{"id":44407,"date":"2026-10-07T11:41:10","date_gmt":"2026-10-07T11:41:10","guid":{"rendered":"https:\/\/www.poolparthub.com\/product\/hanna-instruments-alkalinity-chemical-test-kit-0-100-0-300-mg-l-110-tests-hi3811\/"},"modified":"2026-10-07T13:01:18","modified_gmt":"2026-10-07T13:01:18","slug":"hanna-instruments-alkalinity-chemical-test-kit-0-100-0-300-mg-l-110-tests-hi3811","status":"publish","type":"product","link":"https:\/\/www.poolparthub.com\/de\/product\/hanna-instruments-alkalinity-chemical-test-kit-0-100-0-300-mg-l-110-tests-hi3811\/","title":{"rendered":"Hanna Instruments Alkalit\u00e4t Chemisches Testkit (0\u2013100 \/ 0\u2013300 mg\/L, 110 Tests) (HI3811)"},"content":{"rendered":"<h2>Hanna Instruments Alkalinit\u00e4t Chemisches Testkit (0\u2013100 \/ 0\u2013300 mg\/L, 110 Tests)<\/h2>\n<p>Der HI3811 ist ein titrationsbasiertes chemisches Testset zur Messung sowohl der Phenolphthalein-Alkalit\u00e4t als auch der Gesamtalkalit\u00e4t in Wasserproben. Es deckt zwei Messbereiche ab \u2014 0 bis 100 mg\/L und 0 bis 300 mg\/L als CaCO3 \u2014 und eignet sich damit f\u00fcr Poolwasser, Trinkwasser, Abwasser sowie eine breite Palette von Umwelt- und Industrieanwendungen. Jedes Set enth\u00e4lt genug Reagenzien f\u00fcr etwa 110 Tests.<\/p>\n<h3>So funktioniert es<\/h3>\n<p>Das HI3811 verwendet eine S\u00e4uretitrationsmethode mit zwei Farbindikatoren: Phenolphthalein und Bromphenolblau. Die Phenolphthalein-Alkalinit\u00e4t wird durch Neutralisierung der Probe auf pH 8,3 bestimmt, wobei Hydroxid- und Carbonatanteile erfasst werden. Die Gesamtalkalinit\u00e4t setzt die Titration bis pH 4,5 fort, um alle Carbonat- und Bicarbonationen zu quantifizieren. Das Volumen des verbrauchten Titranten \u2014 pr\u00e4zise abgegeben \u00fcber die mitgelieferte kalibrierte Spritze \u2014 gibt direkt die Alkalinit\u00e4tskonzentration mit einer Aufl\u00f6sung von entweder 1 mg\/L oder 3 mg\/L an, je nach gew\u00e4hltem Messbereich.<\/p>\n<h3>Was ist im Lieferumfang enthalten?<\/h3>\n<p>Das Set wird komplett und einsatzbereit geliefert: 10 ml Phenolphthalein-Indikator, 10 ml Bromphenolblau-Indikator, 120 ml Alkalinit\u00e4ts-Titriermittel, ein 10-ml-Messgef\u00e4\u00df, ein 50-ml-Messgef\u00e4\u00df und eine kalibrierte Spritze mit Spitze. Alle Reagenzien sind vorgefertigt und mit Verfallsdatum und Chargennummer zur vollst\u00e4ndigen R\u00fcckverfolgbarkeit gekennzeichnet. Wenn die Reagenzien aufgebraucht sind, kann ein Ersatzreagenziensatz separat bestellt werden \u2013 es ist nicht n\u00f6tig, ein neues Set zu kaufen.<\/p>\n<h3>Warum die \u00dcberwachung der Alkalinit\u00e4t wichtig ist<\/h3>\n<p>Die Alkalinit\u00e4t ist ein wichtiger Indikator f\u00fcr die Pufferkapazit\u00e4t des Wassers und seine Widerstandsf\u00e4higkeit gegen\u00fcber pH-Schwankungen. In Poolwasser kann eine niedrige oder unausgewogene Alkalinit\u00e4t korrosive Bedingungen verursachen, die Oberfl\u00e4chen, Ger\u00e4te und Rohrleitungen sch\u00e4digen. Regelm\u00e4\u00dfige Tests mit dem HI3811 helfen Poolbesitzern und Wasseraufbereitungsfachleuten, eine stabile Wasserchemie aufrechtzuerhalten, die Infrastruktur zu sch\u00fctzen und die Wassersicherheit in Pools, Trinkwassersystemen und dar\u00fcber hinaus zu gew\u00e4hrleisten.<\/p>","protected":false},"excerpt":{"rendered":"<p>Hanna Instruments Alkalinity Chemical Test Kit (0\u2013100 \/ 0\u2013300 mg\/L, 110 Tests) The HI3811 is a titration-based chemical test kit designed to measure both Phenolphthalein Alkalinity and Total Alkalinity in water samples. It covers two ranges \u2014 0 to 100 mg\/L and 0 to 300 mg\/L as CaCO3 \u2014 making it suitable for pool water,<a href=\"https:\/\/www.poolparthub.com\/de\/product\/hanna-instruments-alkalinity-chemical-test-kit-0-100-0-300-mg-l-110-tests-hi3811\/\">Weiterlesen <span class=\"sr-only\">&#8220;Hanna Instruments Alkalinity Chemical Test Kit (0\u2013100 \/ 0\u2013300 mg\/L, 110 