Skip to product information
1 of 10

Sodium Hypochlorite Liquid Chlorine 14-15%

Sodium Hypochlorite Liquid Chlorine 14-15%

In stock

Eradicate severe black lichen, algae biofilms, moss, and deep environmental grime with Sodium Hypochlorite 14–15% (Liquid Chlorine), supplied in heavy-duty 5L containers, value multi-packs, and bulk 25L trade drums. Formulated at a high industrial active concentration of 14–15%, this professional-grade chemical concentrate acts rapidly through strong oxidative cleaning, instantly lifting stubborn black spots and organic discolouration from hard exterior surfaces without aggressive pressure jetting.

Engineered specifically for exterior cleaning contractors, softwash technicians, roof restoration specialists, grounds maintenance teams, and agricultural facilities, this industrial-strength liquid chlorine restores heavily weathered stone, render, concrete, and masonry. Available across 10 tailored configurations, it delivers rapid, deep cleaning across block paving, natural Indian sandstone, concrete paths, render, brickwork, and swimming pool water treatment systems.

Key Features:

  • 14–15% Industrial Active Strength – Commercial-grade high-strength liquid chlorine delivers rapid black spot removal and deep surface restoration.
  • 🎯 Fast-Acting Black Spot Destroyer – Breaks down ingrained black lichen (lichen pyrenocarp) and green algae staining within minutes of contact.
  • 🏡 Multi-Surface Exterior Restoration – High-potency cleaner for natural Indian sandstone, block paving, concrete, render, brick, and swimming pool sanitation.
  • 📦 High-Economy Trade Sizing – Supplied in heavy-duty 5L containers and 25L bulk drums with tiered quantity savings.
  • 🚰 Controlled Dosing Option – A 30ml precision dosing pump can be purchased and used with all 5L and 25L containers for clean, controlled, mess-free measuring.

Trade & Facility Applications:

  • Exterior Cleaning Contractors: Professional softwash treatments for Indian sandstone, weathered block paving, and concrete slabs.
  • Wall Render & Masonry Cleaning: Rapid chemical cleaning of exterior render, brickwork, and architectural stone facades.
  • Swimming Pool & Spa Water Treatment: High-potency liquid chlorine for chlorination, shock dosing, and pool water disinfection.
  • Grounds & Agriculture: Deep cleans dairy parlours, livestock pens, concrete farm yards, and commercial waste bays.

Product features

🧪 14–15% Available Chlorine – Industrial-grade Sodium Hypochlorite formulated for professional exterior softwashing and heavy chemical cleaning.

🎯 Fast-Acting Black Spot Removal – Oxidises lichen spores and ingrained black spots that standard pressure washing cannot remove.

💧 Economical Trade Dilution – Dilutes with water to suit light maintenance washing up to heavy organic restoration.

🧱 Multi-Surface Restoration – Suitable for Indian sandstone, concrete pavers, architectural masonry, and pool dosing.

📦 Bulk Trade Sizing – Supplied in heavy-duty 5L containers, multi-packs, and 25L drums engineered for trade operators.

Direction to use

📋 Commercial Application & Dilution Guide:

Dilution Ratios:Heavy Black Lichen / Stubborn Black Spots: Dilute 1 part Sodium Hypochlorite with 1 to 2 parts clean water (1:1 to 1:2), or apply neat on severe patches.General Patio Cleaning & Heavy Algae: Dilute 1 part Sodium Hypochlorite with 3 to 4 parts clean water (1:3 to 1:4).Routine Softwash Maintenance & Light Washing: Dilute 1 part with 5 to 9 parts clean water (1:5 to 1:9).

Application Technique:Ensure the target surface is clear of loose debris. Pre-wet adjacent lawns, garden borders, and ornamental plants thoroughly with fresh water before application. Apply evenly using a chemical-resistant low-pressure sprayer, watering can with fine rose, or softwash chemical pump. Allow 15 to 30 minutes dwell time while keeping the surface damp. Rinse thoroughly with high volumes of clean water to neutralise chemical residue.

💧 Precision Dosing Pump Guide (5L & 25L Drums):Depress your matching 30ml precision dosing pump directly into your mixing container or knapsack sprayer to prevent chemical splashing and skin contact.

Sizing and Availability

Standard Packaging: Supplied in heavy-duty 5L containers as standard for commercial refilling.

Bulk Trade Capacity: Fully stocked in heavy-duty 25L trade drums engineered for softwash rigs and facility teams.

Precision Dosing Add-On: A 30ml Precision Dosing Pump can be purchased and paired with all container sizes to ensure exact portion control, eliminate hazardous splashing, and prevent chemical waste.

Multi-Pack Trade Bundles: Available across 10 tailored configurations covering 5L single units, value multi-packs (2x5L, 3x5L, 4x5L), and 25L drums (with or without integrated precision dosing pumps).

Safety Information

🚨 Professional Industrial Chemical – Read full safety directions and Safety Data Sheet (SDS) before trade application. Contains concentrated Sodium Hypochlorite (14–15% Available Chlorine).

