{"id":4682,"date":"2026-10-22T11:53:27","date_gmt":"2026-10-22T11:53:27","guid":{"rendered":"https:\/\/gm2000.ro\/2023\/02\/06\/the-benefits-of-clorom-tablets-safe-efficient-easy-to-use\/"},"modified":"2026-10-22T12:06:20","modified_gmt":"2026-10-22T12:06:20","slug":"chlorine-tablets-nadcc-guide","status":"publish","type":"post","link":"https:\/\/gm2000.ro\/en\/chlorine-tablets-nadcc-guide\/","title":{"rendered":"Chlorine tablets (NaDCC): preparation, contact times and mistakes to avoid"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"4682\" class=\"elementor elementor-4682 elementor-4657\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t<section class=\"ob-is-breaking-bad elementor-section elementor-top-section elementor-element elementor-element-220f57a elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"220f57a\" data-element_type=\"section\" data-e-type=\"section\" data-settings=\"{&quot;_ob_bbad_use_it&quot;:&quot;yes&quot;,&quot;_ob_bbad_sssic_use&quot;:&quot;no&quot;,&quot;_ob_glider_is_slider&quot;:&quot;no&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-a22de65\" data-id=\"a22de65\" data-element_type=\"column\" data-e-type=\"column\" data-settings=\"{&quot;_ob_bbad_is_stalker&quot;:&quot;no&quot;,&quot;_ob_teleporter_use&quot;:false,&quot;_ob_column_hoveranimator&quot;:&quot;no&quot;,&quot;_ob_column_has_pseudo&quot;:&quot;no&quot;}\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-6e9d193 ob-harakiri-inherit ob-has-background-overlay elementor-widget elementor-widget-text-editor\" data-id=\"6e9d193\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_ob_use_harakiri&quot;:&quot;yes&quot;,&quot;_ob_harakiri_writing_mode&quot;:&quot;inherit&quot;,&quot;_ob_postman_use&quot;:&quot;no&quot;,&quot;_ob_perspektive_use&quot;:&quot;no&quot;,&quot;_ob_poopart_use&quot;:&quot;yes&quot;,&quot;_ob_shadough_use&quot;:&quot;no&quot;,&quot;_ob_allow_hoveranimator&quot;:&quot;no&quot;,&quot;_ob_widget_stalker_use&quot;:&quot;no&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div style=\"text-align:left\"><p style=\"margin:0 0 14px;line-height:1.7\">Chlorine-releasing disinfectants remain a reference in healthcare facilities thanks to their broad spectrum, including activity against bacterial spores. As effervescent tablets based on sodium dichloroisocyanurate (NaDCC), dosing is simple and reproducible. The result, however, depends on a few rules detailed below, using Clorom tablets as an example.<\/p><div style=\"background:#F5F8F7;border-left:4px solid #008B79;border-radius:8px;padding:16px 20px;margin:0 0 24px\"><p style=\"font-family:Poppins,sans-serif;font-weight:600;color:#161E2C;margin:0 0 8px\">In short<\/p><ul style=\"margin:0;padding-left:22px;line-height:1.7\"><li style=\"margin:0 0 6px\">One Clorom tablet in 3 L of water: bactericidal effect in 5 minutes, full spectrum (including tuberculocidal, virucidal and sporicidal) in 60 minutes, according to the authorisation.<\/li><li style=\"margin:0 0 6px\">Chlorine is inactivated by organic matter: clean before disinfecting.<\/li><li style=\"margin:0 0 6px\">Never mix chlorine-releasing products with acidic products (e.g. descalers): a toxic gas is released.<\/li><\/ul><\/div><h2 style=\"font-family:Poppins,sans-serif;color:#161E2C;font-size:24px;line-height:1.3;font-weight:600;margin:40px 0 14px\">How it works<\/h2><p style=\"margin:0 0 14px;line-height:1.7\">In water, sodium dichloroisocyanurate releases hypochlorous acid, a strong oxidant that destroys bacteria, fungi, viruses, mycobacteria and spores. This reactivity also explains its limits: chlorine also reacts with proteins, blood or soil, so part of the active substance is consumed before it reaches the microorganisms.