Application
This standard substance can be used as a working standard for daily analysis and testing; it can also be used for instrument calibration, analytical method confirmation and evaluation, measurement process quality control, and technical arbitration and certification evaluation.
Sample Preparation
This standard substance is prepared using prochloraz (CAS: 67747-09-5) whose purity has been accurately determined as the solute, methanol as the solvent, and the weight-volume method in a clean laboratory at room temperature of 20±3°C.
Characteristic value and expanded uncertainty
| Component | Standard value | Expanded uncertainty (k=2) | Matrix |
Prochloraz
| 1000μg/mL
| 3% | methanol |
The expanded uncertainty of the standard value is mainly synthesized by the uncertainty of raw material purity, weighing, constant volume, uniformity, and long-term stability.
Packaging, storage and use
Packaging: This standard material is packaged, and the specification 1.2mL should be protected from shattering when carried or transported. Storage and use: Keep it under refrigerated airtight and protected from light. Before use, it should be balanced at room temperature (20±3℃) and shake well to ensure uniformity. Once the ampoule is opened, it should be used immediately. It cannot be used as a standard substance after being re-sealed. Strictly prevent contamination during use.
