glavni
Instrument i metar
TR-208B Portable COD Ammoniak Nitrogen Meter
TR-408 COD Amoniac Total Nitrogen Phosphorus Total Nitrogen Determinator (keke printer)
TR900 Portable Multiparameter Water Quality Analyzer
TR-103S Nitrite Determinator (Economy)
TR-103 Nitrite Determinator (keke printer)
Uspješna operacija!