IV Drip Rate Calculator implementation

Binding contract

This record describes what an executable surface must bind and validate. It does not claim that a public calculator, package, or production route is deployed.

Record owner

Guth Instruments

Lifecycle

verified-clean

Evidence ID

t4-050

Effect

Computation or source lookup only

Input and validation requirements

Yes. A zero-time input creates undefined divisions and must be rejected. An unlabeled time value creates a convention hazard with a 60-fold rate discrepancy between minutes and hours.

Required corrections

No binding erratum is attached to this unique-name record. Implementers must still preserve the declared units, domain, and failure behavior.

Inspectable interface fixture

The sample below is evidence for interface and validation tests, not a production implementation.

{
  "inputs": {
    "volume_ml": 1000,
    "time": 8,
    "time_unit": "hr",
    "drop_factor_gtt_per_ml": 15,
    "calculate": [
      "gtt/min",
      "mL/hr"
    ]
  },
  "expected_outputs": {
    "gtt_per_min": 31.25,
    "ml_per_hr": 125
  },
  "working": "Convert time: 8 hr × 60 min/hr = 480 min. gtt/min = (1000 mL × 15 gtt/mL) ÷ 480 min = 15000 ÷ 480 = 31.25 gtt/min. mL/hr = 1000 mL ÷ 8 hr = 125 mL/hr."
}

Other records

Sources and evidence

These pointers bind the page to evidence. They do not grant authority or collapse verification into deployment.

• VERIFIED_LEDGER.json
• evidence-tranche4/tranche4-results.json