[{"sku":"MX2501","title":"HOBO pH and Temperature Data Logger","subtitle":"Bluetooth-enabled logger","variant_product_name":null,"unit_price":"879.00","brands":["HOBO"],"region":null,"service_plans":[],"parcel_length":"10.50","parcel_width":"2.50","parcel_height":"4.50","parcel_weight":"1.20","sellable":true,"published":true,"product_page_url":"\/products\/data-loggers\/mx2501","nid":"13326","product_description":"<p>Designed for long-term monitoring of pH in estuaries, lakes, streams, rivers, and oceans. This logger leverages Bluetooth technology to communicate wirelessly with our free <a href=\"\/products\/software\/hoboconnect\" target=\"_blank\" rel=\"noopener\">HOBOconnect<\/a><a href=\"https:\/\/www.onsetcomp.com\/products\/software\/hoboconnect\" target=\"_blank\"> <\/a>app running on your mobile device or Windows computer, making logger setup, calibration, and data offload quick and easy. Plus, a guided pH calibration process in the HOBOconnect app makes an otherwise complicated process easier to follow. This affordable, compact logger delivers high resolution data and dramatically cuts the time and effort needed to collect it.<\/p><p>Purchase an <a style=\"background-color:transparent;box-sizing:border-box;color:rgb(0, 52, 83);font-family:&quot;DM Sans&quot;, sans-serif;font-style:normal;font-weight:400;text-transform:none;\" href=\"https:\/\/www.onsetcomp.com\/products\/software\/mx-data-plans\" target=\"_blank\" title=\"MX Data Plans\" data-entity-type=\"node\" data-entity-uuid=\"966bd229-b4ee-4a18-bd57-2b0f44176651\" data-entity-substitution=\"canonical\"><u>MX Data Plan<\/u><\/a> to get more out of your data and access it from anywhere using the <a style=\"background-color:transparent;box-sizing:border-box;color:rgb(0, 52, 83);font-family:&quot;DM Sans&quot;, sans-serif;font-style:normal;font-weight:400;text-transform:none;\" href=\"https:\/\/www.onsetcomp.com\/products\/software\/hobolink\" target=\"_blank\" title=\"HOBOlink\" data-entity-type=\"node\" data-entity-uuid=\"759f0e57-3b6f-485a-9bea-ebba189dcf2e\" data-entity-substitution=\"canonical\"><u>LI-COR Cloud software platform (formerly HOBOlink)<\/u><\/a>!&nbsp;<\/p><p>&nbsp;<\/p>","add_on_products":{"title":"Recommended for this product","items":["MX-Data"]},"applications":["Environmental Research & Protection","Climate","Environmental Compliance","Renewable Energy","Green Space","Ecology","Water Resource Management","Aquatic Ecology","Water Quality & Compliance","Hydrology & Groundwater Monitoring","Watershed Management","Wetland & Stormwater","Dam Management","Agricultural Monitoring","Agricultural Research","Irrigation & Water","Crop Production","Orchard & Vineyard"],"brand":"HOBO","communication":"Bluetooth","compatibility_callout":["HOBOconnect"],"compatible_items":{"Accessory":{"Replacement_Parts":{"items":["MX2500-ELECTRODE","MX2500-GUARD","MX2500-END-CAP","MX2500-STORE-CAP"]},"Maintenance":{"items":["MX2500-CAL-BKR","MX2500-CAL-4","MX2500-CAL-7","MX2500-CAL-10","MX2500-STORE-SOLN","MX2500-CAL-KIT","MX2500-MAINT-KIT"]},"Compliance_Certificates":{"items":["COMPLIANCE CERT"]},"Communications":{"items":["MXGTW1"]},"Accessories":{"items":["ME-BP","ME-BP"]}},"Communications":{"Web_based_Monitoring_Systems_via_remote_communication":{"items":["MX-Speed","MX-Data"]}}},"country":"US","customers_also_bought":["MX2201","MX2204","U24-002-C","U26-001"],"field_documents":[{"nid":10416},{"nid":10421},{"nid":8451}],"environment":["Water"],"important_information":"Requires the HOBOconnect app and a compatible mobile device or Windows computer. System requirements for the app can be found at the bottom of our HOBOconnect software page. NOTE: pH electrodes should always be stored in storage solution when not deployed.