Florida DUI Breath-Test Challenges: What the O-Ring Ruling Means for West Palm Beach Drivers

Police officer handing a breathalyzer to a driver during a traffic stop, illustrating legal challenges to DUI breath test results in Florida.

A $1 rubber ring may have exposed a flaw sitting inside breathalyzer machines used across Florida, including the ones deployed by law enforcement here in Palm Beach County. In August 2026, a three-judge panel in Duval County threw out a breath test after finding that the way the Florida Department of Law Enforcement and the Jacksonville Sheriff’s Office replaced O-rings inside the Intoxilyzer 8000 — during what they called routine maintenance — amounted to unauthorized repairs. At Meltzer & Bell, our 10-attorney team of former prosecutors and public defenders has tried countless DUI cases to verdict, and rulings like this one are exactly the kind of bargaining power we look for.

Facing a DUI in West Palm Beach after a failed breath test? Our firm holds over 1,000 five-star reviews online and includes a Board Certified Criminal Trial Attorney plus lawyers who once defended the State’s own use of the Intoxilyzer 8000. We know how these machines are supposed to work — and where they fail. Call (561) 557-8686 for a free, confidential consultation. We answer 24/7.

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What Was the Florida O-Ring Breath-Test Ruling?

Law book and gavel, illustrating the legal significance of Florida's O-ring breath test ruling in DUI cases.In August 2026, a three-judge panel in Duval County suppressed a DUI breath test after finding that replacing the Intoxilyzer 8000’s rubber O-rings without proper authorization or records amounted to an unauthorized repair under Florida’s approval rules. The driver, arrested on Beach Boulevard in 2025, had failed his breath test — yet the result was tossed.

Here’s what made this ruling different. Earlier Intoxilyzer challenges usually targeted one machine at a time. This argument targets a maintenance practice used on Intoxilyzer 8000 machines statewide, not a single device’s calibration log — which is why defense attorneys across Florida are watching it. But be clear about what the ruling is: a county-court suppression order in one defendant’s case. The order itself says it is meant to assist other Duval County judges but is not binding even on them. It may prompt challenges involving other instruments maintained under similar practices, but it does not automatically invalidate breath tests in Duval County, Palm Beach County, or anywhere else in Florida.

According to testimony described in the order, FDLE routinely replaces the four external O-rings during annual maintenance and replaces the fifth, internal O-ring at an inspector’s discretion. The legal issue was not that a ring went unchanged — it was whether replacing these components counts as a repair. The Jacksonville Sheriff’s Office conceded it replaced O-rings but kept no records of when, and acknowledged the swaps could affect accuracy. The state also acknowledged that neither agency is an authorized repair facility. The defense argued that changing an O-ring is a repair, and repairs must go to an approved third-party facility.

Suppression means a judge orders that a piece of evidence cannot be used against you at trial. When the breath result is suppressed, the prosecution loses one of its most persuasive numbers.

Why this matters for you: If the same maintenance practices were used on the machine that tested your breath, a similar argument may apply to your case — with one important timing caveat. The test in the Duval County case was taken in 2025 and the suppression hearing was held in May 2026, both under the breath-testing rules then in force. Effective July 1, 2026, Florida amended Chapter 11D-8 of the Administrative Code, including the definition of an “authorized repair facility” (broadening who may perform authorized repairs). Whether the O-ring argument reaches your case depends on when the work on your instrument was done and which version of the rules governed it. Florida averages nearly 45,000 DUI arrests per year, and Palm Beach County agencies use the same Intoxilyzer 8000 model at the center of this fight.

How Do You Suppress a DUI Breath Test in Florida?

A Florida DUI breath test can be suppressed when the State cannot prove the machine was properly maintained, calibrated, and operated under the rules set by the Florida Department of Law Enforcement’s Alcohol Testing Program. The breath result is only admissible if the State shows substantial compliance with the approved methods under Florida’s implied-consent framework (Fla. Stat. § 316.1932 and § 316.1934(3)) and Chapter 11D-8 of the Administrative Code — and the O-ring ruling shows that foundation can crack. The principal appellate authority is State v. Kilburn, 418 So. 3d 275 (Fla. 2d DCA 2025), where the Second District upheld the exclusion of Intoxilyzer 8000 results after an FDLE inspector — not an authorized repair facility — replaced a breath tube. The Duval County panel relied on Kilburn.