Tests) (HI3811)&#8221;<\/span><\/a><\/p>","protected":false},"featured_media":44412,"comment_status":"open","ping_status":"closed","template":"","meta":{"_acf_changed":false,"bwfblock_default_font":"","inline_featured_image":false},"product_brand":[2033],"product_cat":[2095],"product_tag":[],"class_list":["post-44407","product","type-product","status-publish","has-post-thumbnail","product_brand-hanna-instruments","product_cat-products-water-testing","first","onbackorder","taxable","shipping-taxable","purchasable","product-type-simple"],"acf":{"pph_product_template":"spare_part","pph_extra_parts_check":"","pph_spare_parts":null,"pph_extra_spare_parts":null,"extra_product_tabs":null,"main_product_link":null,"restock_info":"","exploded_view_link":null,"details_product":[{"text_details_type":"yes","text_details_product":"Measures both Phenolphthalein and Total Alkalinity"},{"text_details_type":"yes","text_details_product":"Two selectable ranges for flexible testing needs"},{"text_details_type":"yes","text_details_product":"Complete kit \u2014 all reagents and vessels included"},{"text_details_type":"yes","text_details_product":"High resolution: 1 mg\/L on the low range"},{"text_details_type":"yes","text_details_product":"Replacement reagents available \u2014 no need to rebuy the kit"},{"text_details_type":"no","text_details_product":"Manual titration requires careful technique for accuracy"},{"text_details_type":"no","text_details_product":"Reagents are freeze-sensitive \u2014 store and ship accordingly"}],"details_product_exploded":null,"pph_card_badge_use_custom":false,"pph_card_badge_text":"","pph_card_badge_background_color":"#ADC2F7","pph_card_badge_border_color":"#ADC2F7","pph_card_badge_text_color":"#2B46AB"},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.4 (Yoast SEO v28.6) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Alkalinity Chemical Test Kit (0\u2013100 \/ 0\u2013300 mg\/L, 110 Tests) \u2014 HI3811<\/title>\n<meta name=\"description\" content=\"Hanna Instruments Alkalinity Chemical Test Kit (0\u2013100 \/ 0\u2013300 mg\/L, 110 Tests) (HI3811). Original Pool Line product for pool and spa water analysis.\" \/>\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.poolparthub.com\/de\/produkt\/hanna-instruments-alkalinity-chemical-test-kit-0-100-0-300-mg-l-110-tests-hi3811\/\" \/>\n<meta property=\"og:locale\" content=\"de_DE\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Hanna Instruments Alkalinity Chemical Test Kit (0\u2013100 \/ 0\u2013300 mg\/L, 110 Tests) (HI3811)\" \/>\n<meta property=\"og:description\" content=\"Hanna Instruments Alkalinity Chemical Test Kit (0\u2013100 \/ 0\u2013300 mg\/L, 110 Tests) (HI3811). Original Pool Line product for pool and spa water analysis.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.poolparthub.com\/de\/produkt\/hanna-instruments-alkalinity-chemical-test-kit-0-100-0-300-mg-l-110-tests-hi3811\/\" \/>\n<meta property=\"og:site_name\" content=\"PoolPartHub\" \/>\n<meta property=\"article:modified_time\" content=\"2026-10-07T13:01:18+00:00\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Gesch\u00e4tzte Lesezeit\" \/>\n\t<meta name=\"twitter:data1\" content=\"1\u00a0Minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.poolparthub.com\\\/product\\\/hanna-instruments-alkalinity-chemical-test-kit-0-100-0-300-mg-l-110-tests-hi3811\\\/\",\"url\":\"https:\\\/\\\/www.poolparthub.com\\\/product\\\/hanna-instruments-alkalinity-chemical-test-kit-0-100-0-300-mg-l-110-tests-hi3811\\\/\",\"name\":\"Alkalinity Chemical Test Kit (0\u2013100 \\\/ 0\u2013300 mg\\\/L, 110 Tests) \u2014 HI3811\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.poolparthub.com\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/www.poolparthub.com\\\/product\\\/hanna-instruments-alkalinity-chemical-test-kit-0-100-0-300-mg-l-110-tests-hi3811\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/www.poolparthub.com\\\/product\\\/hanna-instruments-alkalinity-chemical-test-kit-0-100-0-300-mg-l-110-tests-hi3811\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.poolparthub.com\\\/wp-content\\\/uploads\\\/2026\\\/10\\\/HI3811.png\",\"datePublished\":\"2026-10-07T11:41:10+00:00\",\"dateModified\":\"2026-10-07T13:01:18+00:00\",\"description\":\"Hanna Instruments Alkalinity Chemical Test Kit (0\u2013100 \\\/ 0\u2013300 mg\\\/L, 110 Tests) (HI3811). Original Pool Line product for pool and spa water analysis.