{"id":2381,"date":"2026-08-21T15:23:47","date_gmt":"2026-08-21T15:23:47","guid":{"rendered":"https:\/\/www.buffaloextracts.com\/knowledge\/?p=2381"},"modified":"2026-08-21T15:25:15","modified_gmt":"2026-08-21T15:25:15","slug":"atex-certification-extraction-equipment","status":"publish","type":"post","link":"https:\/\/www.buffaloextracts.com\/knowledge\/atex-certification-extraction-equipment\/","title":{"rendered":"ATEX Certification for Extraction Equipment: Why It Matters"},"content":{"rendered":"<div class=\"vce-row-container\" data-vce-boxed-width=\"true\"><div class=\"vce-row vce-row--col-gap-30 vce-row-equal-height vce-row-content--top\" id=\"el-0e4c93dd\" data-vce-do-apply=\"all el-0e4c93dd\"><div class=\"vce-row-content\" data-vce-element-content=\"true\"><div class=\"vce-col vce-col--md-auto vce-col--xs-1 vce-col--xs-last vce-col--xs-first vce-col--sm-last vce-col--sm-first vce-col--md-last vce-col--lg-last vce-col--xl-last vce-col--md-first vce-col--lg-first vce-col--xl-first\" id=\"el-8370f49d\"><div class=\"vce-col-inner\" data-vce-do-apply=\"border margin background  el-8370f49d\"><div class=\"vce-col-content\" data-vce-element-content=\"true\" data-vce-do-apply=\"padding el-8370f49d\"><div class=\"vce-text-block\"><div class=\"vce-text-block-wrapper vce\" id=\"el-9401c1ee\" data-vce-do-apply=\"all el-9401c1ee\"><h2 style=\"margin: 12.0pt 0cm 6.0pt 0cm;\"><span style=\"font-size: 16pt; font-family: inherit; color: #1a5276;\">ATEX Certification Is Not Optional for Extraction Facilities Where Flammable Solvents Are Present<\/span><\/h2><p style=\"margin: 0cm 0cm 6.0pt 0cm;\"><span style=\"font-size: 12pt; font-family: inherit; color: black;\">ATEX extraction equipment certification addresses a specific and serious hazard: the risk of ignition in an atmosphere where flammable gas or vapour has mixed with air to a concentration within the explosive range. Ethanol, hexane, and other solvent vapours in extraction facilities can form explosive atmospheres when they escape from process equipment. ATEX certified extraction machine requirements ensure that every piece of electrical and mechanical equipment operating in those potentially explosive zones has been designed and verified not to ignite the surrounding atmosphere under normal operating conditions or defined fault conditions. In the EU, ATEX certification is a legal requirement under two directives - not an optional quality standard.<br><br><\/span><\/p><p>Explore Our <a href=\"https:\/\/www.buffaloextracts.com\/extraction-solutions.html\">High-Performance Extraction Systems<\/a><\/p><h2 style=\"margin-top: 10.0pt;\"><span style=\"font-size: 16pt; font-family: inherit; color: #1f618d;\">The Two ATEX Directives: Equipment and Employer Obligations<\/span><\/h2><p style=\"margin: 0cm 0cm 6.0pt 0cm;\"><span style=\"font-size: 12pt; font-family: inherit; color: black;\">ATEX is two separate EU directives with different scopes. ATEX 114 (Directive 2014\/34\/EU) covers equipment intended for use in potentially explosive atmospheres - obligations on equipment manufacturers. ATEX 137 (Directive 1999\/92\/EC) covers minimum requirements for protecting workers potentially at risk from explosive atmospheres - obligations on employers. For extraction facility operators, both apply: the equipment manufacturer must comply with 2014\/34\/EU; the facility operator must comply with 1999\/92\/EC through zone classification and an Explosion Protection Document.<\/span><\/p><p style=\"margin: 0cm 0cm 6.0pt 0cm;\"><span style=\"font-size: 12pt; font-family: inherit; color: black;\">ATEX extraction equipment certification under Directive 2014\/34\/EU applies to equipment in Group II (surface industry), subdivided into categories: Category 1 for Zone 0 (explosive atmosphere continuously or long periods present), Category 2 for Zone 1 (periodically under normal operation), and Category 3 for Zone 2 (only in abnormal conditions). Category 2G equipment is the most common requirement for ethanol extraction systems operating in Zone 1 environments.