Limit of Detection: Difference in Pour-Plate and MF Recovery Methods
| Dilution | Date | Analyst | Avg Count Pour-Plate Method (CFU) | Avg Count MF Method (CFU) | Difference |
|---|---|---|---|---|---|
| 1:128 | Day 1 | Analyst 1 | 4 | 7 | 3 |
| 1:128 | Day 1 | Analyst 2 | 5 | 7 | 2 |
| 1:128 | Day 2 | Analyst 1 | 4 | 5 | 2 |
| 1:128 | Day 2 | Analyst 2 | 10 | 11 | 1 |
| 1:128 | Day 3 | Analyst 1 | 5 | 9 | 4 |
| 1:128 | Day 3 | Analyst 2 | 8 | 11 | 3 |
| 1:128 | Day 4 | Analyst 2 | 3 | 4 | 1 |
| 1:128 | Day 5 | Analyst 2 | 4 | 6 | 3 |
| 1:128 | Day 6 | Analyst 1 | 4 | 9 | 5 |
| 1:128 | Day 7 | Analyst 1 | 7 | 7 | 0 |
| Average Difference | 2.2 | ||||
| Standard deviation of Difference | 1.6 |