Arsenit de sodiu - solutie,c(NaAsO₂) = 0.05 mol/l (0,1 N) Titripur® Reag. USP-L-1-175.00lei Solutie standard de crom,Cr(NO₃)₃ in HNO₃ 0.5 mol/l, trasabila NIST, 1000 mg/l Cr Certipur®-100ML-1-94.00lei Solutie standard de zinc,Zn(NO₃)₂ in HNO₃ 0.5 mol/l, trasabila NIST; 1000 mg/l Zn Certipur®-100ML-1-94.00lei Solutie standard de sodiu NaNO₃ in H₂O trasabila NIST 1000 mg/l Na Certipur®-500ML-1-131.00lei Potasiu - solutie standard,KNO₃ in HNO₃ 0.5 mol/l, trasabila NIST, 1000 mg/l K Certipur®-500ML-1-132.00lei Fenol,cristalizat,for analysis, ExpertQ®, ACS, Reag. Ph Eur-250G-1-126.00lei Solutie standard de calciu Ca(NO₃)₂ in HNO₃ 0.5 mol/l, trasabila NIST; 1000 mg/l Ca Certipur®-500ML-1-127.00lei Azotat de potasiu pentru analiza, EMSURE® ISO,Reag. Ph Eur-500G-1-113.50lei Acid sulfamic ReagentPlus®, ≥99%-5G-1-240.00lei Iodura de potasiu pa-Kg-1-339.60lei