  • Hazard Classification: DANGER! Class 8 Corrosive & Class 9 Aquatic Hazard. H314: Causes severe skin burns and eye damage. H400 / H410: Very toxic to aquatic life with long-lasting effects. EUH031: Contact with acids liberates toxic chlorine gas.
  • ⚠️ Chemical Caution: KEEP PETS AND ANIMALS OFF TREATED AREAS UNTIL THOROUGHLY RINSED AND COMPLETELY DRY. Do not allow chemical wash run-off to enter fishponds, open streams, or surface drainage systems.
  • Mandatory PPE Required: Always wear chemical-resistant gloves (PVC/nitrile long-cuff), safety splash goggles or full-face visor, protective chemical apron/coveralls, and waterproof boots. Ensure adequate outdoor air circulation.
  • First Aid Response:IF IN EYES: Rinse cautiously with cold water for at least 15 minutes, holding eyelids open. Remove contact lenses if present and easy to do—continue rinsing. Seek urgent immediate medical attention. IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin thoroughly with plenty of running water for at least 15 minutes. Seek immediate medical attention. IF INHALED: Move operative into fresh air and keep comfortable for breathing. Seek medical advice. IF SWALLOWED: Rinse mouth thoroughly with water. DO NOT induce vomiting. Seek urgent immediate medical attention.
  • 📦 STORAGE INSTRUCTIONS: Store upright in original vented, UN-approved containers in a cool, well-ventilated chemical store away from direct sunlight, acids, and heat.

Shipping & Returns Compliance

📦 Trade Shipping & Safety Notice: Due to strict UK transport regulations, chemical safety handling protocols, and COSHH compliance, this product is classified as a hazardous/restricted liquid. Once delivered, this item is non-returnable if the factory safety seal, cap, or foil barrier has been broken or unsealed.


If your order arrives damaged, leaking, or compromised, please capture photographic proof immediately and contact our trade support desk within 48 hours. For our full structural breakdown, view our official Returns & Refunds Policy.

Technical Specifications & EN Standards

Active Substance: Sodium Hypochlorite ($NaOCl$) 14–15% available chlorine ($Cl_2$) at manufacture

Form / Appearance: Clear Pale Yellow/Greenish Liquid

Scent: Strong Characteristic Chlorine

pH Level: 12.5 – 14.0 (Strongly Alkaline Base)

Specific Gravity: ~1.20 – 1.25 g/cm³ at 20°C

UN Transport Code: UN 1791, Hypochlorite Solution, Class 8, PG II/III

Shelf Life: 6–12 Months (Sodium hypochlorite naturally degrades over time; store in cool, shaded conditions)

COSHH Documentation: Direct SDS PDF download link provided above.

🚨 Trade & Verified Business Users Only
Under UK CEPPR regulations, this chemical requires mandatory trade verification.
Photo ID & company details will be requested via email immediately after checkout prior to dispatch.
View full details
Your cart
Variant Variant total Quantity Price Variant total
Multex Sodium Hypochlorite 14-15% 25L - High-strength liquid chlorine for industrial water treatment and surface cleaning.
5L (Standard)
5L (Standard)
£19.99/ea
£0.00
£19.99/ea £0.00
Multex Sodium Hypochlorite 14-15% 25L - High-strength liquid chlorine for industrial water treatment and surface cleaning.
2 x 5L (Standard Bundle)
2 x 5L (Standard Bundle)
Regular price
£38.99
Sale price
£29.99/ea
£0.00
Regular price
£38.99
Sale price
£29.99/ea
£0.00
Multex Sodium Hypochlorite 14-15% 25L - High-strength liquid chlorine for industrial water treatment and surface cleaning.
3 x 5L (Standard Bundle)
3 x 5L (Standard Bundle)
Regular price
£58.99
Sale price
£39.99/ea
£0.00
Regular price
£58.99
Sale price
£39.99/ea
£0.00
Multex Sodium Hypochlorite 14-15% 25L - High-strength liquid chlorine for industrial water treatment and surface cleaning.
4 x 5L (Standard Bundle)
4 x 5L (Standard Bundle)
Regular price
£78.99
Sale price
£49.99/ea
£0.00
Regular price
£78.99
Sale price
£49.99/ea
£0.00
Multex Sodium Hypochlorite 14-15% 25L - High-strength liquid chlorine for industrial water treatment and surface cleaning.
25L (Standard)
25L (Standard)
Regular price
£98.99
Sale price
£59.99/ea
£0.00
Regular price
£98.99
Sale price
£59.99/ea
£0.00
Multex Sodium Hypochlorite 14-15% 25L - High-strength liquid chlorine for industrial water treatment and surface cleaning.
5L (Includes Precision Dosing Pump)
5L (Includes Precision Dosing Pump)
Regular price
£23.99
Sale price
£20.99/ea
£0.00
Regular price
£23.99
Sale price
£20.99/ea
£0.00
Multex Sodium Hypochlorite 14-15% 25L - High-strength liquid chlorine for industrial water treatment and surface cleaning.
2 x 5L (Includes Precision Dosing Pump)
2 x 5L (Includes Precision Dosing Pump)
Regular price
£43.99
Sale price
£30.99/ea
£0.00
Regular price
£43.99
Sale price
£30.99/ea
£0.00
Multex Sodium Hypochlorite 14-15% 25L - High-strength liquid chlorine for industrial water treatment and surface cleaning.
3 x 5L (Includes Precision Dosing Pump)
3 x 5L (Includes Precision Dosing Pump)
Regular price
£63.99
Sale price
£40.99/ea
£0.00
Regular price
£63.99
Sale price
£40.99/ea
£0.00
Multex Sodium Hypochlorite 14-15% 25L - High-strength liquid chlorine for industrial water treatment and surface cleaning.
4 x 5L (Includes Precision Dosing Pump)
4 x 5L (Includes Precision Dosing Pump)
Regular price
£83.99
Sale price
£50.99/ea
£0.00
Regular price
£83.99
Sale price
£50.99/ea
£0.00
25L (Includes Precision Dosing Pump)
25L (Includes Precision Dosing Pump)
Regular price
£103.99
Sale price
£62.99/ea
£0.00
Regular price
£103.99
Sale price
£62.99/ea
£0.00

View cart
0

Total items

£0.00

Product subtotal

Taxes included. Discounts and shipping calculated at checkout.
View cart