{
  "title": "Blood-cell counter: saved HS6 panel decision",
  "frozen_at": "2026-09-09",
  "source": {
    "file": "usa_deu.pdf",
    "pdf_page": 69,
    "printed_page": 10,
    "tariff_item": "228(a)",
    "statistical_code": "9180.020",
    "description": "Optical instruments: Haemacytometers, frames, mountings, and parts",
    "representative_line_id": "usa_deu_extracted__r00591",
    "review_line_id": "hs6_classifier_ready_with_schedule_country__r32244",
    "source_pdf_sha256": "679308b3c3edea3a3450a1d3976383a4d641388b53f78ee948db88dbe497ab67"
  },
  "ledger": {
    "file": "post_processing/Torquay/torquay_correspondence_full_postprocessed.csv",
    "sha256": "7aa4d7d7d4cabdd378d1ea6a872f47e6331ab0b2500935c05e3cc2fd6132bca6",
    "source_row": 591
  },
  "description": "Exact code sets and concise reasoning summaries from saved successful responses. The independent reviews displayed are the repaired reviews after candidate expansion, not the first calls. This is not a human-ground-truth benchmark.",
  "reviews": [
    {
      "stage": "Independent review after candidate expansion",
      "model_id": "gpt-5.5",
      "model_label": "GPT 5.5 High Intelligence",
      "source_file": "model_a_repair_outputs.jsonl",
      "source_line": 2506,
      "codes": [
        "901890",
        "902780",
        "903140",
        "903180",
        "903190",
        "903300"
      ],
      "confidence_score": 55,
      "mapping_type": "uncertain",
      "human_review_required": true,
      "concise_reasoning_summary": "The line identifies haemacytometers within an optical-instrument schedule and expressly includes frames, mountings, and parts. A haemacytometer can plausibly fall under medical instruments n.e.s., analytical/laboratory apparatus, or optical/measuring instruments, while the parts wording could require a parts/accessories code; the evidence does not show which HS heading governs."
    },
    {
      "stage": "Independent review after candidate expansion",
      "model_id": "Gemini 3.1 Pro (High)",
      "model_label": "Gemini 3.1 Pro High via Antigravity CLI",
      "source_file": "model_b_repair_outputs.jsonl",
      "source_line": 2506,
      "codes": [
        "901890",
        "902750",
        "902780",
        "902790",
        "903140",
        "903190"
      ],
      "confidence_score": 40,
      "mapping_type": "uncertain",
      "human_review_required": true,
      "concise_reasoning_summary": "The line covers haemacytometers and their parts. It is uncertain whether haemacytometers fall under medical instruments (9018), analytical instruments (9027), or optical measuring/checking devices n.e.s. (9031), and the line also includes parts which may fall in the respective parts headings."
    },
    {
      "stage": "Arbitration",
      "model_id": "claude-opus-4-8",
      "model_label": "Claude Opus 4.8 XHigh Reasoning",
      "source_file": "arbitrator_outputs.jsonl",
      "source_line": 10448,
      "codes": [
        "901890",
        "902780",
        "902790",
        "903140",
        "903190"
      ],
      "confidence_score": 40,
      "mapping_type": "uncertain",
      "human_review_required": true,
      "concise_reasoning_summary": "A haemacytometer is one laboratory cell-counting instrument, so the competing codes reflect uncertainty over the governing heading — medical 9018, analytical 9027, or optical measuring/checking 9031 — rather than a genuinely broad multi-product line. Disputed codes 902750 (apparatus using optical radiations), 903180 (non-optical, but the line is explicitly optical) and 903300 (residual chapter-90 parts displaced by 903190/902790) are excluded, while 902790 survives only as the 9027 parts code; the principal heading cannot be safely chosen from the 1950 schedule wording, so human review is required."
    },
    {
      "stage": "Final escalation",
      "model_id": "gpt-5.5",
      "model_label": "GPT 5.5 Extra High Intelligence",
      "source_file": "final_escalator_outputs.jsonl",
      "source_line": 1773,
      "codes": [
        "902780",
        "902790"
      ],
      "confidence_score": 70,
      "mapping_type": "one_to_many",
      "human_review_required": false,
      "concise_reasoning_summary": "A haemacytometer is a laboratory counting/analysis apparatus for blood or cell samples, best supported within heading 9027 rather than medical instruments used directly on patients or generic optical measuring/checking headings. Because the line expressly includes complete haemacytometers plus frames, mountings, and parts, both the 9027 residual instrument code and the 9027 parts/accessories code are retained."
    }
  ],
  "final_codes": [
    "902780",
    "902790"
  ],
  "independent_review_intersection": [
    "901890",
    "902780",
    "903140",
    "903190"
  ],
  "interpretation": "The final code set differs from all three prior proposals. An intersection-only rule would omit 902790. The later reviews retained it because the source includes parts, after selecting the analytical-instrument heading.",
  "audit_separation": "The 13.4% versus 1.5% error comparison displayed elsewhere evaluates tariff extraction against a human-transcribed subset. It does not measure the accuracy of this HS6 classification.",
  "raw_logs_directory": "data/output_automerge_english_opus48_w10"
}