TOC is an analytic technique to measure water quality during the drinking water purification process. It provides an important role in quantifying the amount of natural organic matter (NOM) in the water source. SCP SCIENCE manufactures all common standards and reagents to meet your lab needs. Our laboratory prepares these standards following guidelines from “Standards Methods for Examination of Water and Wastewater” which make them compliant with the American Public Health Associations (APHA), American Water Works Association (AWWA) and Water Environment Federation (WEF).