Florida’s DUI statute, Fla. Stat. § 316.193, makes it a crime to drive with a breath-alcohol level of .08 or higher, or while your normal faculties are impaired. That .08 number almost always comes from an Intoxilyzer 8000. Knock out the machine, and you often knock out the number.

Common grounds to challenge a breathalyzer result

  • Maintenance and repair records. The O-ring ruling turned on missing records and unauthorized fixes. Material gaps in the inspection or repair records may provide grounds for further investigation or a challenge.
  • Calibration failures. The device must pass agency inspections on schedule. A skipped or failed check undermines the result.
  • Mouth alcohol. Belching, acid reflux, dentures, or recent mouthwash can trap alcohol in the mouth and inflate a reading.
  • Rising BAC. Alcohol keeps absorbing after you stop drinking, so your level at the machine may be higher than it was behind the wheel.
  • Observation-period violations. Florida requires a 20-minute observation before the test. A material failure to complete or document the required observation period may support exclusion of the result.

Key insight: In our experience, the strongest breath-test challenges rarely rest on a single argument. We stack the machine’s maintenance record against the officer’s observation log against the physical evidence, then attack the weakest link first. Our firm includes attorneys who once defended the State’s use of the Intoxilyzer 8000 in a class challenge involving more than 150 cases, so we know precisely how the prosecution builds its foundation.

Not sure whether your machine had these problems? That’s exactly what a free case review is for. We’ll pull the records and tell you straight what your options look like.

Can I Still Lose My License Even If the Breath Test Is Thrown Out?

Gavel and car keys, illustrating that a driver's license may still be suspended even if a DUI breath test is excluded from evidence.Yes — Florida law generally gives a driver 10 days after the notice of suspension is issued to request a formal or informal review with the FLHSMV under Fla. Stat. § 322.2615, and that administrative case runs separately from your criminal DUI. In breath-test and refusal cases the DUI citation serves as that notice at the arrest. In blood-test cases the notice arrives later by mail. The suspension begins on the notice date, requesting review does not by itself stop it, and the temporary permit expires at midnight of the 10th day.

Miss that window and the administrative suspension stands without a hearing — six months for a first result of BAC .08 or higher (one year for a subsequent), or one year for a first refusal.

This is the part that catches most people off guard. Your license is at risk through the DMV process even before your criminal case gets going, and even a suppressed breath test in criminal court doesn’t automatically undo an administrative suspension you never contested.

Court deadlines move fast. The longer you wait, the fewer options remain. Call (561) 557-8686 today to protect your driving privilege before the 10-day clock runs out.

What Happens to Your DUI Case If the Breath Test Is Suppressed?

A suppressed breath test does not end a Florida DUI case — prosecutors can still proceed using field sobriety tests, body camera video, officer observations, and other physical evidence. Losing the number hurts the State, but it doesn’t erase the arrest.

That’s why the real defense work starts after the breath result is off the table. Without a .08 reading, the prosecution has to prove impairment the old-fashioned way, and every piece of that proof is challengeable.

Field sobriety tests

The horizontal gaze nystagmus test, the walk-and-turn, and the one-leg stand depend heavily on officer compliance and interpretation, and can be challenged on administration, conditions, video, and medical explanations. Medical conditions, uneven pavement, bad lighting on I-95, poor footwear, and nerves can all produce “clues” that have nothing to do with alcohol.

Body camera and dash video

Video cuts both ways. It can show slurred speech and stumbling, or it can show a calm, coherent driver who looks nothing like the officer’s report describes. As a former prosecutor in Broward County, Lawrence Meltzer knows how the State uses this footage, and where it falls apart.

The traffic stop itself

Evidence obtained as a result of an unlawful stop may be subject to suppression. Our attorneys examine whether the officer had a legal reason to pull you over in the first place — a challenge grounded in Fourth Amendment protections.

