Method B vs Method A

Verdict, claim by claim

6 claims, every one citing evidence. 2 rejected by the validator. No probabilities are used.

• ObservedBase added at color flip was 2.5 mL in Method B vs 4 mL in Method A, a difference of -1.5 mL, which is outside normal variation of ±1.
• ContradictedMixing time per addition was 4.8 s in Method B vs 4.4 s in Method A, a difference of 0.4 s, which is within normal variation of ±0.7.
• Possible explanationWater source was tap in Method B vs distilled in Method A, while the protocol specifies distilled and none of the 5 reference runs used tap.
• ObservedLiquid temperature (22.6 °C vs 21.6 °C), starting color a* (4.3 a* vs 3.9 a*), and air quality (122.1 raw vs 120.3 raw) were within normal variation; vinegar bottle (Bottle A), protocol steps performed, mixing per addition (3.0 inversions), sample volume (10.0 mL), dilution volume (20.0 mL), and indicator drops (3.0 drops) were identical.
• Missing evidenceBase solution batch was not measured, so it cannot be ruled out as a factor.
• Missing evidenceAir humidity was not measured, so it cannot be ruled out as a factor.