review of validation data, the U.S. Environmental Protection
Agency (EPA) has approved the use of Systea Scientific's new
non-hazardous nitrate method. The EPA determined that the
method meets all requirements at 40 CFR Part 136 for measurement
of nitrate and nitrite singly or combined in water and wastewater.
method eliminates problems associated with nitrate analysis
such as: matrix interferences, poor reproducibility and recovery,
hazardous waste generation and exposure of laboratory personnel
to carcinogenic compounds (hydrazine and cadmium) used in
methods 353.1 and 353.2.
new technology is the only USEPA
method available for nitrate analysis and is an alternative
to costly enzymatic methods. The new "green"
nitrate method is offered exclusively by Systea Scientific.