Evidence Type What the State Uses It For How We Challenge It
Intoxilyzer 8000 breath result Prove BAC .08+ under Fla. Stat. § 316.193 Maintenance/repair records, calibration, observation period
Field sobriety tests Show physical signs of impairment Medical conditions, environment, subjective scoring
Body/dash camera video Corroborate the officer’s observations Video contradicting the written report
Traffic stop Establish lawful basis for the arrest Fourth Amendment — no reasonable suspicion

What This Ruling Really Means for West Palm Beach Drivers

The O-ring ruling is a reminder that breath-test evidence is only as reliable as the agency’s paperwork — and Palm Beach County agencies use the same Intoxilyzer 8000 model whose maintenance and repair practices failed scrutiny in Duval County. This scope is what makes the decision worth watching.

Nearly 45,000 DUI arrests occur in Florida each year — and every one that relied on an Intoxilyzer 8000 result may share the maintenance questions raised in the Duval County case (Ticket Clinic figure, reported by Action News Jax, 2026).

Palm Beach County felony DUI cases and West Palm Beach misdemeanors are heard at the Judge Daniel T. K. Hurley Courthouse at 205 N. Dixie Highway. That’s where our attorneys file motions to suppress and demand the machine’s full maintenance history. If the records are incomplete or the repairs were unauthorized, we press the same theory that worked up in Jacksonville.

What most people miss: a breath test isn’t a fact — it’s a claim the State has to prove. The device, the maintenance, the operator’s training, and the observation period are all part of that proof. Break any one link, and the number loses its power.

Worried it’s too late or that your case isn’t “serious enough” to fight? We don’t gatekeep. A short call can tell you where you stand. Read some of our criminal defense case results to see how we approach machine-driven cases.

Your West Palm Beach DUI Defense Team

Photo of the Meltzer & Bell, P.A. team, illustrating trusted DUI defense representation for clients in West Palm Beach, Florida.Our firm brings over 143 years of combined criminal defense experience and more than 500 combined jury trials to breath-test cases. Several of our attorneys came straight from prosecutor and public defender offices, so we understand both how the State builds a DUI and how to take it apart.

Steven Bell — Shareholder and former Broward County public defender with over 20 years of criminal defense experience, who has tried countless DUI cases through verdict as lead trial counsel.

Lawrence Meltzer — Shareholder and former Assistant State Attorney and Special Unit Prosecutor in Broward County, bringing insider knowledge of prosecution strategy to felony DUI and DUI with serious bodily injury cases.

Ari Goldberg — Shareholder and former Palm Beach County prosecutor who represented the State in defending the Intoxilyzer 8000 against a class challenge covering more than 150 cases — rare, direct experience with the exact machine at issue here.

David Goudreau — Partner who spent six-and-a-half years at the West Palm Beach Public Defender’s Office, handling over 1,000 cases and 50+ jury trials, including multiple DUI trials ending in acquittal.

Whitney Duteau — Partner and Board Certified Criminal Trial Attorney (Florida Bar, 2025) with over a decade of exclusive criminal defense experience.

Our full 10-attorney team includes additional trial lawyers across our West Palm Beach, Fort Lauderdale, Stuart, Fort Pierce, and Lake Worth offices. This article covers breath-test suppression in adult DUI cases; it does not address juvenile matters, boating under the influence, or record sealing, which we handle separately.


The information on this page is for general informational purposes and does not constitute legal advice. Every case is unique, and past results do not guarantee future outcomes. Contact a qualified attorney to discuss your specific situation.


Ready to put this ruling to work for you? Call Meltzer & Bell at (561) 557-8686 for a free, confidential consultation. We answer 24/7, including weekends.

Frequently Asked Questions

What is the Intoxilyzer 8000 O-ring issue in Florida?

In August 2026, a three-judge panel in Duval County suppressed a DUI breath test after testimony showed that FDLE inspectors and the Jacksonville Sheriff’s Office had been replacing rubber O-rings inside the Intoxilyzer 8000 themselves — FDLE routinely swapping the four external rings and the internal ring at an inspector’s discretion — and that JSO kept no records of its replacements. Because the agencies weren’t authorized repair facilities, the court found the swaps were unauthorized repairs. The order is a county-court ruling in one case — not binding on other judges — but because the Intoxilyzer 8000 is used statewide, including in Palm Beach County, it may prompt similar challenges wherever instruments were maintained the same way.

