Natural Resources Wales trading as Natural Resources Wales Analytical Services (NRWAS)/Gwasanaethau Dadansoddol Cyfoeth Naturiol Cymru (GDCNC)

Assessment Manager: JY Page 1 of 10 Schedule of Accreditation issued by United Kingdom Accreditation Service 2 Pine Trees, Chertsey Lane, Staines-upon-Thames, TW18 3HR, UK 7991 Accredited to ISO/IEC 17025:2017 Natural Resources Wales trading as Natural Resources Wales Analytical Services (NRWAS)/ Gwasanaethau Dadansoddol Cyfoeth Naturiol Cymru (GDCNC) Issue No: 034 Issue date: 23 September 2025 Faraday Building Swansea University Singleton Campus Swansea SA2 8PP Contact: Mr David Johns Tel: +44 (0) 300 065 3443 E-Mail: David.Johns@cyfoethnaturiolcymru.gov.uk Website: www.naturalresourceswales.gov.uk Testing performed at the above address only DETAIL OF ACCREDITATION Materials/Products tested Type of test/Properties measured/Range of measurement Standard specifications/ Equipment/Techniques used WATERS Chemical Tests Documented In-House Methods based on Standing Committee of Analysts Methods using: Natural, estuarine and saline General Inorganic Analysis Formaldehyde Spectrophotometric Techniques Method Number LL I 6.5 Test Code 383 SOLIDS including SLUDGE, SEDIMENT and PLANT/FISH/BIOTA and ANIMAL TISSUES General Inorganic Analysis Particle Size Distribution Laser Diffraction Method Number LL I Particle Size Laser LL I 9.4 Test Code 1370 Inorganic Analysis Loss on Ignition Gravimetric Techniques Method number LL ME TS 11.9 Test Code 97 Mercury Fluorescence Detection Method number LL ME Hg 10.8 Test Code 345 (dry WT) Test Code 355 (wet WT) Test Code 1042 (sediment Marine (<2mm) Test Code 1082 (HF <63mm)