In focus today: baked-on iron fallout and tar dissolve chemically off the paint, with no sanding. Paint prep

For summer: a spray sealant after washing makes water bead and shields against pollen and tree sap. Discover spray sealants

Fresh on the blog: when the fair-weather window is ideal for paint decontamination in summer. Read the blog

Bestseller: Koch-Chemie Top Star leaves interior plastics satin-matte instead of greasy. View product

Bug season: insect residue lifts off in minutes once soaked, before the acid attacks the clear coat. Shop insect removers

New in range: the ZviZZer Quick Shine quick detailer for fast gloss in between. View product

For pros: with Detailing1 PRO you get trade and reseller conditions. Learn more

Advice: the Shopping Assistant with Daniel finds the right product. Start chat

Direct contact: unsure which shampoo suits your paint? Message us on WhatsApp. WhatsApp advice

Buyer protection: your purchase is secured via Trusted Shops. Read reviews

Customer support: questions about your order or shipping? Find answers in the help center. To the help center

Before and after: our results on Instagram. Follow now

Hull Precleaner alkaline "Hal" Alkaline Pre-Cleaner (Marine Line) 1000ml

ghs.code
ghs.code
CHF 24.57 CHF 26.73
Inhalt: 1000mlUnit price (CHF 24.57 / l)
Incl. VAT Shipping calculated at checkout.
Contents

Benefits of Detailing1

📦 Shipping from just €5.90 within Germany
🤝🏻 Free delivery from €89
🚀 Fast shipping & short delivery times
💬 Car care expert customer service

Effective pre-cleaner for boat hull and boat deck

Koch-Chemie Hull Precleaner alkaline “Hal” is a highly concentrated, phosphate-free pre-cleaner for boat hulls and decks. It effectively removes stubborn dirt such as bird and duck droppings, as well as weather-related residues from gelcoat, paint, PVC, and synthetic teak.

Read full description

Questions and help

Do you have any questions or need help?

We are sure that our help page will help you. There you will find information on how to contact us and the relevant answers to frequently asked questions.

Didn't find what you were looking for? Write us a message in the chat.

shipping

Shipping within Germany from €5.90 with delivery times of 1 to 2 business days. For orders over €89, we ship free of charge with DHL within Germany.

Need your order by the next day? Discover Express Shipping starting from €14.90.

We ship your order to 🇩🇪 Germany, 🇦🇹 Austria, 🇨🇭 Switzerland, 🇳🇱 Netherlands, 🇧🇪 Belgium, 🇱🇺 Luxembourg, 🇫🇷 France, 🇮🇹 Italy, 🇪🇸 Spain, 🇵🇹 Portugal, 🇩🇰 Denmark, 🇸🇪 Sweden, 🇭🇺 Hungary, 🇨🇿 Czech Republic, 🇸🇰 Slovakia and 🇸🇮 Slovenia.

Learn more

Store pickup

Car Care Store in Nordhorn

Why wait when you can get it fast? Order your car care products from us online and choose between convenient pickup or our lightning-fast delivery, whether locally or throughout Europe. We are dedicated to offering you maximum flexibility and convenience so your car always stays in top condition.

You can always pick up your order from Tuesday to Friday, 10:00 to 17:00, at Bosinks Kamp 8 in 48531 Nordhorn at Detailing1. Please have your pickup confirmation ready. We look forward to your visit.

Discover our Detailing Store in Nordhorn

Alkaline pre-cleaner for boat hull and deck Koch-Chemie Hull Precleaner alkaline „Hal"

The Koch-Chemie Hull Precleaner alkaline „Hal“ is a highly concentrated, phosphate-free pre-cleaner built specifically for the thorough pre-wash of boat decks and hulls. Thanks to a powerful mix of high-grade chelating agents and special surfactants, it cuts through even stubborn deposits like bird and duck droppings as well as grime from weather and the environment, fast and effectively. Ideal for gelcoat and boat-paint surfaces as well as teak-replacement decking and PVC.

  • Powerful cleaning: Effectively pulls off stubborn grime like bird and duck droppings as well as environmental deposits.

  • Gentle on materials: Suitable for gelcoat, paint and plastic surfaces as well as teak-replacement decking and PVC.

  • Versatile: Ideal for the pre-wash of boat decks and hulls.


Effective cleaning for marine surfaces

The Koch-Chemie Hull Precleaner alkaline „Hal“ is the go-to choice for a thorough pre-clean of boat hulls and decks. Its highly concentrated, phosphate-free formula combines high-grade chelating agents and special surfactants that lift even stubborn deposits like bird and duck droppings as well as grime from weather and the environment in no time. That makes it especially good at cleaning gelcoat and boat-paint surfaces as well as teak-replacement decking and PVC.

How to use it for the best results

For use, dilute the pre-cleaner with water at 1:20 to 1:60 depending on how dirty the surface is. Then lay the solution down on the surface with a Pressure Sprayer alkaline or a wash sponge and let it dwell for no more than 5 minutes. If needed, you can go back over it with an Interior Scrubber. After the dwell time, rinse the treated area thoroughly with water and a sponge. Keep it off sensitive surfaces like galvanised steel, aluminium or solid wood. Once it's properly clean, it's worth protecting the surface with polish and a sealant to keep dirt from settling back in quickly.

Versatile uses on the water

The Koch-Chemie Hull Precleaner alkaline „Hal“ works brilliantly on all sorts of surfaces on board, from gelcoat and paint to plastic. Its effective cleaning power makes it an essential for boat owners who care about keeping their craft clean and well looked after. Whether for regular upkeep or getting ready for a new season, this pre-cleaner delivers every time.