\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/www.poolparthub.com\\\/product\\\/hanna-instruments-alkalinity-chemical-test-kit-0-100-0-300-mg-l-110-tests-hi3811\\\/#breadcrumb\"},\"inLanguage\":\"de\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/www.poolparthub.com\\\/product\\\/hanna-instruments-alkalinity-chemical-test-kit-0-100-0-300-mg-l-110-tests-hi3811\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"de\",\"@id\":\"https:\\\/\\\/www.poolparthub.com\\\/product\\\/hanna-instruments-alkalinity-chemical-test-kit-0-100-0-300-mg-l-110-tests-hi3811\\\/#primaryimage\",\"url\":\"https:\\\/\\\/www.poolparthub.com\\\/wp-content\\\/uploads\\\/2026\\\/10\\\/HI3811.png\",\"contentUrl\":\"https:\\\/\\\/www.poolparthub.com\\\/wp-content\\\/uploads\\\/2026\\\/10\\\/HI3811.png\",\"width\":800,\"height\":800},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/www.poolparthub.com\\\/product\\\/hanna-instruments-alkalinity-chemical-test-kit-0-100-0-300-mg-l-110-tests-hi3811\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/www.poolparthub.com\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Shop\",\"item\":\"https:\\\/\\\/www.poolparthub.com\\\/shop\\\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Hanna Instruments Alkalinity Chemical Test Kit (0\u2013100 \\\/ 0\u2013300 mg\\\/L, 110 Tests) (HI3811)\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/www.poolparthub.com\\\/#website\",\"url\":\"https:\\\/\\\/www.poolparthub.com\\\/\",\"name\":\"PoolPartHub\",\"description\":\"Your Spare Part Companion\",\"publisher\":{\"@id\":\"https:\\\/\\\/www.poolparthub.com\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/www.poolparthub.com\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"de\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/www.poolparthub.com\\\/#organization\",\"name\":\"PoolPartHub\",\"url\":\"https:\\\/\\\/www.poolparthub.com\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"de\",\"@id\":\"https:\\\/\\\/www.poolparthub.com\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/www.poolparthub.com\\\/wp-content\\\/uploads\\\/2026\\\/02\\\/Logo-1.png\",\"contentUrl\":\"https:\\\/\\\/www.poolparthub.com\\\/wp-content\\\/uploads\\\/2026\\\/02\\\/Logo-1.png\",\"width\":303,\"height\":30,\"caption\":\"PoolPartHub\"},\"image\":{\"@id\":\"https:\\\/\\\/www.poolparthub.com\\\/#\\\/schema\\\/logo\\\/image\\\/\"}}]}<\/script>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"Alkalinity Chemical Test Kit (0\u2013100 \/ 0\u2013300 mg\/L, 110 Tests) \u2014 HI3811","description":"Hanna Instruments Alkalinity Chemical Test Kit (0\u2013100 \/ 0\u2013300 mg\/L, 110 Tests) (HI3811). Original Pool Line product for pool and spa water analysis.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.poolparthub.com\/de\/produkt\/hanna-instruments-alkalinity-chemical-test-kit-0-100-0-300-mg-l-110-tests-hi3811\/","og_locale":"de_DE","og_type":"article","og_title":"Hanna Instruments Alkalinity Chemical Test Kit (0\u2013100 \/ 0\u2013300 mg\/L, 110 Tests) (HI3811)","og_description":"Hanna Instruments Alkalinity Chemical Test Kit (0\u2013100 \/ 0\u2013300 mg\/L, 110 Tests) (HI3811). Original Pool Line product for pool and spa water analysis.","og_url":"https:\/\/www.poolparthub.com\/de\/produkt\/hanna-instruments-alkalinity-chemical-test-kit-0-100-0-300-mg-l-110-tests-hi3811\/","og_site_name":"PoolPartHub","article_modified_time":"2026-10-07T13:01:18+00:00","twitter_card":"summary_large_image","twitter_misc":{"Gesch\u00e4tzte Lesezeit":"1\u00a0Minute"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/www.poolparthub.com\/product\/hanna-instruments-alkalinity-chemical-test-kit-0-100-0-300-mg-l-110-tests-hi3811\/","url":"https:\/\/www.poolparthub.com\/product\/hanna-instruments-alkalinity-chemical-test-kit-0-100-0-300-mg-l-110-tests-hi3811\/","name":"Alkalinity