Procedure for Preparation of Barium Sulfate Particle Standards
| Standard number 1 should be prepared using a 0.100 mg/mL Barium Sulphate stock solution. Prepare this by mixing 900 μL of Sodium Azide stock solution with 100 μL of 1 mg/mL Barium Sulphate stock solution and then proceed as follows: | |||
|---|---|---|---|
| Std number | Conc (mg/mL) | Volume of Sodium Azide Stock Required (μL) | Volume of Barium Sulphate (0.100 mg/mL) Stock Required (μL) |
| 1 | 0.001 | 990 | 10 |
| Standards 2-7 should be prepared using the 1mg/mL Barium Sulphate stock solution | |||
|---|---|---|---|
| Std number | Conc (mg/mL) | Volume of Sodium Azide Stock Required (μL) | Volume of Barium Sulphate (1 mg/mL) Stock Required (μL) |
| 2 | 0.005 | 995 | 5 |
| 3 | 0.010 | 990 | 10 |
| 4 | 0.025 | 975 | 25 |
| 5 | 0.050 | 950 | 50 |
| 6 | 0.100 | 900 | 100 |
| 7 | 0.200 | 800 | 200 |