<\/span><\/p><p><a href=\"https:\/\/www.buffaloextracts.com\/co2-extraction.html\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-1664 size-full\" src=\"https:\/\/www.buffaloextracts.com\/knowledge\/wp-content\/uploads\/2025\/10\/Studio-Gradient_Buffalo-Extraction-Systems_Website-CTA-Module_Extraction-Solutions.png\" alt=\"Co2 extraction\" width=\"1920\" height=\"800\" srcset=\"https:\/\/www.buffaloextracts.com\/knowledge\/wp-content\/uploads\/2025\/10\/Studio-Gradient_Buffalo-Extraction-Systems_Website-CTA-Module_Extraction-Solutions.png 1920w, https:\/\/www.buffaloextracts.com\/knowledge\/wp-content\/uploads\/2025\/10\/Studio-Gradient_Buffalo-Extraction-Systems_Website-CTA-Module_Extraction-Solutions-300x125.png 300w, https:\/\/www.buffaloextracts.com\/knowledge\/wp-content\/uploads\/2025\/10\/Studio-Gradient_Buffalo-Extraction-Systems_Website-CTA-Module_Extraction-Solutions-1024x427.png 1024w, https:\/\/www.buffaloextracts.com\/knowledge\/wp-content\/uploads\/2025\/10\/Studio-Gradient_Buffalo-Extraction-Systems_Website-CTA-Module_Extraction-Solutions-768x320.png 768w, https:\/\/www.buffaloextracts.com\/knowledge\/wp-content\/uploads\/2025\/10\/Studio-Gradient_Buffalo-Extraction-Systems_Website-CTA-Module_Extraction-Solutions-1536x640.png 1536w, https:\/\/www.buffaloextracts.com\/knowledge\/wp-content\/uploads\/2025\/10\/Studio-Gradient_Buffalo-Extraction-Systems_Website-CTA-Module_Extraction-Solutions-320x133.png 320w, https:\/\/www.buffaloextracts.com\/knowledge\/wp-content\/uploads\/2025\/10\/Studio-Gradient_Buffalo-Extraction-Systems_Website-CTA-Module_Extraction-Solutions-480x200.png 480w, https:\/\/www.buffaloextracts.com\/knowledge\/wp-content\/uploads\/2025\/10\/Studio-Gradient_Buffalo-Extraction-Systems_Website-CTA-Module_Extraction-Solutions-800x333.png 800w\" sizes=\"auto, (max-width: 1920px) 100vw, 1920px\" \/><\/a><\/p><h3 style=\"margin-top: 10.0pt;\"><span style=\"font-size: 14pt; font-family: inherit; color: #1f618d;\">Zone Classification in Extraction Facilities<\/span><\/h3><p style=\"margin: 0cm 0cm 6.0pt 0cm;\"><span style=\"font-size: 12pt; font-family: inherit; color: black;\">Employers are responsible for classifying zones in the extraction facility based on the likelihood and duration of explosive atmosphere formation. Around ethanol extraction equipment, zones are determined by the vapour release characteristics of ethanol (boiling point 78.4\u00b0C, flash point 13\u00b0C, explosive range 3.3\u201319% in air). Immediate vicinity of potential ethanol release points is typically classified Zone 1; the general area around extraction equipment may be Zone 2; areas remote from release sources where accumulation is not expected are unclassified.<\/span><\/p><p style=\"margin: 0cm 0cm 6.0pt 0cm;\"><span style=\"font-size: 12pt; font-family: inherit;\"><span style=\"color: black;\">The employer's zone classification programme is a prerequisite to equipment selection, not a post-purchase activity. The <\/span><a href=\"https:\/\/www.buffaloextracts.com\/knowledge\/supplement-purity-safety-potency-validation\/\"><span style=\"color: #1155cc;\">safety validation<\/span><\/a><span style=\"color: black;\"> framework for pharmaceutical and nutraceutical extraction - covering purity, potency, and contamination control - shares its systematic, interval-based documentation discipline with the ATEX compliance programme: both require documented hazard assessment, periodic review, and revalidation when process or facility conditions change.<\/span><\/span><\/p><h3 style=\"margin-top: 10.0pt;\"><span style=\"font-size: 14pt; font-family: inherit; color: #1f618d;\">ATEX Equipment Categories and Markings<\/span><\/h3><p style=\"margin: 0cm 0cm 6.0pt 0cm;\"><span style=\"font-size: 12pt; font-family: inherit; color: black;\">ATEX compliant extraction system equipment carries a standardised Ex marking identifying its certification parameters. A typical ATEX marking for ethanol extraction equipment reads: II 2G Ex eb IIB T3 Gb. Reading this: II = Group II (surface industry); 2G = Category 2, gas\/vapour atmosphere (Zone 1 use); Ex = explosion protected; eb = protection concept (enhanced safety); IIB = gas group (covers ethanol; IIA covers propane; IIC covers hydrogen and acetylene); T3 = temperature class (maximum surface temperature 200\u00b0C, below ethanol's autoignition temperature of approximately 363\u00b0C); Gb = Equipment Protection Level for Category 2G.