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Fernox DS40 System Cleaner & Descaler | Remove Limescale & Sludge (Powder)

£58.48

Fernox DS40 System Cleaner & Descaler (Powder) Fernox DS40 is a fast-acting citric acid cleaner designed to clear limescale, magnetite (black sludge), and other stubborn deposits from central heating systems. It’s ideal for powerflushing and can also descale individual components like heat exchangers and boiler parts. The free-flowing powder dissolves...

Dresses Size Chart

Dress Size Chart (Inch)
DRESSES
SIZE IN INCHES
SIZE US / CAN BUST WAIST HIPS
XS 0 31"-32" 24"-25" 34"-35"
S 2-4 33"-34" 26"-27" 36"-37"
M 6-8 35"-36" 28"-29" 38"-39"
L 10-12 37"-39" 30"-32" 40"-42"
XL 14 40"-42" 33"-35" 43"-45"
Dress Size Chart (cm)
DRESSES
SIZE IN CM
SIZE US / CAN BUST WAIST HIPS
XS 0 78.7-81.2 60.9-63.5 86.3-88.9
S 2-4 83.8-86.3 66-68.5 91.4-93.9
M 6-8 88.9-91.4 71.1-73.6 96.5-99
L 10-12 93.9-99 76.2-81.2 101.6-106.6
XL 14 101.6-106.6 81.2-88.9 109.2-114.3

Swimwear Size Chart

Dress Size Chart (Inch)
SWIMWEAR
SIZE IN INCHES
SIZE US / CAN BUST WAIST HIPS
XS 0 31"-32" 24"-25" 33"-34"
S 2 33"-34" 26"-27" 35"-37"
M 4 35"-36" 28"-29" 37"-38"
L 6 37"-39" 30"-32" 39"-41"
XL 8 40"-42" 33"-35" 42"-44"

Shoes Size Chart

US EURO UK AUS JAPAN CHINA
5 35-36 3 3.5 21.5 35
5.5 36 3.5 4 22 35.5
6 36-37 4 4.5 22.5 36
6.5 37 4.5 5 23 36.5
7 37-38 5 5.5 23.5 37
7.5 38 5.5 6 24 37.5
8 38-39 6 6.5 24.5 38
8.5 39 6.5 7 25 38.5
9 39-40 7 7.5 25.5 39
9.5 40 7.5 8 26 39.5
10 40-41 8 8.5 26.5 40
11 41-42 9 9.5 27.5 41

Delivery

    All orders shipped with DPD unless otherwise notified.

    Minimum charge of £7.50 charge on all orders pallets charges at rate on the day of purchase.

    All orders are shipped with a DPD tracking number which is why we ask for your email and mobile number.

Returns

    Items returned within 14 days of their original shipment date in same as new condition will be eligible for a full refund or store credit (minus restocking charge).

    Refunds will be charged back to the original form of payment used for purchase.

    Customer is responsible for shipping charges when making returns and shipping/handling fees of original purchase is non-refundable.

    All sale items are final purchases.

Help

Give us a shout if you have any other questions and/or concerns.

Email:

Phone: 0333 577 2455

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Fernox DS40 System Cleaner & Descaler (Powder)

Fernox DS40 is a fast-acting citric acid cleaner designed to clear limescale, magnetite (black sludge), and other stubborn deposits from central heating systems. It’s ideal for powerflushing and can also descale individual components like heat exchangers and boiler parts. The free-flowing powder dissolves quickly and comes with a liquid neutraliser to safely complete the process. Suitable for all mixed-metal systems, including aluminium.

Key Features
• Quickly removes limescale, black sludge and heavy deposits
• Restores circulation and improves heating efficiency
• Easy-dose powder for powerflushing or F&E tank dosing
• Colour indicator turns yellow when exhausted
• Safe for all system metals, including aluminium
• Includes liquid neutraliser for safe finishing