Table 1 Example of Working Standard Dilution Scheme(s)
Working Standard | Use one of the stock standard solution and dilute to prepare working standards in 10 mL volumetric flasks 1000 µg/mL (Standard A); or 100 µg/mL (Standard B); [mL] | Stock Standard A Approximate Working Standard Concentration [µg/mL] | Stock Standard B Approximate Working Standard Concentration [µg/mL] |
|---|---|---|---|
Blank | 0 | 0 | 0 |
1 | 0.250 | 25 | 2.5 |
2 | 1.000 | 50 | 5.0 |
3 | 2.000 | 200 | 20.0 |
4 | 3.000 | 300 | 30.0 |
5 | 4.000 | 400 | 40.0 |
6 | 5.000 | 500 | 50.0 |
7 | Use "as is" | 1000 | 100.0 |