William H. Ukers (author)
- filtrate yields color upon addition of phenolphthalein and standard alkali ⟨pink color after two fillings⟩
the filtrate from two fillings of the filter yields a pink color upon the addition of phenolphthalein and one drop of the standard alkali
judge verdicts (2)
- groundedness 0.70 pass — The claim is substantially supported by the passage. The text explicitly states that 'the filtrate from two fillings of the filter yields a pink color upon the addition of phenolphthalein and one drop of the standard alkali.' The claim accurately captures this requirement, though it slightly rewords 'one drop of the standard alkali' as simply 'standard alkali,' which is a minor rewording that doesn't substantively alter the meaning.
- qualifier_fidelity 0.75 pass — One qualifier issue: the claim states the filtrate 'yields color upon addition of phenolphthalein and standard alkali,' but the passage specifies it yields a PINK color specifically. The object should be more precise - it's not just any color from adding those substances, but specifically pink. The quote is verbatim and accurate, perspective/stance/sentiment are correct (neutral assertion by the author), time qualifiers are appropriately null, and context correctly specifies 'pink color after two fillings.' Minor precision issue in the object predicate but overall fidelity is high enough to pass.