1. Clorura de sodiu p.a - 31 ron/kg -1xkg =31 ron 2. Solutie standard NaNO3, IN HNO3 0,5 mol/L, trasabila NIST, 1000 mg/l, Certipur 1702380500 -147 ron/500ml- 1x500ml=147 ron 3. Solutie standard KNO3 IN HNO3 0,5 mol/L, trasabila NIST, 1000 mg/l, Certipur -1702300500-151 ron/500 ml -1x500 ml= 151 ron 4. Solutie standard Ca(NO3)2, IN HNO3 0,5 mol/L trasabila NIST, 1000 mg/l, Certipur -1197780500- 145 ron/500 ml-1x500ml=145 ron 5. Solutie standard Mg(NO3)2 in HNO3 0,5 mol/L, trasabila NIST, 1000 mg/L, Certipur -1197880500 – 148 ron/500ml-1x500ml= 148 ron 6. Tratat de sodiu si de potasiu (C4H4KNaO6x4H2O, p.a) – 59 ron/kg-1xkg =59 ron 7. Eter de petrol p.a -16 ron/800ml – 7x800 ml=112 ron