William H. Ukers (author)
King's percolator, using filter paper, in 1912
judge verdicts (2)
- groundedness 1.00 pass — The claim is directly stated in the passage: 'King's percolator, using filter paper, in 1912' explicitly confirms that King's percolator was introduced in 1912 and used filter paper.
- qualifier_fidelity 1.00 pass — All qualifiers are faithful to the passage. The viewpoint is correctly attributed to the author (the passage itself states the information without attribution to a named source). The stance 'asserts' matches the declarative nature of the passage. Sentiment is neutral, appropriate for a factual historical statement. The time qualifier correctly specifies 1912 as both when and valid_from, with valid_to as null since the passage provides no end date. The context 'filtration field' accurately reflects the passage's framing, as King's percolator is discussed within a section explicitly about 'the filtration field'. The quote 'King's percolator, using filter paper, in 1912' appears verbatim in the passage and directly supports the claim that King's percolator was introduced in 1912.