–14). This isn't theory – this is the difference between working cleanly long-term and "why is this thing swelling now?".
• Consistent spray pattern at 3 bar: With up to 3 bar operating pressure, you get reproducible wetting – ideal for applying pre-wash, APC, or wheel cleaner evenly and without excessive mist.
• Practical details that make everyday life stress-free: Safety valve for pressure release, large filling opening, stand feet, semi-transparent container with fill marking – plus a lock for continuous spraying when you're covering large areas instead of training your fingers.

Understanding and choosing FKM vs. EPDM seals pH range 1–7 and 7–14 correctly

FKM seals (303 A) are designed to reliably handle acidic cleaning media in the pH window 1–7 – SOLO explicitly mentions their use in the acidic cleaning area and lists FKM ("Viton") as the sealing material. If you work with acidic special cleaners in detailing (classically: lime/mineral-based deposits, water spots and rust on suitable surfaces, depending on the product), then the A variant is the logical choice – not because "A is better", but because the seal matches the medium. Conversely, the EPDM seal (303 B) is designed for alkaline cleaners in the pH 7–14 range; SOLO describes EPDM as a sealing material for basic/alkaline applications and also mentions its suitability for disinfectant solutions. In practice, this means: For typical all-purpose cleaners (APC) and many degreaser/pre-wash scenarios, you'll often be "in the green" with 303 B, while 303 A is your safe bet when you deliberately work with acidic products. Our tip from detailing: If you regularly spray both alkaline and acidic products, really get both variants – this is not a gimmick, but good chemical hygiene. And if you love your storage space: The CLEANLine even has a card/label system in the spray head, including colored identification cards – great for distinguishing contents and application areas (and yes: this very effectively prevents the "Oops, wrong cleaner" moment).

Car pre-wash and car detailing with pump sprayer Controlled application of cleaning chemicals

Car pre-wash thrives on chemicals adhering evenly and being able to work – not on you sending half of it into the air as mist. This is exactly what the 1.25-liter form factor is strong for: handy, quick to fill, and large enough to treat a car "in one go" without constantly refilling (filling volume 1.25 L). The adjustable hollow cone nozzle allows you to trim the spray pattern so that you get more area or more punch depending on panel size and contamination – and without changing the character of the product. For us in practice, this is the sweet spot for: pre-cleaners/pre-sprays on lower areas, APC on door sills/door jambs (with the appropriate pH variant), and targeted wetting of problem areas.

3 bar spray pressure Hollow cone nozzle safety valve and continuous spraying for a clean spray pattern

3 bar spray pressure is not just a pub talk figure for a hand pump sprayer, but the point at which the spray pattern and working rhythm become stable: pump, spray, continue working – without being "empty" again after three trigger pulls. SOLO specifies 3 bar for both 303 models and combines this with a safety valve that can release pressure for emptying/refilling and automatically relieves overpressure. In addition, there is the encapsulated pump unit, which shields pump elements from the cleaning liquid to be applied – a detail that in everyday life simply means: less contact of the technology with aggressive chemicals and thus a more robust, consistent function over time. And because we love it in detailing when things "just work": The locking slide for continuous spraying is gold when you want to wet larger areas without sending your finger to the gym. If you need more "foam carpet" instead of a spray film, check out a foam sprayer/foamer from us as a supplement – the pump sprayer then remains your tool for pre-sprays, targeted wetting, and working "with feeling".