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Fernox F7 Biocide 200ml | Prevent Bacterial & Fungal Growth in Heating Systems

£36.72

Fernox F7 Biocide 200ml Fernox F7 Biocide protects low-temperature heating systems, including underfloor and chilled water setups, from bacterial contamination and fungal growth. It prevents the jelly-like deposits often found in poorly maintained systems and eliminates gas produced by fermentation. Used alongside Fernox Protector F1 or Antifreeze Protector Alphi-11, it...

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

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Phone: 0333 577 2455

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Fernox F7 Biocide 200ml

Fernox F7 Biocide protects low-temperature heating systems, including underfloor and chilled water setups, from bacterial contamination and fungal growth. It prevents the jelly-like deposits often found in poorly maintained systems and eliminates gas produced by fermentation. Used alongside Fernox Protector F1 or Antifreeze Protector Alphi-11, it provides complete protection against corrosion, scale, and microbiological fouling. It can also be added to feed and expansion cisterns to remove and prevent future fungal buildup.

The treatment starts working within 24 hours and is easy to dose through a radiator, towel rail, filling loop, or inline system filter.

Key Features
• Prevents jelly-like deposits in low-temperature and underfloor systems
• Fast action – begins working within 24 hours
• Easy to apply via radiator, towel rail, filling loop, or system filter
• Fully compatible with all Fernox Protectors
• Dual-action biocide offering both immediate and long-term protection
• One 200ml bottle treats up to 250m² of UFH or 150 litres of system volume