--- title: Cleanroom and Pharmaceutical Blog | Prepared media (6) description: Prepared media | Gain insights into the latest happenings in the world of cleanroom technology and equipment. (6) --- [![analytichem_Logo+claim_RGB](https://www.cherwell-labs.co.uk/hs-fs/hubfs/analytichem_Logo+claim_RGB.png?width=7907&height=1706&name=analytichem_Logo+claim_RGB.png "analytichem_Logo+claim_RGB")](https://www.cherwell-labs.co.uk/) [![analytichem_Logo+claim_RGB](https://www.cherwell-labs.co.uk/hs-fs/hubfs/analytichem_Logo+claim_RGB.png?width=7907&height=1706&name=analytichem_Logo+claim_RGB.png "analytichem_Logo+claim_RGB")](https://www.cherwell-labs.co.uk/) [![50th Logo Cherwell logo final](https://www.cherwell-labs.co.uk/hubfs/50th%20Logo%20Cherwell%20logo%20final.svg "50th Logo Cherwell logo final")](https://www.cherwell-labs.co.uk/50-years-of-cherwell) Search # Our Blog ### AnalytiChem UK (formerly Cherwell Laboratories) is a leading supplier of prepared microbiological media and environmental monitoring instrumentation for the pharmaceutical and related industries. ### I want to read about Select Option *By Gill Power* #### Cherwell reaches custom cleanroom product development milestone ### Company establishes new role of Director of Quality and Technology to oversee development of custom products for specific customer and market needs Bicester, UK, 25th June 2021: Cherwell Laboratories, specialists in cleanroom microbiology solutions, announces in its 50th anniversary year that it... [Read More](https://www.cherwell-labs.co.uk/cherwell-labs-post/cherwell-reaches-product-development-milestone-in-50th-year) ![GPT guide cta-min-1](https://www.cherwell-labs.co.uk/hs-fs/hubfs/GPT%20guide%20cta-min-1.png?width=300&height=196&name=GPT%20guide%20cta-min-1.png "GPT guide cta-min-1") #### Growth Promotion Testing: A Guide to Good Practices Get an in-depth understanding of key considerations and best practices when undertaking growth promotion testing (GPT). [![Download Guide](https://no-cache.hubspot.com/cta/default/2885977/5115d7a2-703f-4f11-b1f5-447e516585fc.png)](https://cta-redirect.hubspot.com/cta/redirect/2885977/5115d7a2-703f-4f11-b1f5-447e516585fc) [ *By Andy Whittard* #### New cleanroom standard for microbiological contamination BS EN 17141:2020 ](https://www.cherwell-labs.co.uk/cherwell-labs-post/new-cleanroom-standard-microbiological-contamination-bsen17141-2020) [ *By Andrew Barrow* #### Why Use Neutralisers in your Environmental Monitoring Plates? ](https://www.cherwell-labs.co.uk/cherwell-labs-post/2016/01/08/why-use-neutralisers-in-your-environmental-monitoring-plates) [ *By Gill Power* #### Cherwell launches support hub for Redipor prepared media distributors ](https://www.cherwell-labs.co.uk/cherwell-labs-post/cherwell-launches-support-hub-for-redipor-prepared-media-distributors) [ *By Gill Power* #### Cherwell prepared media accessories help reduce risk in EM ](https://www.cherwell-labs.co.uk/cherwell-labs-post/cherwell-prepared-media-accessories-help-reduce-risk-em) [ *By Andy Whittard* #### Why do my EM settle plates split? ](https://www.cherwell-labs.co.uk/cherwell-labs-post/why-do-em-settle-plates-split) [ *By Gill Power* #### How Cherwell ensures consistent quality of all prepared media ](https://www.cherwell-labs.co.uk/cherwell-labs-post/how-cherwell-ensures-consistent-quality-of-all-prepared-media) ### 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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