| Specification | Typical Value | Notes |
| Concentration | 1000 $\text{mg/L}$ ($\text{ppm}$) $\text{Ca}^{2+}$ | The certified concentration of the calcium ion. |
| Matrix | $0.5 \text{M } \text{HNO}_3$ (Nitric Acid) | The acid used to stabilize the calcium in the solution and prevent precipitation/adsorption. Other matrices like dilute $\text{HCl}$ are also used. |
| Source Material | $\text{Calcium Nitrate}$ $\text{Ca}(\text{NO}_3)_2$ or $\text{Calcium Carbonate}$ $\text{CaCO}_3$ | The highly pure chemical used to prepare the standard. |
| Traceability | $\text{Traceable to NIST}$ $\text{SRM}$ | Confirms the concentration is verified against a Standard Reference Material from the $\text{National Institute of Standards}$ and $\text{Technology}$. |
| Uncertainty | Typically $\mathbf{\pm 0.2\%}$ to $\mathbf{\pm 1\%}$ | The expanded uncertainty of the certified concentration. |
| Form | Colorless Liquid | The physical appearance of the solution. |
| Grade | Certified Reference Material ($\text{CRM}$) or AAS/ICP Grade | Indicates the high quality and certification level required for instrument calibration. |
| CAS Number | $\text{N/A}$ (Mixture) | The solution is a mixture of water, acid, and the calcium source, so a single CAS number for the final product is typically not provided. |
Calcium Standard solution in pakistan
About This Item
UNSPSC Code:
41116107
NACRES:
NA.24
Available: Unlimit
