tag:www.gov.uk,2005:/search/guidance-and-regulation Guidance and regulation from Government Chemist 2025-04-17T17:30:00+01:00 HM Government tag:www.gov.uk,2005:/guidance/submit-a-referee-sample-to-the-government-chemist 2025-04-17T17:30:00+01:00 Submit a referee sample to the Government Chemist Guidance for local authorities, port health authorities and food traders on how to submit a sample for referee analysis. tag:www.gov.uk,2005:/government/publications/detection-of-genetically-modified-rice-at-the-uk-border-advice 2020-07-10T00:00:00+01:00 Detection of genetically modified rice at the UK border - advice Advice note prepared by Dr Michael Walker on behalf of the Government Chemist, regarding the detection of genetically modified rice at the UK border tag:www.gov.uk,2005:/guidance/submit-a-supplementary-expert-opinion-sample 2014-07-10T16:01:00+01:00 Submit a second expert opinion sample Guidance for food traders on how to submit a sample to the Government Chemist for second expert opinion.