Acid azotic Ultra Quality 69% (ultra trace analysis) - 1L Acid sulfuric 95-97% GR pentru analiza ISO - 2.5 L Solutie standard de cadmiu, Cd(NO3)2 in HNO3 0.5 mol/l, trasabila NIST; 1000 mg/l Cd Certipur -100ml Cupru - solutie standard AAS,Cu in HNO3 2%, trasabila NIST, 1000 mg/l Cu - 100 ml Fier - solutie standard AAS, Fe in HNO3 2%, trasabila NIST, 1000 mg/l Fe - 100 ml Mangan - solutie standard AAS, Mn in HNO3 2%, trasabila NIST, 1000 mg/l Mn - 100 ml Nichel - solutie standard AAS, Ni in HNO3 2%, trasabila NIST, 1000 mg/l Ni - 100 ml Sodium chloride volumetric standard, secondary reference material for argentometry, 80g Membrane CME, sterile, albe, gridate, 47mm, 0.45 microni, 600 buc/set - 1 set Solutie tampon, trasabila NIST si PTB, pH 7.00 (20°C) - 1L Clorura de potasiu - solutie (nominal 1.41 mS/cm), MRC (c=0.01 mol/l) Certipur, 30x30ml