Environmental laboratory
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Sigma-Aldrich (USA) provides a wide range of Certified Reference Materials and Proficiency Testing suited to environmental testing. Whether your analysis is on drinking water, or more contaminated water, Sigma Aldrich can supply a wide variety of CRMs, including inorganics and organics and physical properties, such as water hardness and colour. There are several products available as whole volume samples, which are ready-to-use, or as concentrates, which need to be diluted to a specific volume prior to use.
IET 36.3 May