REACTIVI LABORATOR

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. pH 7.00 at 20 C coloured Potassium Dihydrogen Phosphate/di- Sodium Hydrogen Phosphate, 500 ml 2 3. Soluţie tampon trasabil la SRM de la NIST şi PTB pH 4.01 (25°C) Certipur, 500 ml 2 4. Conductivity Standard 147 uS/cm at 25°C, , – Lot 1 500 ml 1 5. Conductivity Standard 147 uS/cm at 25°C, – Lot 2 500 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. Potassium Chloride KCl 3 mol/l, 250 ml 1 9. Ammonium Standard Solution, CRM traceable to SRM from NIST 0.400 mg/L NH₄-N in H₂O, 100 ml 1 10. Ammonium Standard Solution, CRM, traceable to SRM from NIST 0.250 mg/l NH₄ in H₂O, 100 ml 1 11. Ammonium standard solution certified reference material 1000 mg/l NH₄, 500 ml 1 12. Chloride standard solution certified reference material 1000 mg/l Cl, 500 ml 1 13. Nitrite standard solution certified reference material 1000 mg/l NO₂, 500 ml 1 14. Citrat tri-sodic dihidrat pentru analiza, EMSURE® ACS,ISO,Reag. Ph Eur, 1 kg 2 15. Calcium Chloride 0.01M (0.02N), C, 500 ml 1 16. Conductivity Standard 12880 uS/cm at 25 C, 500 ml 1 17. Titriplex® III; Titriplex® III for analysis (ethylenedinitrilotetraacetic acid, disodium salt dihydrate) ACS,ISO,Reag. Ph Eur., 250 g 3 18. Ammonia solution, 25%, for analysis, 1000 ml 2 19. Nitrate standard solution certified reference material 1000 mg/l NO₃, 500 ml 1