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30 Day Returns Policy
Knowledgeable & Helpful Team
Free Nationwide Delivery | 30 Day Returns Policy | Knowledgeable & Helpful Team
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Fernox DS40 Descaler & Cleaner

SKU: 62475

£59.24 inc. VAT

• Delivery 1-5 days
• Free nationwide delivery
• 30 day return policy

• Delivery 1-5 days
• Free nationwide delivery
• 30 day return policy



DS40 Descaler and Cleaner is a fast-acting, citric acid-based cleaner that is designed to remove limescale, magnetite, or black sludge and other system contaminants. Ideal for use when power flushing, it can also be used to descale a heat exchanger or boiler component separately. Supplied with a liquid neutraliser product.

Please always refer to the manufacturer’s instructions for the correct application. All parts should be fitted by a qualified plumber.

We know you’re busy and need to get repair jobs done quickly and efficiently. Our experts are waiting to help you with your plumbing, heating, or bathroom project. UK Plumbing is the UK’s favourite supplier of plumbing and heating materials. We strongly value trust, reliability and always deliver excellent service for a fair price.

Product features:

• Rapidly removes limescale, black sludge, and other deposits
• Restores circulation and improves heating efficiency
• Free-flowing powder for easy use with powerflushing units, application via F&E tank or suitable dosing vessel
• Turns yellow when product exhausted – liquid neutraliser supplied with the product
• Compatible with all mixed metal systems, including aluminium
• Convenient to use liquid neutraliser supplied with the product

Additional information

Download Technical Data SheetSafety Data Sheet


Manufacturer Code



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We deliver all around the UK using DHL and Parcelforce. Standard delivery will take 1-5 working days to reach you. However, once the order is received, we will contact you to give you a more precise timescale. Usually, we will deliver the next day, subject to the date and time of when the order is received and the product.

Orders placed during the weekend will be processed the following Monday for delivery the following day. In the case of Bank Holidays, your order will be processed the next working day and delivered the following working day.

Remote areas: For orders to some addresses, especially in the Highlands of Scotland and Offshore, next day delivery options are not available, and delivery can take several days. Saturday delivery is unavailable for these areas.