Can a breathalyzer result be thrown out in Florida?

Yes. Under Florida law, a breath test is only admissible if the State proves the Intoxilyzer 8000 was maintained, calibrated, and operated according to the Florida Department of Law Enforcement’s rules. When maintenance records are missing, repairs were unauthorized, calibration failed, or the required 20-minute observation period wasn’t followed, an attorney can move to suppress the result for lack of substantial compliance with the approved methods under Fla. Stat. § 316.1932, § 316.1934(3), and Chapter 11D-8 of the Florida Administrative Code — the framework applied in State v. Kilburn, 418 So. 3d 275 (Fla. 2d DCA 2025). Suppression means the number can’t be used against you at trial.

Does a thrown-out breath test mean my DUI is dismissed?

Not automatically. Prosecutors can still pursue a DUI using field sobriety tests, body camera and dash video, officer observations, and other physical evidence. Losing the breath result weakens the State’s case significantly, but it forces them to prove impairment without a .08 number. That’s why the defense work continues after suppression, attacking each remaining piece of evidence.

How long do I have to save my Florida driver’s license after a DUI arrest?

Florida law generally gives you 10 days after the notice of suspension is issued to request a formal or informal review with the FLHSMV under Fla. Stat. § 322.2615. In breath-test and refusal cases the DUI citation serves as that notice at the arrest; in blood-test cases the notice arrives later by mail. The suspension starts on the notice date, requesting review doesn’t by itself stop it, and the temporary permit expires at midnight of the 10th day. Miss the deadline and the administrative suspension stands.

Is the administrative license suspension separate from my criminal DUI case?

Yes. The FLHSMV administrative suspension under Fla. Stat. § 322.2615 runs on its own track and starts before your criminal case gets going. Even if your breath test is later suppressed in criminal court, an administrative suspension you never contested within the 10-day window can still stand. You have to fight both cases, which is why calling an attorney quickly matters.

What are the penalties for a first DUI in Florida?

A first DUI conviction under Fla. Stat. § 316.193 carries a fine of $500 to $1,000 and up to six months in county jail. If your breath-alcohol level was .15 or higher, or a minor was in the vehicle, the exposure rises to up to nine months and a $1,000 to $2,000 fine. Additional consequences can include license suspension, probation, DUI school, and possible ignition interlock requirements.

When does a Florida DUI become a felony?

A DUI becomes a third-degree felony under Fla. Stat. § 316.193 when it’s a third conviction within 10 years of a prior, or a fourth conviction at any point. DUI causing serious bodily injury is also a third-degree felony, and DUI manslaughter is a second-degree felony carrying a four-year mandatory minimum. The 10-year window is critical, so never assume a prior charge automatically makes a new one a felony.

How much does a DUI cost in Florida?

A DUI can cost approximately $10,000 on average when you add up fines, court costs, increased insurance, license reinstatement fees, DUI school, and lost income (NHTSA). That figure includes attorney’s fees. Given the financial and personal stakes, challenging a questionable breath test can protect far more than just your record.

How much does a DUI defense attorney cost at Meltzer & Bell?

We offer a free, confidential consultation so you can understand your situation and your options before committing to anything. Fees depend on the complexity of your case, whether it’s a first offense or a felony, and whether it heads toward trial. Call (561) 557-8686 and we’ll give you a straight answer about cost and strategy.

Which court handles DUI cases in West Palm Beach?

Palm Beach County felony DUI cases and West Palm Beach-area misdemeanor DUIs are heard at the Judge Daniel T. K. Hurley Courthouse (Main Courthouse) at 205 N. Dixie Highway, West Palm Beach. This is where our attorneys file motions to suppress breath-test results and demand the Intoxilyzer 8000’s full maintenance history.

Can I challenge my DUI if I failed the breath test?

Yes. Failing a breath test doesn’t end the discussion. The O-ring ruling involved a driver who failed his test, and the result was still suppressed because of maintenance problems with the machine. We examine maintenance and repair records, calibration logs, the observation period, and the lawfulness of the stop to find every weakness in the State’s case.

Reviewed by Steven Kenneth BellLast Updated: August 2026

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