Industrial effluent streams can introduce heavy metal contamination into aqueous systems. Heavy metals can then migrate to any plant or animal life which uses this water. Fish and other aquatic life are obviously the most affected. Because heavy metals do not break down, they will bio-accumulate up the food chain. Atomic absorption spectroscopy (AAS) and inductively coupled plasma (ICP) are the analytical techniques most often used to determine the presencand levels of heavy metals in foods. We offer multiple certified reference materials (CRMs) calibration and operation of AAS and ICP instruments. TraceCERT® certified reference materials (CRM) are developed and produced in an accredited laboratory, fulfilling both ISO 17025 and ISO Guide 34 requirements. All are traceable to at least two independent references (i.e. NIST, BAM or SI unit kg) and include comprehensive documentation.