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DA37828429 · közzétéve 04.04.2025 · lezárva 04.04.2025 · ettől: Protar Service S.R.L. (Buzau)
1.Solutie standard de nitrit 1000mg/l NO2, material de referinta certificat- 1 fl 500 ml; 2. Solutie tampon pH=7,01 pentru calibrare pH-metru Hanna221-1 fl 500 ml; 3. Solutie tampon pH=9,18 pentru calibrare pH-metru Hanna221-1 fl 500 ml; 4. Solutie tampon pH=7,00(25°), material de referinta certificat-1 fl 500 ml; 5. Solutie conductivitate 1410µS/cm(25°C), material de referinta certificat-1 fl 500 ml; 6. Solutie standard aluminiu, 1000mg/l, in acid azotic0,5mol/l, trasabila NIST-1 fl 100 ml; 7. Solutie standard arsen, 1000mg/l, in acid azotic0,5mol/l, trasabila NIST-1 fl 100 ml; 8. Solutie standard mangan, 1000mg/l, in acid azotic0,5mol/l, trasabila NIST-1 fl 100 ml; 9. Solutie standard nichel, 1000mg/l, in acid azotic0,5mol/l, trasabila NIST-1 fl 100 ml. reactivii trebuie sa fie de puritate analitica, sa fie ambalati in recipienti originali ai producatorului, sigilati si etichetati.