Solutie buffer 6.865 NIST/DIN -cod 51350054 Mettler
Solutie standard calibrare turbiditate, formazina 1,0 NTU,MRC
Solutie buffer 10.012 NIST/DIN , 250ml - cod 51350058 Mettler
Resorcinol, for analysis, ExpertQ®, Reag. Ph Eur ,100g -cod RE00830100 Scharlau
Titriplex® III - solutie concentrata for 1000 ml, c(Na₂-EDTA 2 H₂O) = 0.1 mol/l Titrisol® -cod 1099920001 Merck
Solutie standard de nitrit, CRM trasabil la SRM din NIST 0,...
Solutie buffer 6.865 NIST/DIN -cod 51350054 Mettler
Solutie standard calibrare turbiditate, formazina 1,0 NTU,MRC
Solutie buffer 10.012 NIST/DIN , 250ml - cod 51350058 Mettler
Resorcinol, for analysis, ExpertQ®, Reag. Ph Eur ,100g -cod RE00830100 Scharlau
Titriplex® III - solutie concentrata for 1000 ml, c(Na₂-EDTA 2 H₂O) = 0.1 mol/l Titrisol® -cod 1099920001 Merck
Solutie standard de nitrit, CRM trasabil la SRM din NIST 0,200 mg/l NO2-N in H2O, Merck, cod 1250410100
Solutie standard de amoniu,CRM,trasabila la SRM din NIST 6,00 mg/l NH4-N în H2O-cod 1250250100 Merck
Solutie standard de nitrat, CRM,trasabila la SRM din NIST 15,0 mg/l NO3-N în H2O-cod 1250380100 Merck