{"id":58709,"date":"2026-07-13T13:14:14","date_gmt":"2026-07-13T17:14:14","guid":{"rendered":"https:\/\/www.aquariumcomputer.com\/usa\/en\/?post_type=product&#038;p=58709"},"modified":"2026-10-02T16:28:29","modified_gmt":"2026-10-02T20:28:29","slug":"sensor-calibration-fluids","status":"publish","type":"product","link":"https:\/\/www.aquariumcomputer.com\/usa\/product\/sensor-calibration-fluids\/","title":{"rendered":"Sensor Calibration Fluids"},"content":{"rendered":"<div class=\"wpb-content-wrapper\"><div class=\"vc_row wpb_row vc_row-fluid\"><div class=\"wpb_column vc_column_container vc_col-sm-12\"><div class=\"vc_column-inner\"><div class=\"wpb_wrapper\">\n\t<div class=\"wpb_text_column wpb_content_element \" >\n\t\t<div class=\"wpb_wrapper\">\n\t\t\t<h2>Accurate readings start with accurate calibration<\/h2>\n<p>Your sensors are only as reliable as their last calibration. Over time, every pH, conductivity, and redox electrode drifts. GHL Sensor Calibration Fluids give you a precisely defined reference so your ProfiLux keeps measuring what&#8217;s really in your aquarium \u2014 not what the electrode thinks it sees.<\/p>\n<p>Each fluid is a stabilized, laboratory-grade reference solution with a clearly defined value. Regular calibration keeps your dosing, KH, salinity, and water-quality control dependable.<\/p>\n<h3>Which fluid do I need?<\/h3>\n<table>\n<thead>\n<tr>\n<th>Fluid<\/th>\n<th>Calibrates<\/th>\n<th>Typical use<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>pH 4 \/ pH 7 \/ pH 9.2<\/td>\n<td>pH electrode<\/td>\n<td>Two-point pH calibration (7 + 4 or 7 + 9.2)<\/td>\n<\/tr>\n<tr>\n<td>Conductivity 1.41 mS\/cm<\/td>\n<td>Conductivity sensor<\/td>\n<td>Low-range \/ freshwater<\/td>\n<\/tr>\n<tr>\n<td>Conductivity 50 mS\/cm<\/td>\n<td>Conductivity \/ salinity sensor<\/td>\n<td>Seawater range<\/td>\n<\/tr>\n<tr>\n<td>Redox 220 mV<\/td>\n<td>Redox electrode<\/td>\n<td>Single-point redox reference<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>Why GHL calibration fluids<\/h3>\n<ul>\n<li>Stabilized formulation with a long, reliable shelf life<\/li>\n<li>Precisely defined reference values for repeatable results<\/li>\n<li>Matched to GHL sensors and the ProfiLux calibration routine<\/li>\n<li>Made in Germany<\/li>\n<\/ul>\n<p><em>Tip: Use fresh fluid for each calibration and don&#8217;t pour used fluid back into the bottle \u2014 this avoids contamination and keeps your<\/em><\/p>\n\n\t\t<\/div>\n\t<\/div>\n<\/div><\/div><\/div><\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Highly accurate, stabilized calibration fluids for precise calibration of your GHL sensors. Available as pH buffers (pH 4, pH 7, pH 9.2), conductivity standards (1.41 mS\/cm, 50 mS\/cm), and a redox standard (220 mV) \u2014 each filled to 50 mL.<\/p>\n","protected":false},"featured_media":58710,"template":"","meta":{"_acf_changed":false},"product_brand":[],"product_cat":[450,444],"product_tag":[],"class_list":{"0":"post-58709","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-calibration-fluids-reference-solutions","7":"product_cat-sensors-and-accessories","8":"description-off","10":"first","11":"outofstock","12":"taxable","13":"shipping-taxable","14":"purchasable","15":"product-type-variable"},"bundled_by":[],"bundle_stock_status":"outofstock","bundle_stock_quantity":null,"bundle_virtual":false,"bundle_layout":"","bundle_add_to_cart_form_location":"","bundle_editable_in_cart":false,"bundle_sold_individually_context":"","bundle_item_grouping":"","bundle_min_size":"","bundle_max_size":"","bundle_price":[],"bundled_items":[],"bundle_sell_ids":[],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Sensor Calibration Fluids \u2013 pH, Conductivity &amp; Redox | GHL<\/title>\n<meta name=\"description\" content=\"Highly accurate, stabilized pH, conductivity and redox calibration fluids for your GHL sensors. 50 mL bottles for reliable ProfiLux measurements. 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