---
title: Riboflavin Test for Vessels | Spray Device Testing
description: Riboflavin test for vessels confirms CIP spray device coverage inside tanks. Non-destructive checks highlight blind spots and optimise cleaning.
---
[](https://www.inoxpassivation.co.uk/)
[](https://www.inoxpassivation.co.uk/)
- [Home](https://www.inoxpassivation.co.uk)
- About
- [Who We Are](https://www.inoxpassivation.co.uk/who-we-supply-how-we-help)
- Who We Help
- [Pharma & Medical](https://www.inoxpassivation.co.uk/passivation-process-pharmaceutical-industry)
- [Food And Beverage](https://www.inoxpassivation.co.uk/food-and-beverage-biofilm-removal)
- [Power Generation](https://www.inoxpassivation.co.uk/steel-plant-cleaning)
- Services
- [Passivation](https://www.inoxpassivation.co.uk/stainless-steel-passivation-process)
- [Derouging](https://www.inoxpassivation.co.uk/derouging-stainless-steel)
- [Oxygen Cleaning](https://www.inoxpassivation.co.uk/oxygen-cleaning-procedure)
- [Pickling & Passivation](https://www.inoxpassivation.co.uk/pickling-of-stainless-steel)
- [Biofilm Removal](https://www.inoxpassivation.co.uk/biofilm-removal)
- [Riboflavin Testing](https://www.inoxpassivation.co.uk/riboflavin-testing-for-vessels)
- [Pre-Commissioning Flushing](https://www.inoxpassivation.co.uk/chilled-water-system-flushing-procedure)
- [Carbon Steel Pickling](https://www.inoxpassivation.co.uk/pickling-of-carbon-steel-pipe)
- Resources
- [Blog](https://www.inoxpassivation.co.uk/blog)
- [FAQs](https://www.inoxpassivation.co.uk/faqs)
- [Case Study](https://www.inoxpassivation.co.uk/case-study-rapid-system-re-passivation-for-a-pharmaceutical-manufacturer)
- [Downloads](https://www.inoxpassivation.co.uk/downloads)
More results
[Prepare For Your Pharma Audit](https://www.inoxpassivation.co.uk/surface-integrity)
[Prepare For Your Pharma Audit](https://www.inoxpassivation.co.uk/surface-integrity)
- [Home](https://www.inoxpassivation.co.uk)
- About
- [Who We Are](https://www.inoxpassivation.co.uk/who-we-supply-how-we-help)
- Who We Help
- [Pharma & Medical](https://www.inoxpassivation.co.uk/passivation-process-pharmaceutical-industry)
- [Food And Beverage](https://www.inoxpassivation.co.uk/food-and-beverage-biofilm-removal)
- [Power Generation](https://www.inoxpassivation.co.uk/steel-plant-cleaning)
- Services
- [Passivation](https://www.inoxpassivation.co.uk/stainless-steel-passivation-process)
- [Derouging](https://www.inoxpassivation.co.uk/derouging-stainless-steel)
- [Oxygen Cleaning](https://www.inoxpassivation.co.uk/oxygen-cleaning-procedure)
- [Pickling & Passivation](https://www.inoxpassivation.co.uk/pickling-of-stainless-steel)
- [Biofilm Removal](https://www.inoxpassivation.co.uk/biofilm-removal)
- [Riboflavin Testing](https://www.inoxpassivation.co.uk/riboflavin-testing-for-vessels)
- [Pre-Commissioning Flushing](https://www.inoxpassivation.co.uk/chilled-water-system-flushing-procedure)
- [Carbon Steel Pickling](https://www.inoxpassivation.co.uk/pickling-of-carbon-steel-pipe)
- Resources
- [Blog](https://www.inoxpassivation.co.uk/blog)
- [FAQs](https://www.inoxpassivation.co.uk/faqs)
- [Case Study](https://www.inoxpassivation.co.uk/case-study-rapid-system-re-passivation-for-a-pharmaceutical-manufacturer)
- [Downloads](https://www.inoxpassivation.co.uk/downloads)
[Contact Us](https://www.inoxpassivation.co.uk/contact-us)
# Riboflavin Test For Vessels
[Request A Quote](https://www.inoxpassivation.co.uk/request-a-quote)
## Ensuring Effective Cleaning
Spray device testing is a [crucial process](https://www.inoxpassivation.co.uk/blog/riboflavin-testing-for-equipment-safety) in the pharmaceutical industry to ensure that clean-in-place (CIP) systems effectively clean all areas of a vessel. By ensuring proper spray device coverage, manufacturers can maintain high standards of cleanliness and prevent contamination in their production processes.