Chemical Test Kit (0\u2013100 \/ 0\u2013300 mg\/L, 110 Tests) \u2014 HI3811","isPartOf":{"@id":"https:\/\/www.poolparthub.com\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.poolparthub.com\/product\/hanna-instruments-alkalinity-chemical-test-kit-0-100-0-300-mg-l-110-tests-hi3811\/#primaryimage"},"image":{"@id":"https:\/\/www.poolparthub.com\/product\/hanna-instruments-alkalinity-chemical-test-kit-0-100-0-300-mg-l-110-tests-hi3811\/#primaryimage"},"thumbnailUrl":"https:\/\/www.poolparthub.com\/wp-content\/uploads\/2026\/10\/HI3811.png","datePublished":"2026-10-07T11:41:10+00:00","dateModified":"2026-10-07T13:01:18+00:00","description":"Hanna Instruments Alkalinity Chemical Test Kit (0\u2013100 \/ 0\u2013300 mg\/L, 110 Tests) (HI3811). Original Pool Line product for pool and spa water analysis.","breadcrumb":{"@id":"https:\/\/www.poolparthub.com\/product\/hanna-instruments-alkalinity-chemical-test-kit-0-100-0-300-mg-l-110-tests-hi3811\/#breadcrumb"},"inLanguage":"de","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.poolparthub.com\/product\/hanna-instruments-alkalinity-chemical-test-kit-0-100-0-300-mg-l-110-tests-hi3811\/"]}]},{"@type":"ImageObject","inLanguage":"de","@id":"https:\/\/www.poolparthub.com\/product\/hanna-instruments-alkalinity-chemical-test-kit-0-100-0-300-mg-l-110-tests-hi3811\/#primaryimage","url":"https:\/\/www.poolparthub.com\/wp-content\/uploads\/2026\/10\/HI3811.png","contentUrl":"https:\/\/www.poolparthub.com\/wp-content\/uploads\/2026\/10\/HI3811.png","width":800,"height":800},{"@type":"BreadcrumbList","@id":"https:\/\/www.poolparthub.com\/product\/hanna-instruments-alkalinity-chemical-test-kit-0-100-0-300-mg-l-110-tests-hi3811\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/www.poolparthub.com\/"},{"@type":"ListItem","position":2,"name":"Shop","item":"https:\/\/www.poolparthub.com\/shop\/"},{"@type":"ListItem","position":3,"name":"Hanna Instruments Alkalinity Chemical Test Kit (0\u2013100 \/ 0\u2013300 mg\/L, 110 Tests) (HI3811)"}]},{"@type":"WebSite","@id":"https:\/\/www.poolparthub.com\/#website","url":"https:\/\/www.poolparthub.com\/","name":"PoolPartHub","description":"Dein Begleiter f\u00fcr Ersatzteile","publisher":{"@id":"https:\/\/www.poolparthub.com\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.poolparthub.com\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"de"},{"@type":"Organization","@id":"https:\/\/www.poolparthub.com\/#organization","name":"PoolPartHub","url":"https:\/\/www.poolparthub.com\/","logo":{"@type":"ImageObject","inLanguage":"de","@id":"https:\/\/www.poolparthub.com\/#\/schema\/logo\/image\/","url":"https:\/\/www.poolparthub.com\/wp-content\/uploads\/2026\/02\/Logo-1.png","contentUrl":"https:\/\/www.poolparthub.com\/wp-content\/uploads\/2026\/02\/Logo-1.png","width":303,"height":30,"caption":"PoolPartHub"},"image":{"@id":"https:\/\/www.poolparthub.com\/#\/schema\/logo\/image\/"}}]}},"_links":{"self":[{"href":"https:\/\/www.poolparthub.com\/de\/wp-json\/wp\/v2\/product\/44407","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.poolparthub.com\/de\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/www.poolparthub.com\/de\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/www.poolparthub.com\/de\/wp-json\/wp\/v2\/comments?post=44407"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.poolparthub.com\/de\/wp-json\/wp\/v2\/media\/44412"}],"wp:attachment":[{"href":"https:\/\/www.poolparthub.com\/de\/wp-json\/wp\/v2\/media?parent=44407"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.poolparthub.com\/de\/wp-json\/wp\/v2\/product_brand?post=44407"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.poolparthub.com\/de\/wp-json\/wp\/v2\/product_cat?post=44407"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.poolparthub.com\/de\/wp-json\/wp\/v2\/product_tag?post=44407"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}