Breath-Test Foundation
Which Alcotest records may matter in a New Jersey DWI case?
A breath-test number is not reviewed alone. New Jersey requires a sufficient foundation, and the relevant record set may include the operator, instrument, calibration, control solutions, observation period and the individual test sequence.
The principal record categories
Operator and individual test
- Operator identity and qualification records.
- Observation-period evidence.
- Test sequence and result printouts.
- Timing, error messages and other case-specific entries.
Instrument and controls
- Calibration records and certificates.
- Control-solution records and certificates.
- Instrument documentation.
- Maintenance or repair material when relevant to the issue.
State v. Chun established foundational requirements for admitting Alcotest results. Which records are discoverable or material in a particular case depends on the instrument, date, issue and governing decisions; not every record maintained by an agency is automatically necessary in every case.
What review can and cannot establish
Counsel can compare the individual sequence with operator and instrument records, look for timing or documentation issues, and place the result beside video, observations and reports. Obtaining a certificate or identifying a discrepancy does not by itself guarantee exclusion of the result.
Use this with the DWI discovery checklist, AIR guide, and DWI defense overview.