Confezionamento | Codice | Disponiblita Spagna | Disponibilità Italia | Prezzo netto |
---|---|---|---|---|
x 1 l :: Plastic bottle | SO20071000 | Disponibile | 0 - contatta i ns.uffici | Acquista |
Confezionamento | Codice | Disponiblita Spagna | Disponibilità Italia | Prezzo netto |
---|---|---|---|---|
x 250 ml :: Plastic bottle | SO20070250 | Acquista |
- Density: ~ 1,005 g/cm3
- Solub. in water: (20 ºC): miscible
- Tariff number: 3822 00 00 00
- Applications: This reference material is intended for the calibration of pH meters and electrodes used for pH measurement or as a control sample for measuring the pH value.
SPECIFICATIONS
pH at 20 ºC: 7,00
specification range: 6,99 - 7,01
uncertainty : ± 0,01
Composition per litre is 3,5 g Potassium dihydrogen phosphate and 12,5 g di-Sodium hydrogen phosphate. Contains preservative.
Standard buffer solutions are prepared using gravimetric and volumetric procedures. The batch value is determined by measurement with a combination glass electrode against five-point calibration according to DIN 19268. This pH buffer solution is traceable to Standard Reference Material from NIST.
0: 7,13
5: 7,07
10: 7,05
15: 7,02
20: 7,00
25: 6,98
30: 6,98
35: 6,96
40: 6,95
45: 6,95
50: 6,95
Pagina del catalogo
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