1. Soluţie tampon (fosfat diacid de potasiu/fosfat acid disodic)trasabil la SRM de la NIST şi PTB pH 7.00 (25°C) Certipur®, 500 ml 2 2. Soluţie tampon trasabil la SRM de la NIST şi PTB pH 4.01 (25°C) Certipur, 500 ml 1 3. Soluţie tampon (acid citric/sodă caustică/acid clorhidric), trasabil la SRM de la NIST şi PTB pH 2.00 (25°C) Certipur 500 ml 1 4. Spectroquant® Nitrat 0.10 - 25.0 mg/l NO₃-N 0.4 - 110.7 mg/l NO₃⁻ , 250 tes...
1. Soluţie tampon (fosfat diacid de potasiu/fosfat acid disodic)trasabil la SRM de la NIST şi PTB pH 7.00 (25°C) Certipur®, 500 ml 2 2. Soluţie tampon trasabil la SRM de la NIST şi PTB pH 4.01 (25°C) Certipur, 500 ml 1 3. Soluţie tampon (acid citric/sodă caustică/acid clorhidric), trasabil la SRM de la NIST şi PTB pH 2.00 (25°C) Certipur 500 ml 1 4. Spectroquant® Nitrat 0.10 - 25.0 mg/l NO₃-N 0.4 - 110.7 mg/l NO₃⁻ , 250 teste 2 5. Conductivity Standard 147 uS/cm at 25°C, 500 ml 1 6. Conductivity Standard 1413 uS/cm at 25°C , 500 ml 1 7. Conductivity Standard 111.3 mS/cm at 25°C, 500 ml 1 8. Soluţie tampon (fosfat hidrogen disodiu/hidroxid de sodiu)trasabil la SRM de la NIST şi PTB pH 12.00 (25°C) Certipur, 30 x 30 ml 1 9. Potassium Chloride KCl 3 mol/l, 250 ml 1 10. Ammonium Standard Solution, CRM traceable to SRM from NIST 0.400 mg/L NH₄-N in H₂O 100 ml 1 11. Ammonium Standard Solution, CRM, traceable to SRM from NIST 0.250 mg/l NH₄ in H₂O, 100 ml 1 12. Solutie standard de amoniu NH₄Cl in H₂O trasabila NIST 1000 mg/l NH₄ Certipur 500 ml 1 13. Silver nitrate solution, Standard solution for volumetric analysis, 0.02M, (0.02N), 1 l 1 14. Solutie standard de clorura NaCl in H₂O trasabila NIST 1000 mg/l Cl Certipur®, 500 ml 1 15. Soluţie standard clorură, CRM trasabil la SRM de la NIST 10,0 mg/l Cl în H₂O, 100 ml 1 16. Clorura de sodiu - Sodium chloride volumetric standard, secondary reference material for argentometry, traceable to NIST SRM Certipur, 80 g 1 17. Solutie standard
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