[Book A Consultation](https://www.inoxpassivation.co.uk/speak-to-an-expert)
.webp?width=600&height=400&name=Riboflavin%20Testing%20(1).webp)
---
---
## Frequently Asked Question
What is riboflavin testing?
The purpose of riboflavin testing is to determine the effectivity of the spray-devices fitted to your equipment. It uses riboflavin solution – vitamin B2 – which fluoresces brightly under a UV light.
The internal surfaces of your equipment are sprayed with riboflavin solution and inspected with a UV light to [ensure full coverage](https://www.inoxpassivation.co.uk/blog/importance-of-riboflavin-testing). A standard CIP cycle is then carried out – with water. This should be performed at the flow-rate, pressure and time that future cycles would be subject to. The internal surfaces are inspected with UV light again – to determine that all traces of riboflavin have been successfully washed away. Areas that were not cleaned sufficiently are noted in our report. It may be necessary to modify the CIP cycle and/or spray-device in order to clean the equipment 100%.
Please note; as per ASME BPE – “The test is not intended to demonstrate cleanability, but rather the ability to deliver cleaning solutions to the target surfaces.”
Is riboflavin testing safe for my equipment?
Yes. Riboflavin solution is a natural product – vitamin B2 and is fully water soluble. In most cases, we use the client’s own circulation equipment and water to carry out the work. If required, we can bring our own pumps (with variable speed drives) to replicate the flow/pressure of the proposed system.
How often do I need to carry out riboflavin testing?
Ordinarily, just the once – as part of the Factory Acceptance Testing (FAT) prior to commissioning. It is sometimes requested years into service after issues with the CIP cycle is identified. This can often help to identify wear-and-tear or misalignment of the spray-devices.
[Back to top](https://www.inoxpassivation.co.uk/riboflavin-testing-for-vessels#top)
## Speak To An Expert
### Submit A Question Or Enquiry And Speak To One Of Our Experts To Find Out More!
Submit an enquiry with your question, to give us a brief or to request a call back from one of our experts.
**When you get in touch with INOX:**
We'll contact you back as soon as we are able to
We'll always aim to provide 'best advice' for your business
We offer a free initial consultation
Your information is treated in the strictest confidence
**You can ask us for advice or help on any or all of the following: **
- Passivation
- Derouging
- Oxygen Cleaning
- Biofilm Removal
- Riboflavin Testing
- Pre-Commissioning Flushing
- Carbon Steel Pickling
**Simply confirm your details on the form provided and we'll be in touch ASAP. We look forward to hearing from you!**
Related Articles
## From Our Blog
[Why Citric Acid Is Used For Passivation of Stainless Steel](https://www.inoxpassivation.co.uk/blog/citric-acid-passivation-stainless-steel)
[Passivation Of Stainless Steel](https://www.inoxpassivation.co.uk/blog/tag/passivation-of-stainless-steel)
#### Why Citric Acid Is Used For Passivation of Stainless Steel
September 24, 2026 1 min read
[The Benefits Of Chemical Cleaning For Stainless Steel Equipment](https://www.inoxpassivation.co.uk/blog/what-are-the-benefits-of-stainless-steel-chemical-cleaning)
[Passivation Of Stainless Steel](https://www.inoxpassivation.co.uk/blog/tag/passivation-of-stainless-steel)