<\/span><\/p><p style=\"margin: 0cm 0cm 6.0pt 0cm;\"><span style=\"font-size: 12pt; font-family: inherit; color: black;\">For CO2 extraction systems operating without flammable co-solvents, CO2 itself is not flammable and does not create an explosive atmosphere - ATEX requirements based on flammability do not apply to pure CO2 systems. Where ethanol is used as a co-solvent or for cleaning, the ethanol vapour creates ATEX-relevant zones even in a predominantly CO2 process. Operators must assess every solvent present in the facility, not only the primary process solvent.<\/span><\/p><h3 style=\"margin-top: 10.0pt;\"><span style=\"font-size: 14pt; font-family: inherit; color: #1f618d;\">ATEX Legal Requirement: The Employer's Four Obligations<\/span><\/h3><p style=\"margin: 0cm 0cm 6.0pt 0cm;\"><span style=\"font-size: 12pt; font-family: inherit;\"><span style=\"color: black;\">Directive 1999\/92\/EC places four principal obligations on the extraction facility employer: classify all locations where explosive atmospheres may form into zones; ensure ATEX-certified equipment of the appropriate category is installed in each zone; produce and maintain an Explosion Protection Document; and ensure workers in ATEX zones receive appropriate training. Extraction facilities operating under both ATEX and food or pharmaceutical manufacturing requirements carry overlapping compliance obligations - <\/span><a href=\"https:\/\/www.buffaloextracts.com\/knowledge\/gmp-compliance-botanical-extracts-co2-extraction\/\"><span style=\"color: #1155cc;\">GMP compliance<\/span><\/a><span style=\"color: black;\"> for botanical extracts via CO2 extraction and ATEX certification for the equipment are separate frameworks requiring coordinated quality and safety management systems.<\/span><\/span><\/p><p style=\"margin: 0cm 0cm 6.0pt 0cm;\"><span style=\"font-size: 12pt; font-family: inherit; color: black;\">The Explosion Protection Document (EPD) must record the hazard assessment, zone classification map, equipment selection rationale, inspection and maintenance procedures for ATEX-zone equipment, and coordination procedures where multiple contractors work in the same ATEX zones. The EPD must be reviewed and updated whenever process changes affect solvent handling, zone boundaries, or equipment.<\/span><\/p><h3 style=\"margin-top: 10.0pt;\"><span style=\"font-size: 14pt; font-family: inherit; color: #1f618d;\">Maintaining ATEX Certification: Ongoing Facility Obligations<\/span><\/h3><p style=\"margin: 0cm 0cm 6.0pt 0cm;\"><span style=\"font-size: 12pt; font-family: inherit;\"><span style=\"color: black;\">ATEX-rated equipment loses its certification status if modified without appropriate re-assessment. The <\/span><a href=\"https:\/\/www.buffaloextracts.com\/knowledge\/volatile-oil-extraction-methods-and-machine-maintenance-preventing-contamination-and-downtime-in-high-volume-facilities\/\"><span style=\"color: #1155cc;\">machine maintenance<\/span><\/a><span style=\"color: black;\"> programme for ATEX-zone extraction equipment must be designed to preserve explosion-protection features: using correct certified replacement components; maintaining cable entry and enclosure integrity; not introducing new ignition sources during maintenance activities; and confirming that any repaired or replaced component carries appropriate ATEX certification for the zone classification in which it operates.