Not sure about Koch-Chemie Hull Precleaner alkaline "Hal" Alkaline Pre-Cleaner (Marine Line)? Get it explained:


Hinweise für Koch-Chemie Hull Precleaner alkaline "Hal" Alkaline Pre-Cleaner (Marine Line)

Gewerbekundenkonform

Das hier als „Gewerbekundenkonform“ gekennzeichnete Produkt ist nach deutscher Gesetzgebung nicht privatkundenkonform verpackt, deklariert, angemeldet und zertifiziert. Es darf ausschließlich von gewerblichen Käufern erworben werden und ist ausschließlich für gewerbliche Anwender zugelassen. Bitte gebe deine Umsatzsteuer Identifikationsnummer im Warenkorb an. Auf Anfrage erhälst Du Auskunft darüber, ob und welche Gebinde des Produkts privatkundenkonform sind.


Materialzusammensetzung

Sodium p-cumenesulfonate (CAS 15763-76-5, EC 239-854-6) — 5- < 10 %, Ethanolamine substance for which an EU exposure limit value applies. (CAS 141-43-5, EC 205-483-3, Index 603-030-00-8) — 5- < 10 %, 2-Propylheptanol, ethoxylated (CAS 160875-66-1) — 1- < 10 %, Alcohols, C12-14, ethoxylated, sulfates, sodium salts (CAS 68891-38-3, EC 500-234-8) — 1- < 5 %, and Sodium hydroxide (CAS 1310-73-2, EC 215-185-5, Index 011-002-00-6) — 0.5- < 2 %


Gefahr

ghs.code

Verätzungsgefahr

ghs.code

Gesundheitsschädlich

Gefahrenhinweise

Kann gegenüber Metallen korrosiv sein.H290
Verursacht Hautreizungen.H315
Verursacht schwere Augenschäden.H318
Kann die Atemwege reizen.H335

Sicherheitshinweise

Behälter dicht verschlossen halten.P233
Einatmen von Staub/Rauch/Gas/Nebel/Dampf/Aerosol vermeiden.P261
Schutzhandschuhe/Schutzkleidung/Augenschutz/Gesichtsschutz tragen.P280
BEI KONTAKT MIT DEN AUGEN: Einige Minuten lang behutsam mit Wasser ausspülen. Eventuell vorhandene Kontaktlinsen nach Möglichkeit entfernen. Weiter ausspülen.P305+P351+P338
Sofort GIFTINFORMATIONSZENTRUM/Arzt anrufen.P310
Eventuell vorhandene Kontaktlinsen nach Möglichkeit entfernen. Weiter ausspülen.P338
Verschüttete Mengen aufnehmen, um Materialschäden zu vermeiden.P390
An einem gut belüfteten Ort aufbewahren. Behälter dicht verschlossen halten.P403+P233


Downloads

Sicherheitsdatenblatt herunterladen


Diese Produktinformation soll und können dich nur unverbindlich beraten. Eine Haftung unsererseits kann hieraus nicht abgeleitet werden. Prüfe bitte, ob das Produkt für deinen Anwendungsfall geeignet ist. Vor der Anwendung auf Eignung und Verträglichkeit prüfen. Zur Beratung stehen wir Dir gerne zur Verfügung.

Fragen zu den Hinweisen?

More about Koch-Chemie

Koch-Chemie steht seit über 50 Jahren für professionelle Autopflege auf höchstem Niveau. Die Marke vereint deutsche Chemie-Kompetenz, präzise Forschung und praxisorientierte Anwendung. Alle Produkte werden im eigenen Labor entwickelt und in Deutschland produziert – mit Fokus auf maximale Leistung, Materialverträglichkeit und Nachhaltigkeit.

Das Besondere: Koch-Chemie denkt Fahrzeugpflege als System. Reinigung, Politur und Schutz greifen perfekt ineinander, sodass jedes Fahrzeug effizient, schonend und sichtbar besser gepflegt wird. Egal ob für professionelle Aufbereiter oder Enthusiasten – Koch-Chemie liefert messbare Ergebnisse: tiefen Glanz, glatte Oberflächen und nachhaltigen Werterhalt.

Mit klaren Standards, innovativer Technologie und echtem Qualitätsbewusstsein ist Koch-Chemie heute einer der führenden Hersteller der professionellen Fahrzeugaufbereitung – und bei Detailing1 bekommst du die gesamte Produktvielfalt dieser Marke.

Contact

Koch‑Chemie GmbH
Einsteinstr. 42, 59423 Unna, Deutschland

+492303986700
info@koch-chemie.com

koch-chemie.com

payment

💳 Secure payment

  • American Express
  • Apple Pay
  • Bancontact
  • BLIK
  • EPS
  • Google Pay
  • iDEAL Wero
  • Klarna
  • Maestro
  • Mastercard
  • MobilePay
  • PayPal
  • Shop Pay
  • Twint
  • USDC
  • Visa

Choose from many payment methods such as PayPal, Klarna, Apple Pay, Mastercard or Visa and benefit from purchase on account and installment payments. Your payment information is always processed securely. Questions about payment?


📦 Fast shipping

Kostenloser Versand ab 70€ mit DHL und DPD in 1-2 Tagen bei dir Zuhause

Your order will reach you in just 1-2 days with DHL, DPD or UPS from €5.90. Shipping with DHL is free for orders over €89. Need it faster? Choose from our express shipping offer. We attach great importance to sustainability, which is why our shipping with DHL and DPD is climate-neutral. Questions about shipping?