1. N,N-Diethyl-p-phenylenediamine sulfate, 97% (DPD) – 173 lei/50g, livrare 4 saptamani; 1 flacon(50g) x 173 = 173 lei 2. Acid orto-fosforic, 85% p.a. – 47 lei/l, in stoc; 1l x 47 = 47 lei 3. Hidroxid de potasiu p.a. – 30 lei/kg, in stoc; 1kg x 30 = 30 lei 4. Fier - solutie standard, Fe(NO3)3 in HNO3 0.5 mol/l, trasabila NIST, 1000 mg/l Fe CertiPUR® (Merck 1.19781.0100) – 100 lei/100ml, livrare 3 saptamani, sub rezerva stoc...
1. N,N-Diethyl-p-phenylenediamine sulfate, 97% (DPD) – 173 lei/50g, livrare 4 saptamani; 1 flacon(50g) x 173 = 173 lei 2. Acid orto-fosforic, 85% p.a. – 47 lei/l, in stoc; 1l x 47 = 47 lei 3. Hidroxid de potasiu p.a. – 30 lei/kg, in stoc; 1kg x 30 = 30 lei 4. Fier - solutie standard, Fe(NO3)3 in HNO3 0.5 mol/l, trasabila NIST, 1000 mg/l Fe CertiPUR® (Merck 1.19781.0100) – 100 lei/100ml, livrare 3 saptamani, sub rezerva stocurilor la furnizor; 1 flacon(100ml) x 100 = 100 lei 5. Clorura - solutie standard, NaCl in H2O, trasabila NIST, 1000 mg/l Cl- CertiPUR® (Merck 1.19897.0500) – 137 lei/500ml, livrare 3 saptamani, sub rezerva stocurilor la furnizor; 1 flacon(500ml) x 137 = 137 lei 6. Amoniac sol. 25% p.a. – 12 lei/l, in stoc; 2l x 12 = 24 lei