<\/span><\/span><\/p><p style=\"margin: 0cm 0cm 6.0pt 0cm;\"><span style=\"font-size: 12pt; font-family: inherit; color: black;\">ATEX extraction equipment requirements also extend to portable tools and equipment used within classified zones during maintenance - a non-ATEX-rated power tool used in Zone 1 during maintenance creates the same ignition risk as non-ATEX fixed equipment. The employer's Explosion Protection Document should include maintenance procedures that address portable tool selection and work permit requirements for ATEX-zone entry.<\/span><\/p><h3 style=\"margin-top: 10.0pt;\"><span style=\"font-size: 14pt; font-family: inherit; color: #1f618d;\">Where Buffalo Extraction Systems Fits In<\/span><\/h3><p style=\"margin: 0cm 0cm 6.0pt 0cm;\"><span style=\"font-size: 12pt; font-family: inherit; color: black;\">Buffalo Extraction Systems extraction equipment is CE, ASME, and PED certified; cryo-ethanol systems also ATEX certified; supplied with GMP documentation (USFDA, Health Canada, EU-GMP as required). This spans CO2 SCFE at 5L\u00d72, 25L\u00d72, and 100L\u00d72 configurations and cryo-ethanol systems at 5 kg, 20 kg, and 50 kg per batch. Each system runs SCADA that records instrument readings continuously throughout every batch, producing a time-stamped process record tied to the calibration state of the temperature sensors, pressure transducers, and flow meters feeding it. For a GMP calibration extraction facility, that relationship is foundational: the SCADA batch record is only as reliable as the instruments behind it, which is why calibration programme integrity is a prerequisite for meaningful process documentation rather than a parallel administrative requirement.<\/span><\/p><h3 style=\"margin-top: 10.0pt;\"><span style=\"font-size: 14pt; font-family: inherit; color: #1f618d;\">Conclusion<\/span><\/h3><p style=\"margin: 0cm 0cm 6.0pt 0cm;\"><span style=\"font-size: 12pt; font-family: inherit; color: black;\">ATEX extraction equipment certification is the legal baseline for operating extraction equipment in the presence of flammable solvents in the EU. Equipment certification under Directive 2014\/34\/EU and zone management under Directive 1999\/92\/EC are complementary but separate obligations - the equipment manufacturer addresses the former; the facility employer addresses the latter. Selecting ATEX-certified extraction machines is necessary but not sufficient: zone classification, the Explosion Protection Document, maintenance procedures, and personnel training complete the compliance picture. ATEX extraction equipment requirements apply from day one of operation.<\/span><\/p><h2><span style=\"font-size: 16pt; font-family: inherit; color: #1f618d;\">Frequently Asked Questions<\/span><\/h2><p style=\"margin-top: 10.0pt;\"><span style=\"font-size: 12pt; font-family: inherit; color: #1f618d;\">What is ATEX certification and why is it required for extraction equipment?<\/span><\/p><p style=\"margin: 0cm 0cm 6.0pt 0cm;\"><span style=\"font-size: 12pt; font-family: inherit; color: black;\">ATEX certification is the conformity assessment under EU Directive 2014\/34\/EU confirming that equipment intended for use in potentially explosive atmospheres will not ignite those atmospheres under normal operation or specified fault conditions. It is required for extraction equipment used with flammable solvents (ethanol, hexane) because these solvents produce flammable vapours that can mix with air to form explosive atmospheres. In the EU it is a legal requirement, not an optional standard, for any electrical or mechanical equipment installed in a classified zone.<\/span><\/p><p style=\"margin-top: 10.0pt;\"><span style=\"font-size: 12pt; font-family: inherit; color: #1f618d;\">Does ATEX apply to CO2 extraction equipment with no flammable solvents?<\/span><\/p><p style=\"margin: 0cm 0cm 6.0pt 0cm;\"><span style=\"font-size: 12pt; font-family: inherit; color: black;\">For pure supercritical CO2 extraction systems with no flammable solvents, CO2 is not flammable and ATEX flammability-based requirements do not apply. However, operators must assess whether cleaning agents, co-solvents, or botanically derived vapours create temporary explosive atmospheres. Where ethanol is used for cleaning even in a primarily CO2 system, ATEX requirements apply during those cleaning operations and for equipment in areas where ethanol vapour may accumulate.