<\/p><h2 style=\"font-family:Poppins,sans-serif;color:#161E2C;font-size:24px;line-height:1.3;font-weight:600;margin:40px 0 14px\">Preparation and use according to the authorisation<\/h2><div style=\"overflow-x:auto;margin:0 0 18px\"><table style=\"width:100%;border-collapse:collapse;font-size:15px;min-width:520px\"><thead><tr><th style=\"text-align:left;background:#161E2C;color:#fff;padding:10px 12px;font-family:Poppins,sans-serif;font-weight:500\">Application<\/th><th style=\"text-align:left;background:#161E2C;color:#fff;padding:10px 12px;font-family:Poppins,sans-serif;font-weight:500\">Working solution<\/th><th style=\"text-align:left;background:#161E2C;color:#fff;padding:10px 12px;font-family:Poppins,sans-serif;font-weight:500\">Method<\/th><th style=\"text-align:left;background:#161E2C;color:#fff;padding:10px 12px;font-family:Poppins,sans-serif;font-weight:500\">Contact time<\/th><\/tr><\/thead><tbody><tr style=\"background:#fff\"><td style=\"padding:10px 12px;border-bottom:1px solid #E3E8EE;vertical-align:top\">Surfaces and objects in healthcare facilities, including bedpans<\/td><td style=\"padding:10px 12px;border-bottom:1px solid #E3E8EE;vertical-align:top\">1 tablet \/ 3 L water<\/td><td style=\"padding:10px 12px;border-bottom:1px solid #E3E8EE;vertical-align:top\">Wiping or washing, with mechanical action<\/td><td style=\"padding:10px 12px;border-bottom:1px solid #E3E8EE;vertical-align:top\">5 minutes \u2013 bactericidal; 60 minutes \u2013 bactericidal, yeasticidal, fungicidal, tuberculocidal, mycobactericidal, virucidal<\/td><\/tr><tr style=\"background:#F5F8F7\"><td style=\"padding:10px 12px;border-bottom:1px solid #E3E8EE;vertical-align:top\">Surfaces other than those in contact with patients or staff<\/td><td style=\"padding:10px 12px;border-bottom:1px solid #E3E8EE;vertical-align:top\">1 tablet \/ 3 L water<\/td><td style=\"padding:10px 12px;border-bottom:1px solid #E3E8EE;vertical-align:top\">Wiping<\/td><td style=\"padding:10px 12px;border-bottom:1px solid #E3E8EE;vertical-align:top\">60 minutes \u2013 sporicidal, yeasticidal and fungicidal<\/td><\/tr><tr style=\"background:#fff\"><td style=\"padding:10px 12px;border-bottom:1px solid #E3E8EE;vertical-align:top\">Linen and textiles in healthcare facilities<\/td><td style=\"padding:10px 12px;border-bottom:1px solid #E3E8EE;vertical-align:top\">1 tablet \/ 3 L water<\/td><td style=\"padding:10px 12px;border-bottom:1px solid #E3E8EE;vertical-align:top\">Washing<\/td><td style=\"padding:10px 12px;border-bottom:1px solid #E3E8EE;vertical-align:top\">20 minutes \u2013 virucidal (dirty conditions); 60 minutes \u2013 sporicidal<\/td><\/tr><tr style=\"background:#F5F8F7\"><td style=\"padding:10px 12px;border-bottom:1px solid #E3E8EE;vertical-align:top\">Water not intended for consumption<\/td><td style=\"padding:10px 12px;border-bottom:1px solid #E3E8EE;vertical-align:top\">1 tablet \/ 5 L water<\/td><td style=\"padding:10px 12px;border-bottom:1px solid #E3E8EE;vertical-align:top\">Dissolution<\/td><td style=\"padding:10px 12px;border-bottom:1px solid #E3E8EE;vertical-align:top\">60 minutes \u2013 bactericidal, including Legionella pneumophila<\/td><\/tr><tr style=\"background:#fff\"><td style=\"padding:10px 12px;border-bottom:1px solid #E3E8EE;vertical-align:top\">Tableware, food transport equipment, food industry surfaces (PT4)<\/td><td style=\"padding:10px 12px;border-bottom:1px solid #E3E8EE;vertical-align:top\">1 tablet \/ 3 L water<\/td><td style=\"padding:10px 12px;border-bottom:1px solid #E3E8EE;vertical-align:top\">Wiping, immersion<\/td><td style=\"padding:10px 12px;border-bottom:1px solid #E3E8EE;vertical-align:top\">60 minutes \u2013 bactericidal; 5 minutes \u2013 yeasticidal<\/td><\/tr><\/tbody><\/table><\/div><p style=\"margin:0 0 14px;line-height:1.7\">Dissolve the tablet in the indicated amount of water, in a clean, labelled container. Use the solution within the stability period stated on the label and do not top it up with fresh solution.