#### The Benefits Of Chemical Cleaning For Stainless Steel Equipment
September 17, 2026 2 min read
[6 Key Main Differences Between ASTM A380 vs A967 Passivation Processes](https://www.inoxpassivation.co.uk/blog/differences-between-astm-a380-vs-a967)
-1.png)
[Passivation Of Stainless Steel](https://www.inoxpassivation.co.uk/blog/tag/passivation-of-stainless-steel)
#### 6 Key Main Differences Between ASTM A380 vs A967 Passivation Processes
September 8, 2026 2 min read
[Subscribe to Our Blog](https://www.inoxpassivation.co.uk/blog)
---
[](https://www.inoxpassivation.co.uk/)
[sales@inoxpassivation.com](mailto:sales@inoxpassivation.com)
[+44 01226 107077](tel:+441226107077)
Business Village
Innovation Way
Barnsley
S75 1JL
- 
- 
About
- Who We Supply & How We Help
Who We Help
- [Pharma & Medical](https://www.inoxpassivation.co.uk/passivation-process-pharmaceutical-industry)
- [Food & Beverage](https://www.inoxpassivation.co.uk/food-and-beverage-biofilm-removal)
- [Power Generation](https://www.inoxpassivation.co.uk/steel-plant-cleaning)
Services
- [Passivation](https://www.inoxpassivation.co.uk/stainless-steel-passivation-process)
- [Derouging](https://www.inoxpassivation.co.uk/derouging-stainless-steel)
- [Oxygen Cleaning](https://www.inoxpassivation.co.uk/oxygen-cleaning-procedure)
- [Pickling & Passivation](https://www.inoxpassivation.co.uk/pickling-of-stainless-steel)
- [Biofilm Removal](https://www.inoxpassivation.co.uk/biofilm-removal)
- [Riboflavin Testing](https://www.inoxpassivation.co.uk/riboflavin-testing-for-vessels)
- [Pre-commission Flushing](https://www.inoxpassivation.co.uk/chilled-water-system-flushing-procedure)
- [Carbon Steel Pickling](https://www.inoxpassivation.co.uk/pickling-of-carbon-steel-pipe)
Resources
- [Blogs](https://www.inoxpassivation.co.uk/blog)
- Testimonials
- [Case Study](https://www.inoxpassivation.co.uk/case-study-rapid-system-re-passivation-for-a-pharmaceutical-manufacturer)
- [FAQs](https://www.inoxpassivation.co.uk/faqs)
- [Contact Us](https://www.inoxpassivation.co.uk/contact-us)
- [Chemical Passivation: The Process](https://www.inoxpassivation.co.uk/chemical-passivation-of-stainless-steel-pillar-page)
Copyright © 2026 INOX Passivation. Website by [JDR Group](https://www.jdrgroup.co.uk/)
- [Terms and Conditions](https://144263954.hs-sites-eu1.com/terms-and-conditions)
- [Cookie Policy](https://144263954.hs-sites-eu1.com/cookie-policy)
- [Privacy Policy](https://144263954.hs-sites-eu1.com/privacy-policy)
- [Terms and Conditions of Hire](https://www.inoxpassivation.co.uk/terms-and-conditions-of-hire)
- Company Number: 12055500
- VAT: 330802244
```json
{
"@context" : "https://schema.org",
"@type" : "LocalBusiness",
"address" : {
"@type" : "PostalAddress",
"addressCountry" : "UK",
"addressLocality" : "Barnsley",
"postalCode" : "S75 1JL",
"streetAddress" : "Innovation Way, Business Village"
},
"alternateName" : "Inox Passivation",
"contactPoint" : {
"@type" : "ContactPoint",
"areaServed" : "GB",
"availableLanguage" : "en",
"contactType" : "customer service",
"telephone" : "+44 1226 107077"
},
"geo" : {
"@type" : "GeoCoordinates",
"latitude" : 53.5511,
"longitude" : -1.5016
},
"image" : "https://www.inoxpassivation.co.uk/hs-fs/hubfs/who%20we%20supply%20and%20who%20we%20help.webp",
"logo" : "https://www.inoxpassivation.co.uk/hs-fs/hubfs/Images/InoxPassivation-Logo.webp?width=275&height=79&name=InoxPassivation-Logo.webp",