<\/span><\/p><p style=\"margin-top: 10.0pt;\"><span style=\"font-size: 12pt; font-family: inherit; color: #1f618d;\">What ATEX category is required for Zone 1 in an ethanol extraction facility?<\/span><\/p><p style=\"margin: 0cm 0cm 6.0pt 0cm;\"><span style=\"font-size: 12pt; font-family: inherit; color: black;\">Zone 1 requires ATEX Category 2G equipment - certified for locations where explosive gas or vapour atmospheres are likely to occur periodically under normal operation. Category 2G equipment must remain safe in the event of frequently occurring equipment malfunctions. The Ex marking must include 2G (Category 2, gas), IIB gas group minimum (covers ethanol vapour), and T3 temperature class minimum (maximum surface temperature 200\u00b0C, below ethanol's autoignition temperature of approximately 363\u00b0C).<\/span><\/p><p style=\"margin-top: 10.0pt;\"><span style=\"font-size: 12pt; font-family: inherit; color: #1f618d;\">What is the Explosion Protection Document and who must produce it?<\/span><\/p><p style=\"margin: 0cm 0cm 6.0pt 0cm;\"><span style=\"font-size: 12pt; font-family: inherit; color: black;\">The Explosion Protection Document (EPD) is required by EU Directive 1999\/92\/EC and produced by the facility employer. It must contain: the hazard assessment identifying all potential sources of explosive atmosphere; zone classification map showing Zone 0, 1, and 2 areas; evidence that ATEX-certified equipment of the correct category has been selected for each zone; inspection and maintenance procedures for ATEX-zone equipment; and coordination procedures where multiple contractors operate in the same ATEX zones. The EPD must be kept current whenever process changes affect zone boundaries or equipment.<\/span><\/p><p style=\"margin-top: 10.0pt;\"><span style=\"font-size: 12pt; font-family: inherit; color: #1f618d;\">What is the difference between ATEX certification and ATEX compliance?<\/span><\/p><p style=\"margin: 0cm 0cm 6.0pt 0cm;\"><span style=\"font-size: 12pt; font-family: inherit; color: black;\">ATEX certification refers specifically to the conformity assessment under Directive 2014\/34\/EU performed by the equipment manufacturer - resulting in CE marking and a Declaration of Conformity for the equipment. ATEX compliance is broader: it covers the equipment manufacturer's certification obligation and the facility employer's zone classification, equipment selection, Explosion Protection Document, and training obligations under both ATEX directives. An extraction facility with ATEX-certified equipment that has not completed zone classification and produced an Explosion Protection Document has ATEX-certified equipment in a non-compliant facility.<\/span><\/p><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div>\n","protected":false},"excerpt":{"rendered":"<p>ATEX Certification Is Not Optional for Extraction Facilities Where Flammable Solvents Are PresentATEX extraction equipment certification addresses a specific and serious hazard: the risk of ignition in an atmosphere where flammable gas or vapour has mixed with air to a concentration within the explosive range. Ethanol, hexane, and other solvent vapours in extraction facilities can &hellip;<\/p>\n<p class=\"read-more\"> <a class=\"\" href=\"https:\/\/www.buffaloextracts.com\/knowledge\/atex-certification-extraction-equipment\/\"> <span class=\"screen-reader-text\">ATEX Certification for Extraction Equipment: Why It Matters<\/span> Read More &raquo;<\/a><\/p>\n","protected":false},"author":1,"featured_media":1085,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"default","ast-global-header-display":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-2381","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.1 - 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