{"id":15721,"date":"2025-10-22T18:00:27","date_gmt":"2025-10-22T22:00:27","guid":{"rendered":"https:\/\/www.carolinaattorneys.com\/blog\/?p=15721"},"modified":"2025-10-15T22:15:07","modified_gmt":"2025-10-16T02:15:07","slug":"how-the-breathalyzer-works","status":"publish","type":"post","link":"https:\/\/www.carolinaattorneys.com\/blog\/how-the-breathalyzer-works\/","title":{"rendered":"Breath, Blood, and Bull: How the Breathalyzer Works"},"content":{"rendered":"<p>This post continues the <em data-start=\"574\" data-end=\"599\">Breath, Blood, and Bull<\/em> series, which explores how science, technology, and human judgment shape DWI <img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-15731 alignright lazyload\" src=\"\/jshared\/img\/icons\/spinner.svg\" data-src=\"https:\/\/www.carolinaattorneys.com\/blog\/wp-content\/uploads\/2025\/10\/How-the-Breathalyzer-Works-BREATH-TESTING-300x168.webp\" alt=\"Police officer speaking with a driver during a traffic stop, illustrating field sobriety and breath testing procedures in North Carolina DWI investigations\" width=\"300\" height=\"168\" data-srcset=\"https:\/\/www.carolinaattorneys.com\/blog\/wp-content\/uploads\/2025\/10\/How-the-Breathalyzer-Works-BREATH-TESTING-300x168.webp 300w, https:\/\/www.carolinaattorneys.com\/blog\/wp-content\/uploads\/2025\/10\/How-the-Breathalyzer-Works-BREATH-TESTING-1024x574.webp 1024w, https:\/\/www.carolinaattorneys.com\/blog\/wp-content\/uploads\/2025\/10\/How-the-Breathalyzer-Works-BREATH-TESTING-768x431.webp 768w, https:\/\/www.carolinaattorneys.com\/blog\/wp-content\/uploads\/2025\/10\/How-the-Breathalyzer-Works-BREATH-TESTING-1000x561.webp 1000w, https:\/\/www.carolinaattorneys.com\/blog\/wp-content\/uploads\/2025\/10\/How-the-Breathalyzer-Works-BREATH-TESTING-214x120.webp 214w, https:\/\/www.carolinaattorneys.com\/blog\/wp-content\/uploads\/2025\/10\/How-the-Breathalyzer-Works-BREATH-TESTING.webp 1312w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/> enforcement in North Carolina.<\/p>\n<p>The first article examined the limits of field sobriety testing. This installment turns to the machines that translate breath into evidence, using &#8220;breathalyzers.&#8221;<\/p>\n<p>By unpacking how they measure alcohol, where they can fail, and how lawyers challenge their results, you\u2019ll see why science is not necessarily as simple as a number on a printout.<\/p>\n<div class=\"read_more_link\"><a href=\"https:\/\/www.carolinaattorneys.com\/blog\/how-the-breathalyzer-works\/\"  title=\"Continue Reading Breath, Blood, and Bull: How the Breathalyzer Works\" class=\"more-link\">Continue reading<\/a><\/div>\n","protected":false},"excerpt":{"rendered":"<p>This post continues the Breath, Blood, and Bull series, which explores how science, technology, and human judgment shape DWI enforcement in North Carolina. The first article examined the limits of field sobriety testing. This installment turns to the machines that translate breath into evidence, using &#8220;breathalyzers.&#8221; By unpacking how they measure alcohol, where they can [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":15729,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[90],"tags":[2312,967,1427,2325,2315,2311,2322,2313,2324,2330,2310,2323,2327,2316,2319,2320,2314,2318,2328,2321,2317,2136,2326,2329],"class_list":["post-15721","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-dui","tag-bac-testing-explained","tag-bill-powers-lawyer","tag-blood-alcohol-concentration","tag-breath-blood-and-bull-series","tag-breath-test-errors","tag-breathalyzer-accuracy","tag-challenging-bac-results","tag-dui-breath-test-science","tag-dui-science-series","tag-dwi-defense-lawyer-bill-powers","tag-dwi-defense-north-carolina","tag-dwi-evidence-in-court","tag-dwi-lawyer-charlotte-nc","tag-field-sobriety-vs-breath-test","tag-fuel-cell-breathalyzer","tag-gerd-and-breath-test-error","tag-how-a-breathalyzer-works","tag-infrared-spectroscopy-breath-test","tag-iredell-dui-defense-lawyers","tag-mouth-alcohol-defense","tag-north-carolina-dui-laws","tag-powers-law-firm-dwi","tag-understanding-bac","tag-union-county-dui-lawyers"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Breath, Blood, and Bull: How the Breathalyzer Works &#8212; October 2025<\/title>\n<meta name=\"description\" content=\"How breathalyzers measure alcohol using infrared and fuel cell technology. Understand BAC science, accuracy, and defense issues in DWI cases\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.carolinaattorneys.com\/blog\/how-the-breathalyzer-works\/\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:title\" content=\"Breath, Blood, and Bull: How the Breathalyzer Works &#8212; October 2025\" \/>\n<meta name=\"twitter:description\" content=\"How breathalyzers measure alcohol using infrared and fuel cell technology. Understand BAC science, accuracy, and defense issues in DWI cases\" \/>\n<meta name=\"twitter:image\" content=\"https:\/\/www.carolinaattorneys.com\/blog\/wp-content\/uploads\/2025\/10\/BREATH-TESTING-IN-NORTH-CAROLINA.webp\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Carolina Attorneys\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"10 minutes\" \/>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Breath, Blood, and Bull: How the Breathalyzer Works &#8212; October 2025","description":"How breathalyzers measure alcohol using infrared and fuel cell technology. 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