--- title: Cherwell | Guide on Sterility Testing Published description: "Cherwell publishes a guide on sterility testing including: the sterility test principle; what the expectations are within the pharmacopoeia and GMP; key considerations in the sterility testing process; how to tackle a sterility test failure and practical steps to minimise risk of contamination" image: https://www.cherwell-labs.co.uk/hubfs/Sterility%20Testing%20Guide-1.jpg --- [![analytichem_Logo+claim_RGB](https://www.cherwell-labs.co.uk/hs-fs/hubfs/analytichem_Logo+claim_RGB.png?width=200&height=43&name=analytichem_Logo+claim_RGB.png "analytichem_Logo+claim_RGB")](https://www.cherwell-labs.co.uk/) [![Analytichem](https://www.cherwell-labs.co.uk/hs-fs/hubfs/analytichem_Logo+claim_RGB.png?width=200&height=56&name=analytichem_Logo+claim_RGB.png "Analytichem")](https://www.cherwell-labs.co.uk/) Search # Cherwell Publishes Guide on Sterility Testing ![](https://www.cherwell-labs.co.uk/hubfs/Marketplace/Cherwell%20Labs/imgs/icons/cherwell-icon-45.svg) *By Gill Power* ## The user’s guide to regulatory expectations, the testing process, what to do in the event of test failure, and more Bicester, UK, 19th March 2019: Cherwell Laboratories, specialist suppliers of products for [environmental monitoring](https://www.cherwell-labs.co.uk/environmental-monitoring-information) and [sterility process validation](https://www.cherwell-labs.co.uk/cherwell-labs-post/how-to-validate-your-sterility-test-bacteriostasis-and-fungistasis), has published an eBook titled, “Failure is not an option: Why sterility testing is so important”, which is available to [download from Cherwell’s website](https://www.cherwell-labs.co.uk/why-sterility-testing-is-so-important-lp). [![New call-to-action](https://no-cache.hubspot.com/cta/default/2885977/be8d393e-7063-495a-8ebe-992d6238e31f.png)](https://cta-redirect.hubspot.com/cta/redirect/2885977/be8d393e-7063-495a-8ebe-992d6238e31f) The guide offers a full overview of sterility testing including why the sterility test is such an important requirement for the manufacture of sterile products. It provides some practical steps that will help ensure the standards as set out by the European Pharmacopoeia and GMP are met. The eBook also addresses the role of environmental monitoring programs and how these are critical to successful sterility testing, product quality and business reputation. Andy Whittard, Cherwell Laboratories’ Managing Director comments: “While we recognise that sterility testing is a critical step in ensuring that pharmaceutical products are safe for human use, we also all know that the test is not perfect. Therefore, we have put together this eBook to offer some guidance and practical steps to overcome the challenges involved with sterility testing. Our guide will help the reader mitigate the risk of sterility test failure for their facility by using better processes and continuous environmental monitoring methods.” Topics covered within the eBook include: the sterility test principle; what the expectations are within the pharmacopoeia and GMP; key considerations in the sterility testing process; how to tackle a sterility test failure and practical steps to minimise risk of contamination. You can now download the new [sterility testing guide](https://www.cherwell-labs.co.uk/why-sterility-testing-is-so-important-lp) here. With over thirty five years’ experience in manufacturing [Redipor prepared media](https://www.cherwell-labs.co.uk/prepared-culture-media/) and within [environmental monitoring](https://www.cherwell-labs.co.uk/environmental-monitoring-information) applications, Cherwell has expertise in delivering high quality products and services to their clients.  The company is flexible and reactive to the individual needs of its customers and is adept at working with customers to offer bespoke solutions to accommodate customers’ unique needs. Comments ## Read other blog articles [ *By Gill Power* #### Specialist products for boosting microbial EM protocol reliability spotlighted by AnalytiChem UK at Pharmig 2025 ](https://www.cherwell-labs.co.uk/cherwell-labs-post/analytichem-uk-highlight-specialist-em-products-pharmig-2025-annual-conference) [ *By Gill Power* #### New AnalytiChem UK appointment strengthens customer focus and growth strategy ](https://www.cherwell-labs.co.uk/cherwell-labs-post/new-analytichem-uk-appointment-strengthens-customer-focus-and-growth-strategy) [ *By Gill Power* #### Cherwell announces Andy Whittard’s retirement and names Stuart Hall as new Managing Director ](https://www.cherwell-labs.co.uk/cherwell-labs-post/cherwell-announces-andy-whittards-retirement-stuart-hall-named-new-managing-director) ### Sign Up for our Blog We promise that we won't SPAM you. #### What's next #### Recent news [![Specialist products for boosting microbial EM protocol reliability spotlighted by AnalytiChem UK at Pharmig 2025](https://www.cherwell-labs.co.uk/hs-fs/hubfs/Redipor%20TwistLock%20Contact%20Plates%20with%20GS1%20DataMatrix%20Codes.png?width=50&height=50&name=Redipor%20TwistLock%20Contact%20Plates%20with%20GS1%20DataMatrix%20Codes.png) **Specialist products for boosting microbial EM protocol reliability spotlighted by AnalytiChem UK at Pharmig 2025** 10 November 2025 ](https://www.cherwell-labs.co.uk/cherwell-labs-post/analytichem-uk-highlight-specialist-em-products-pharmig-2025-annual-conference) [![New AnalytiChem UK appointment strengthens customer focus and growth strategy](https://www.cherwell-labs.co.uk/hs-fs/hubfs/Tom%20Pickford%20AnalytiChem%20UK%20Business%20Development%20Manager%20Midlands.jpg?width=50&height=50&name=Tom%20Pickford%20AnalytiChem%20UK%20Business%20Development%20Manager%20Midlands.jpg) **New AnalytiChem UK appointment strengthens customer focus and growth strategy** 20 October 2025 ](https://www.cherwell-labs.co.uk/cherwell-labs-post/new-analytichem-uk-appointment-strengthens-customer-focus-and-growth-strategy) #### Subscribe Receive the latest articles as they are published. #### Contact us Registered Office 7 & 8 Launton Business Centre, Murdock Road, Bicester, OX26 4XB **Phone** Tel: +44 (0) 1869 355 500 **Email** [sales.uk@analytichem.com](mailto:sales.uk@analytichem.com)    ![analytichem_Logo+claim_RGB](https://www.cherwell-labs.co.uk/hs-fs/hubfs/analytichem_Logo+claim_RGB.png?width=2000&height=431&name=analytichem_Logo+claim_RGB.png "analytichem_Logo+claim_RGB") ![BSI-ISO-9001-Certified-50px](https://www.cherwell-labs.co.uk/hs-fs/hubfs/BSI-ISO-9001-Certified-50px.png?width=130&height=77&name=BSI-ISO-9001-Certified-50px.png "BSI-ISO-9001-Certified-50px") AnalytiChem UK ©2025 (Formerly Cherwell) Reg. in England No: 01159518 VAT Reg. 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