<\/p><h2 style=\"font-family:Poppins,sans-serif;color:#161E2C;font-size:24px;line-height:1.3;font-weight:600;margin:40px 0 14px\">What the tests in the authorisation show<\/h2><p style=\"margin:0 0 14px;line-height:1.7\">For virucidal activity, Clorom was tested to EN 14476 against three non-enveloped viruses, the most resistant ones: poliovirus type 1, adenovirus type 5 and murine norovirus (1 tablet \/ 3 L, 60 minutes). Sporicidal activity was demonstrated to EN 13704 and EN 17126, including against Clostridioides difficile ribotype 027, one of the common agents of healthcare-associated infections.<\/p><div style=\"background:#FFF8E1;border-left:4px solid #FFCF3F;border-radius:8px;padding:14px 18px;margin:16px 0\"><strong>Why contact time matters.<\/strong> At the same dilution, the bactericidal effect occurs in 5 minutes, but the full sporicidal and virucidal effect requires 60 minutes. For terminal disinfection after a C. difficile case, 60 minutes is the relevant time.<\/div><h2 style=\"font-family:Poppins,sans-serif;color:#161E2C;font-size:24px;line-height:1.3;font-weight:600;margin:40px 0 14px\">Safety and compatibility<\/h2><ul style=\"margin:0 0 16px;padding-left:22px;line-height:1.7\"><li style=\"margin:0 0 6px\">Do not mix with acidic products or other disinfectants: a toxic gas is released on contact with acids.<\/li><li style=\"margin:0 0 6px\">Wear the protective equipment indicated on the label when preparing the solution.<\/li><li style=\"margin:0 0 6px\">Chlorine can bleach textiles and corrode some metals: check material compatibility and rinse if the procedure requires it.<\/li><li style=\"margin:0 0 6px\">Store the tablets in their original, closed packaging, away from moisture.<\/li><\/ul><h2 style=\"font-family:Poppins,sans-serif;color:#161E2C;font-size:24px;line-height:1.3;font-weight:600;margin:40px 0 14px\">Frequently asked questions<\/h2><h3 style=\"font-family:Poppins,sans-serif;color:#161E2C;font-size:18px;line-height:1.35;font-weight:600;margin:24px 0 8px\">Can I use Clorom tablets for well water or swimming pools?<\/h3><p style=\"margin:0 0 14px;line-height:1.7\">No. The product\u2019s PT2 authorisation covers disinfection of water not intended for human or animal consumption; drinking water falls under a different product type (PT5), and swimming pools are not among the authorised uses.<\/p><h3 style=\"font-family:Poppins,sans-serif;color:#161E2C;font-size:18px;line-height:1.35;font-weight:600;margin:24px 0 8px\">Why does the solution smell of chlorine after disinfection?<\/h3><p style=\"margin:0 0 14px;line-height:1.7\">The smell comes from chlorine compounds; it does not indicate greater efficacy. Observe the dilution in the authorisation rather than increasing the dose.<\/p><h3 style=\"font-family:Poppins,sans-serif;color:#161E2C;font-size:18px;line-height:1.35;font-weight:600;margin:24px 0 8px\">Can I prepare the solution in the morning and use it all day?<\/h3><p style=\"margin:0 0 14px;line-height:1.7\">Use the solution within the stability period stated on the product label and replace it when it becomes soiled.