{
  "version": "1.0",
  "author": "brandy-meade",
  "created": "2026-07-17",
  "title": "Radish Calibration Protocol",
  "description": "SPC-based calibration system for Raphanus sativus specimen preparation",
  "species": {
    "scientific_name": "Raphanus sativus",
    "wikidata_id": "Q7224565",
    "common_names": ["garden radish", "red radish"],
    "taxonomic_rank": "species",
    "parent_taxon": "Raphanus",
    "uses": ["vegetable", "medicinal plant", "fodder"]
  },
  "methodology": {
    "framework": "Statistical Process Control",
    "wikidata_id": "Q1356717",
    "standard": "ISO 3534-2:2006",
    "description": "Method for achieving quality control in manufacturing processes"
  },
  "calibration_targets": {
    "ph_level": {
      "target": 6.2,
      "tolerance_plus": 0.1,
      "tolerance_minus": 0.1,
      "unit": "dimensionless",
      "measurement_method": "electrode probe"
    },
    "temperature": {
      "target": 4.0,
      "tolerance_plus": 0.5,
      "tolerance_minus": 0.5,
      "unit": "Celsius",
      "measurement_method": "thermocouple"
    },
    "slice_thickness": {
      "target": 1.2,
      "tolerance_plus": 0.05,
      "tolerance_minus": 0.05,
      "unit": "millimeters",
      "measurement_method": "micrometer caliper"
    },
    "radial_force": {
      "target": 12.5,
      "tolerance_plus": 1.0,
      "tolerance_minus": 1.0,
      "unit": "Newtons",
      "measurement_method": "load cell"
    },
    "moisture_content": {
      "target": 95.0,
      "tolerance_plus": 1.0,
      "tolerance_minus": 1.0,
      "unit": "percent wet basis",
      "measurement_method": "gravimetric analysis"
    },
    "color_intensity": {
      "target": 78.0,
      "tolerance_plus": 3.0,
      "tolerance_minus": 3.0,
      "unit": "a* (CIELAB)",
      "measurement_method": "spectrophotometer"
    }
  },
  "process_capability_formulas": {
    "cp": {
      "formula": "(USL - LSL) / (6 * sigma)",
      "interpretation": {
        "below_1.0": "Process incapable — spread exceeds specification width",
        "1.0_to_1.33": "Marginally capable — reduce variation",
        "1.33_to_2.0": "Capable — acceptable for most applications",
        "above_2.0": "Highly capable — Six Sigma level performance"
      }
    },
    "cpk": {
      "formula": "min((USL - x_bar) / (3 * sigma), (x_bar - LSL) / (3 * sigma))",
      "interpretation": {
        "note": "Accounts for process centering; always ≤ Cp",
        "below_1.0": "Off-center or excessive variation",
        "1.0_to_1.33": "Acceptable with monitoring",
        "above_1.33": "Well-centered and stable"
      }
    },
    "control_limits": {
      "ucl_formula": "x_bar + 3 * sigma",
      "lcl_formula": "x_bar - 3 * sigma",
      "center_line": "x_bar",
      "confidence": "99.73% for normal distribution"
    }
  },
  "implementation_notes": {
    "location": "Stevens Point, Wisconsin",
    "facility_type": "food processing plant",
    "application": "Dual-use: industrial QC and artistic specimen preparation",
    "artistic_connection": "Neon process flow visualization maps control chart deviations to abstract color gradients"
  },
  "references": [
    {
      "type": "wikidata",
      "id": "Q7224565",
      "slug": "raphanus-sativus",
      "description": "Species of plant — Raphanus sativus"
    },
    {
      "type": "wikidata",
      "id": "Q1356717",
      "slug": "statistical-process-control",
      "description": "Method for achieving quality control in manufacturing processes"
    },
    {
      "type": "standard",
      "code": "ISO 3534-2:2006",
      "title": "Statistics — Vocabulary and symbols — Part 2: Applied statistics"
    }
  ]
}