{
  "seed": 20261027,
  "dimensional_tolerances_mm": {"inlet_radius": 0.01, "outlet_radius": 0.01, "outlet_land_length": 0.1},
  "supply_tube": {"length_mm": 10, "radius_mm": 1.25},
  "surface_tension_N_m": 0.07,
  "contact_angle_cosine_bound": 1.0,
  "pressure_sensor": {"common_offset_Pa": 22, "independent_noise_sigma_Pa": 12},
  "balance_noise_sigma_mg": 0.2,
  "collection_time_s": 20,
  "collection_repeats": 5,
  "slope_acceptance_relative_error": 0.01,
  "dose": {"target_mm3": 100, "nominal_flow_mm3_s": 20, "on_time_s": 5, "tolerance_mm3": 1, "liquid_volume_mm3": 500, "bulk_modulus_Pa": 2000000000, "ambient_pressure_Pa": 101325},
  "notes": "All tolerances, sensor errors, surface properties and dose requirements are declared synthetic design inputs, not measured specifications. These cases extend the steady fluid study with a derived resistance/compliance model."
}