| Source of Variation | Sum of Squares | Degrees of Freedom | Mean Square | Fo | fcritical | P value | Significant |
| Collector | 30.44 | 3 | 10.15 | 0.67 | 3.24 | 0.583 | No |
| Frother | 44.24 | 3 | 14.75 | 0.97 | 3.24 | 0.431 | No |
| Interaction | 221.94 | 9 | 24.66 | 1.63 | 2.54 | 0.189 | No |
| Error | 242.78 | 16 | 15.17 |
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| Total | 539.41 |
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