Passivation of Purified Water Systems

Established over 27 years ago, we at Transflow Industrial Cleaning Services are hugely experienced in providing chemical cleaning and industrial services to pharmaceutical, food, healthcare, power and related industries. Our personnel are highly trained, certified and approved in many services including specialist passivation, derouging, descaling, biofilm removal and sanitisation services on purified water, WFI, pure steam and product systems. If you’re looking for a company that can carry out the passivation of your purified water system, then you need to look no further than our team
who are experts in this field.


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    What is the passivation of a purified water system?

    The equipment and purified water systems used in the Pharmaceutical, food, healthcare and power industries are designed so that product contact surfaces are not reactive, additive, or absorptive, this means that the purified water won’t be altered or changed in any way. The passivation of a purified
    water system is concerned with the protection of stainless steel against corrosion and other damage by a naturally forming passive layer called the Chromium Oxide layer. If this is disrupted or damaged by cutting, welding, heating, grinding or through contact with chemicals, the stainless steel loses its protection against corrosion, thus impacting the purity of the water. The passivation of purified water systems is the necessary process whereby it is chemically treated to enhance and restore the ability of the treated surfaces to be resistant to corrosion. With Transflow, the passivation of a purified
    water system is achieved by applying a strong oxidizing agent (nitric acid) or a chelating agent (citric acid) to the stainless steel for maximum results.

    Our passivation of purified water systems services include:

    Quality control with comprehensive RAMS, COSHH reports and support documentation.
    High-quality equipment individual to each job – pumps, tanks, hoses, adaptors.
    Ferroxyl test to confirm the presence of a passive layer after the process.
    Off-site baths and immersion tanks with a clean room for drying, testing and wrapping.
    Vessel entry/confined space access.
    Optional derouging stage if required.
    Professional cleaning services if required.
    Paste passivation of small blemishes in clean rooms.
    Control of waste chemicals and disposal according to Environment Agency legislation.

    Transflow Industrial Services
    Transflow Industrial Services

    Why is passivation important?

    Passivation is naturally occurring in stainless steel and aims to provide greater protection against corrosion, however, proper passivation of systems where purified water is involved must be carried out prior to use. A stainless steel article that has been fabricated or welded may have contaminants such as metal oxides on the surface which in the long run will compromise the steel’s ability to resist corrosion and will undoubtedly impact the quality of the water.

    Our 5 Benefits of the Passivation of a Purified Water System…

    It removes surface contamination.
    It increases corrosion resistance.
    It reduces the risk of product contamination.
    It allows you to extend system maintenance intervals.
    It saves money and reduces downtime.

    What are the benefits of pickling and passivation? 

    Removes surface contamination. 
    Increased corrosion resistance. 
    Reduces the risk of product contamination. 
    Allows you to extend system maintenance intervals. 
    Saves money and reduces downtime. 
    Transflow Industrial Services

    For more information about the derouging and passivation of stainless steel or any of our other services, please don’t hesitate to get in touch with us today.

    Call Us Today: 020 8591 3875


    27+ Years of Experience

    We began in 1994 to service the expanding UK 
    Pharmaceutical industry where we have 
    continued to carry out specialist passivation, 
    derouging, descaling, biofilm removal and 
    sanitisation services on purified water, WFI, 
    pure steam and product systems for 27 years 
    and counting. 


    Fully-Trained& Certified Personnel

    All of our personnel are fully trained and
    certified in CCNSG Safety Passport, COSHH
    Training, Working at Height, ADR Chemical,
    Confined Space Access, Face Fit Testing for
    Respirators, Job Specific Chemicals Services
    Training, Ferroxyl Testing of Welds and more to
    guarantee your, and our, safety.


    Fully Comprehensive Selection of Services

    We have a fully comprehensive selection of 
    services available including specialist 
    passivation, derouging, descaling, biofilm 
    removal and sanitisation services on purified 
    water, WFI, pure steam and product systems. 
    So we can look after all your needs in-house.


    Huge Client Portfolio

    We are highly recognised in the industry for our 
    services and have provided our services to a 
    huge range of reputable clients and our 
    portfolio includes ThermoFisher Scientific, 
    AstraZeneca, Porton Biopharma, Merck, 3M 
    Healthcare and many more.