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Original price was: £395.00.£374.99Current price is: £374.99. 5% OFF
Original price was: £395.00.£374.99Current price is: £374.99. 5% OFF
✅ Europe’s Only Green Seal Certified HOCl Product
✅ Article 95 Listed UK Supplier
✅ Superior 500 PPM HOCl formulation
✅ Low-Salt 2g/L formula perfect for sensitive applications
✅ Independently Lab-Tested to EU Standards
✅ Regulated Under GB Biocidal Products Regulation
✅ Listed with the UK Health and Safety Executive (HSE)
✅ Non-Irritating, Non-Flammable & pH Balanced
✅ No Alcohol, No Harsh Chemicals, Eco-Friendly
✅ Subtle Scent, No Chemical Fumes
For businesses, care homes and cleaning contractors who need a reliable bulk supply of professional-grade disinfectant, the Optizan 4×20L pack delivers 80 litres of 500 ppm HOCl at one of the lowest per-litre prices in the UK.
Hypochlorous acid is the same molecule your white blood cells produce to fight infection. Unlike synthetic disinfectants, HOCl kills pathogens through a natural oxidation process — destroying cell walls without leaving toxic residue or harming surfaces. At 500 ppm, Optizan is 2.5× more concentrated than most competing HOCl products, delivering faster kill times without increasing health risk.
Many HOCl products on the market contain 200 ppm or less. Optizan’s biocidal dossier is based on a 500 ppm concentration — meaning you use less product per application and still achieve a higher kill rate. Our low-salt formula (under 2g/L versus ~5g/L in standard products) also makes it safe for sensitive applications, including electronics and soft furnishings.
✅ Europe’s only Green Seal® certified HOCl product
✅ Registered with UK HSE and Ireland’s DAFM
✅ Article 95 listed under GB Biocidal Products Regulation
✅ Independently lab-tested to EN 1276, EN 14476, EN 13704 & EN 1650
✅ COSHH-compliant — not classified as hazardous under CLP Regulations
✅ No PPE required for standard application
Yes. Optizan is suitable for use with ULV foggers, electrostatic sprayers, and backpack misters. No dilution required — use ready-to-spray at 500 ppm.
No. Optizan degrades safely into trace amounts of salt and water. No rinse required, even on food contact surfaces.
12 months from the manufacture date when stored in a cool, dark location. Once opened, use within 6 months for best efficacy.
Need more than 80L? View our 500L and 1000L IBC tote options →
Optizan’s 20 L hypochlorous acid solution offers maximum cost savings for high-volume sanitization needs. Perfect for facilities requiring constant disinfection or households looking to save up with bulk purchases.
Harness the power of your body’s own immune defense for everyday use.
Optizan uses hypochlorous acid (HOCl), a molecule naturally produced by your white blood cells to deliver powerful, non-toxic disinfection.
Unlike standard HOCl products that contain only 200 PPM, Optizan delivers 500 PPM of pure hypochlorous acid, providing 2.5x the concentration for superior disinfection performance and faster kill times on surfaces while maintaining a non-irritating formulation.
It’s as effective as bleach if not more at 200x lower concentrations without the toxic side effects.
With Optizan’s hypochlorous acid disinfectant you can clean and sanitise your home, workspace, or clinic, without harsh chemicals or toxic fumes.
Simply a cleaner clean. For people, surfaces & the planet.
McElwaine Technical Services Ltd is a registered Article 95 supplier under the Biocidal Products Regulations (BPR, (EU) 528/2012). The name ‘Optizan’ itself is derived from the works of 19th-century poet Emily Dickinson, referring to a ‘visionary’ or ‘person of discernment’.
Produced in Co Fermanagh, Northern Ireland, Optizan is manufactured by McElwaine Technical Services Ltd. We utilize advanced process controls that ensure every batch meets the same key parameters for FAC, ORP, and pH. This commitment to consistency is verified by independent labs, guaranteeing you receive a reliable, high-potency product every time.
Optizan has achieved the highest standards of verification:
First & Only Green Seal Certified HOCl Product In Europe
Optizan is the only hypochlorous acid (HOCl) product in Europe currently to achieve Green Seal Certification, meeting rigorous third-party standards that ensure our product protects both people and the planet. This exclusive certification among European HOCl products verifies our unmatched commitment to comprehensive health and environmental leadership throughout our entire product lifecycle.
Clinical Review by Clémence Guiraut, M.Sc. in Immunology – Former biomedical researcher at McGill University and Sainte-Justine Research Centre
Laboratory Testing to European Norm (EN) Standards, including:
Backed by Regulatory Registrations:
Product Specifications
| Weight | 80 kg |
|---|---|
| Dimensions | 27 × 21 × 44 cm |
robert wilson –
Perfect for our warehouse operations. Great value for bulk cleaning
mark.evans –
Good product for large areas. Delivery was prompt but containers
are quite heavy.
julie_clean –
Running a commercial cleaning business and this bulk order saves us a fortune. Much safer for our staff than traditional chemicals and clients are impressed with the professional results. The 20L containers are easy to handle and store.
helen.carter –
Excellent for our school. Safe around children and staff appreciate no harsh fumes.
michelle_fm –
Outstanding product for commercial use. Safe, effective, and economical in bulk quantities.