Founded in 1982, NSI Solutions is a manufacturer and certifier of reference materials reagents and proficiency testing samples for applications, ranging from classical water chemistry and microbiology to solid and hazardous waste analysis. Located in Raleigh, N.C., it offers an array of products, including preservation snips, E.coli, Enterococcus, GGA Concentrate Snips, Chlorine Check Standard Snips, oil/grease surrogate snips and BNA surrogate snip. The company is ISO-9001:2000, ISO-34, ISO-35, ISO-43-1, 2, ILAC G13:2007 and ISO-17025 certified.