What PT4 Covers
PT4 disinfectants are biocidal products regulated under the UK GB BPR for food and feed area hygiene. They are used to disinfect equipment, containers, utensils, surfaces, and pipework in food production, processing, catering, and beverage manufacturing environments.
PT4 chlorine dioxide is used both for surface and clean-in-place (CIP) disinfection and for fresh produce washing, where it reduces microbial load and can help extend shelf life.
Key Applications
Food Processing Equipment
Disinfection of conveyors, tanks, and processing lines to support food safety management systems.
Dairy & Beverage Production
CIP and surface disinfection for dairy plants, breweries, and beverage manufacturing.
Fresh Produce Washing
Wash water treatment for fruit and vegetables, reducing microbial load and extending shelf life.
Catering & Food Preparation
Surface and equipment hygiene in kitchens, catering, and food preparation areas.
Why Chlorine Dioxide for PT4?
Chlorine dioxide suits food and feed hygiene because it is effective against food-spoilage organisms, forms no trihalomethanes or chloramines, leaves low residue at label concentrations, and performs well in CIP systems and produce wash water. Its inorganic by-products, chlorite and chlorate, are controlled through dosing, rinsing where specified, and monitoring.
Effective Against Spoilage Organisms
Controls Listeria, Salmonella, E. coli, yeast, and mould relevant to food safety.
Low Residue, Managed By-Products
No surfactant film and no halogenated organic by-products; chlorite and chlorate are kept low by correct dosing and any specified rinse.
Works in CIP Systems
Suitable for clean-in-place disinfection of pipework, tanks, and closed equipment.
Wide pH Range
Maintains efficacy across pH 4-10, unlike chlorine which weakens above pH 7.5.
Extends Shelf Life
Reduces microbial load on fresh produce, helping to extend product shelf life.
HACCP Compatible & BPR Compliant
Supports HACCP food safety systems and complies with UK GB BPR for PT4 use.
Dosing & Compliance Notes
Typical chlorine dioxide (ClO₂) dose and residual figures below are indicative starting points. Always confirm site-specific dosing with a competent water treatment adviser.
| Application | Typical ClO₂ dose / residual | Key standard |
|---|---|---|
| Fresh produce wash water | 1-5 mg/L ClO₂ in wash water, short contact | BPR PT4 / HACCP |
| CIP final rinse disinfection | Dose to a measurable residual, then potable rinse | BPR PT4 |
| Hard surface disinfection | Apply per product dilution, contact then rinse | BPR PT4 |
| Equipment & container hygiene | Apply per product dilution to cleaned surfaces | BPR PT4 |
Produce wash and CIP figures are indicative. Always confirm dosing, contact times, and any required potable rinse with your food safety team and a competent adviser.
BPR Compliance
All ChloroKlean PT4 products comply with UK GB BPR and EU Biocidal Products Regulation requirements. Safety data sheets and technical data sheets are available on request for every product.
Related Resources
Frequently Asked Questions
Need PT4 Food Hygiene Solutions?
Contact our team for PT4 chlorine dioxide product recommendations and dosing guidance for your food processing, beverage, or produce handling application.