--- title: Cleanroom and Pharmaceutical Blog | EU GMP Annex 1 Update (4) description: EU GMP Annex 1 Update | Gain insights into the latest happenings in the world of cleanroom technology and equipment. (4) --- [![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 Hamish Hogg* #### PHSS 40th Annual Conference – delegates left stirred not shaken The [Pharmaceutical and Healthcare Sciences Society](https://phss.co.uk/) (PHSS) gave their annual conference the title ‘Challenges in Biological & Advanced Medicinal Therapeutic product (ATMP) manufacturing following GMP’ this year. With the revision of Annex 1 being released on the 25th August, shortly before the... [Read More](https://www.cherwell-labs.co.uk/cherwell-labs-post/phss-40th-annual-conference-delegates-left-stirred-not-shaken) ![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). 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