Dorim achizitia la pachet a urmatorilor reactivi de laborator : 1.-Acid sulfuric 95-97%(culoare max.10 Hazen;nitrati max.0.2ppm;subst.rer.KMnO4 max.0.2ppm.-1 litru. 2.Fosfat monopotasic(Kh2PO4)-min.99.5%;pH(5%,apa)4.2-4.5;rezidiu uscare max.0.2% -250gr. 3.Isooctan,pentru analize gaz-cromatografice.Rezidiu evaporare:max.3.0mg/l;apa :max.0.01%;GC/ECD.Lindan:max.3.0pg/ml.-1 litru. 4.N-(1 naftil)etilen diamina diclorhidrat(C12H...
Dorim achizitia la pachet a urmatorilor reactivi de laborator : 1.-Acid sulfuric 95-97%(culoare max.10 Hazen;nitrati max.0.2ppm;subst.rer.KMnO4 max.0.2ppm.-1 litru. 2.Fosfat monopotasic(Kh2PO4)-min.99.5%;pH(5%,apa)4.2-4.5;rezidiu uscare max.0.2% -250gr. 3.Isooctan,pentru analize gaz-cromatografice.Rezidiu evaporare:max.3.0mg/l;apa :max.0.01%;GC/ECD.Lindan:max.3.0pg/ml.-1 litru. 4.N-(1 naftil)etilen diamina diclorhidrat(C12H16CL2N2)min 98%(pentru determinare nitriti);1-naftilamina max.0.1%;2-naftilamina max0.1%.-5 gr. 5.Sulfanilamida conc.min.99%pa;Rezidiu de uscare(105gr.C)max.0.5%;Cloruri max.0.01%;Sulfati max.0.02%;Metale max.0.002% - 100 gr. 6.Clorura de calciu,sol.volumetrica,1 mol/l.,factor 1 plus/minuso.001,certificat de incertitudine.-1 litru. 7.Buffer ph 7.00-la 25 gr.C-standard ph,conf.ISO Ghid 34 si SR EN ISO 177025/2005-500ml. 8.Buffer ph 4.o1-la 25 gr.C-standard ph,conf.ISO Ghid 34 si SR EN ISO 17025/2005-500ml. 9.Buffer ph.9.21-la 25 gr.C-standard ph,conf.ISO Ghid 34 si SR EN ISO 17025/2005-500ml. 10.Azotat de argint(peste99.8%,plumb max.0.001%,zinc sub 0.0001%-50gr. 11.N,Ndimetil para fenilen diamina clorhidrat(N,N Dimetyl-1,4 phenylendiammonium diclorhide)(peste 99,5%ioni sulfati max.0.005%.-50gr. 12.Pararozanilina(puritate min.85%;la lungimea de unda 543-549nm c=0.003g/L;50%Ethanol -50gr. 13.Aldehida salicilica(98%impuritati max.1%fenol,densitate 1.146%g/ml...100ml -100 ml. 14.Creatinina(anhidra,puritate min.98%0)-25gr. 15.Acid mandelic(puritate min.99%).-25gr. 16.Tiocianat de mercur(ca max.50mg/kg;Cd max 50mg/kg;puritate peste 97%).
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