"name" : "Inox Passivation Ltd",
"openingHours" : [ "Mo 09:00-18:00", "Tu 09:00-18:00", "We 09:00-18:00", "Th 09:00-18:00", "Fr 09:00-18:00", "Sa Closed", "Su Closed" ],
"priceRange" : "£",
"sameAs" : [ "https://x.com/PassivationInox", "https://www.linkedin.com/company/inox-passivation/" ],
"telephone" : "+44 01226 107715",
"url" : "https://www.inoxpassivation.co.uk/"
}
```
```json
{
"@context": "https://schema.org",
"@type": "FAQPage",
"mainEntity": [{
"@type": "Question",
"name": "What is riboflavin testing?",
"acceptedAnswer": {
"@type": "Answer",
"text": "The purpose of riboflavin testing is to determine the effectivity of the spray-devices fitted to your equipment. It uses riboflavin solution – vitamin B2 – which fluoresces brightly under a UV light.
The internal surfaces of your equipment are sprayed with riboflavin solution and inspected with a UV light to ensure full coverage. A standard CIP cycle is then carried out – with water. This should be performed at the flow-rate, pressure and time that future cycles would be subject to. The internal surfaces are inspected with UV light again – to determine that all traces of riboflavin have been successfully washed away. Areas that were not cleaned sufficiently are noted in our report. It may be necessary to modify the CIP cycle and/or spray-device in order to clean the equipment 100%.
Please note; as per ASME BPE – “The test is not intended to demonstrate cleanability, but rather the ability to deliver cleaning solutions to the target surfaces.”"
}
},{
"@type": "Question",
"name": "Is riboflavin testing safe for my equipment?",
"acceptedAnswer": {
"@type": "Answer",
"text": "Yes. Riboflavin solution is a natural product – vitamin B2 and is fully water soluble. In most cases, we use the client’s own circulation equipment and water to carry out the work. If required, we can bring our own pumps (with variable speed drives) to replicate the flow/pressure of the proposed system."
}
},{
"@type": "Question",
"name": "How often do I need to carry out riboflavin testing?",
"acceptedAnswer": {
"@type": "Answer",
"text": "Ordinarily, just the once – as part of the Factory Acceptance Testing (FAT) prior to commissioning. It is sometimes requested years into service after issues with the CIP cycle is identified. This can often help to identify wear-and-tear or misalignment of the spray-devices."
}
}]
}
```
```json
{
"@context" : "https://schema.org",
"@type" : "WebPage",
"description" : "Riboflavin test for vessels confirms CIP spray device coverage inside tanks. Non-destructive checks highlight blind spots and optimise cleaning.",
"inLanguage" : "en-GB",
"name" : "Riboflavin Test for Vessels | Spray Device Testing",
"publisher" : {
"@type" : "Organization",
"logo" : {
"@type" : "ImageObject",
"url" : "https://www.inoxpassivation.co.uk/hs-fs/hubfs/Images/InoxPassivation-Logo.webp"
},
"name" : "Inox Passivation Ltd",
"url" : "https://www.inoxpassivation.co.uk/"
},
"url" : "https://www.inoxpassivation.co.uk/riboflavin-testing-for-vessels"
}
```
```json
{
"@context" : "https://schema.org",
"@type" : "BreadcrumbList",
"itemListElement" : [ {
"@type" : "ListItem",
"item" : "https://www.inoxpassivation.co.uk/",
"name" : "Home",
"position" : 1
}, {
"@type" : "ListItem",
"item" : "https://www.inoxpassivation.co.uk/riboflavin-testing-for-vessels",
"name" : "Riboflavin / Spray Device Testing",
"position" : 2
} ]
}
```