<\/p><h2 style=\"font-family:Poppins,sans-serif;color:#161E2C;font-size:24px;line-height:1.3;font-weight:600;margin:40px 0 14px\">GM 2000 products for this application<\/h2><div style=\"display:flex;flex-wrap:wrap;gap:14px;margin:0 0 18px\"><div style=\"flex:1 1 220px;box-sizing:border-box;border:1px solid #E3E8EE;border-top:4px solid #008B79;border-radius:8px;padding:16px 18px\"><p style=\"font-family:Poppins,sans-serif;font-weight:600;color:#161E2C;margin:0 0 6px\"><a href=\"https:\/\/gm2000.ro\/en\/product\/clorom\/\" style=\"color:#161E2C;text-decoration:none\">Clorom<\/a><\/p><p style=\"margin:0 0 8px;font-size:14px;line-height:1.6\">NaDCC effervescent tablets, authorised PT2 (healthcare facilities, public spaces, non-potable water) and PT4 (food industry).<\/p><a href=\"https:\/\/gm2000.ro\/en\/product\/clorom\/\" style=\"color:#008B79;font-weight:600;font-size:14px\">View product sheet \u2192<\/a><\/div><\/div><h2 style=\"font-family:Poppins,sans-serif;color:#161E2C;font-size:24px;line-height:1.3;font-weight:600;margin:40px 0 14px\">References<\/h2><ul style=\"margin:0 0 16px;padding-left:22px;line-height:1.7\"><li style=\"margin:0 0 6px\">Clorom authorisations no. 4450BIO\/02\/12.30 (PT2) and 6511BIO\/04\/12.30 (PT4), available on the product sheet.<\/li><li style=\"margin:0 0 6px\">Romanian Ministry of Health Order no. 1761\/2021 approving the Technical Rules on cleaning, disinfection and sterilisation in public and private healthcare facilities, Annex 1.<\/li><li style=\"margin:0 0 6px\">EN 14476, EN 13704, EN 17126: test methods for virucidal and sporicidal activity.<\/li><\/ul><p style=\"margin:28px 0 8px;font-size:14px;color:#55616E\">Article reviewed by the GM 2000 technical team. Last updated: 22.10.2026. Product information is taken from the authorisations issued by the Romanian Ministry of Health; for other applications, refer to the label and the technical data sheet.<\/p><p style=\"margin:0 0 8px;font-size:14px;font-weight:600;color:#161E2C\">Use biocides safely. Always read the label and product information before use.<\/p><div style=\"background:#161E2C;color:#fff;border-radius:10px;padding:20px 24px;margin:24px 0 0\"><p style=\"font-family:Poppins,sans-serif;font-weight:600;font-size:18px;margin:0 0 6px;color:#fff\">Need a protocol tailored to your facility?<\/p><p style=\"margin:0 0 12px;color:#C9D3DD;line-height:1.6\">The GM 2000 team can recommend the right products and concentrations, with the corresponding authorisations and technical data sheets.<\/p><a href=\"https:\/\/gm2000.ro\/en\/request-a-quote\/\" style=\"display:inline-block;background:#FFCF3F;color:#161E2C;font-family:Poppins,sans-serif;font-weight:600;padding:10px 18px;border-radius:6px;text-decoration:none\">Request a quote<\/a><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Chlorine-releasing tablets based on sodium dichloroisocyanurate (NaDCC) have a broad spectrum, including sporicidal activity. Their efficacy, however, depends on prior cleaning, correct dilution and contact time.<\/p>\n","protected":false},"author":6,"featured_media":1534,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[32],"tags":[],"class_list":["post-4682","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-disinfection"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.3 - aioseo.com -->\n\t<meta name=\"description\" content=\"How to prepare and use sodium dichloroisocyanurate chlorine tablets in healthcare facilities and the food industry: concentrations, contact times, compatibility and safety.\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<meta name=\"author\" content=\"GM 2000\"\/>\n\t<link rel=\"canonical\" href=\"https:\/\/gm2000.ro\/en\/chlorine-tablets-nadcc-guide\/\" \/>\n\t\t<meta name=\"generator\" content=\"All in One SEO 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