[custom-onset:insert-block:5636]","logger_sensor_type":"integrated_sensors","measurement":["pH ","Water Temperature "],"media_remote_videos":["https:\/\/www.youtube.com\/watch?v=Pgqopqv-4OE"],"not_a_sku":"0","parcel_status":"default","primary_measurement":"pH","product_battery":"1AA","product_family_series":"MX2501","features":"<ul>\n\t<li>Guided pH calibration following on-screen prompts in HOBOconnect app<\/li>\n\t<li>Rugged PVC housing for deployment in both freshwater and saltwater environments<\/li>\n\t<li>Quick and easy data offload via Bluetooth to mobile devices or Windows computers<\/li>\n\t<li>Water detection system for longer battery life and less maintenance<\/li>\n\t<li>Potentiometric pH electrode with plastic body, gel electrolyte, and double cloth junction<\/li>\n\t<li>User-replaceable battery, pH electrode, and anti-biofouling copper guard<\/li>\n\t<li>Accuracy of \u00b10.10 pH units within \u00b110\u00b0C of temperature at calibration<\/li>\n<\/ul>","product_price":"879.00","specifications":[{"type":"Simple text","revision_default":"1","field_description":"<table style=\"width:100%;\" border=\"0\" cellpadding=\"7\" cellspacing=\"0\"><tbody><tr style=\"background-color:lightgrey;\"><td colspan=\"3\"><strong>pH Sensor<\/strong><\/td><\/tr><tr><td style=\"vertical-align:top;\">&nbsp;<\/td><td style=\"vertical-align:top;\"><strong>pH<\/strong><\/td><td style=\"vertical-align:top;\"><strong>mV<\/strong><\/td><\/tr><tr><td style=\"vertical-align:top;\"><strong>Range<\/strong><\/td><td style=\"vertical-align:top;\">2.00 to 12.00 pH<\/td><td style=\"vertical-align:top;\">-512 to 512 mV<\/td><\/tr><tr><td style=\"vertical-align:top;\"><strong>Accuracy<\/strong><\/td><td style=\"vertical-align:top;\">\u00b10.10 pH units within \u00b110\u00b0C of temperature at calibration<\/td><td style=\"vertical-align:top;\">\u00b10.20 mV<\/td><\/tr><tr><td style=\"vertical-align:top;\"><strong>Resolution<\/strong><\/td><td style=\"vertical-align:top;\">0.01 pH<\/td><td style=\"vertical-align:top;\">0.02 mV<\/td><\/tr><tr><td style=\"vertical-align:top;\"><strong>Response Time<\/strong><\/td><td style=\"vertical-align:top;\" colspan=\"2\">1 minute typical to 90% at constant temperature in stirred water<\/td><\/tr><tr><td style=\"vertical-align:top;\"><strong>Sample Ionic Strength<\/strong><\/td><td style=\"vertical-align:top;\" colspan=\"2\">\u2265 100 \u00b5S\/cm<\/td><\/tr><tr style=\"background-color:lightgrey;\"><td colspan=\"3\"><strong>Temperature Sensor<\/strong><\/td><\/tr><tr><td style=\"vertical-align:top;\"><strong>Range<\/strong><\/td><td style=\"vertical-align:top;\" colspan=\"2\">-2\u00b0 to 50\u00b0C (28.4\u00b0 to 122\u00b0F)<\/td><\/tr><tr><td style=\"vertical-align:top;\"><strong>Accuracy<\/strong><\/td><td style=\"vertical-align:top;\" colspan=\"2\">\u00b10.2\u00b0C (\u00b10.36\u00b0F)<\/td><\/tr><tr><td style=\"vertical-align:top;\"><strong>Resolution<\/strong><\/td><td style=\"vertical-align:top;\" colspan=\"2\">0.024\u00b0C at 25\u00b0C (0.04\u00b0F at 77\u00b0F)<\/td><\/tr><tr><td style=\"vertical-align:top;\"><strong>Response Time<\/strong><\/td><td style=\"vertical-align:top;\" colspan=\"2\">7 minutes typical to 90% in stirred water<\/td><\/tr><tr style=\"background-color:lightgrey;\"><td colspan=\"3\"><strong>Logger<\/strong><\/td><\/tr><tr><td style=\"vertical-align:top;\"><strong>Operating Range<\/strong><\/td><td style=\"vertical-align:top;\" colspan=\"2\">-2\u00b0 to 50\u00b0C (28.4\u00b0 to 122\u00b0F) \u2014 non-freezing<\/td><\/tr><tr><td style=\"vertical-align:top;\"><strong>Depth Rating<\/strong><\/td><td style=\"vertical-align:top;\" colspan=\"2\">IP68; waterproof to 40 m (131 ft)<\/td><\/tr><tr><td style=\"vertical-align:top;\"><strong>Water Detection<\/strong><\/td><td style=\"vertical-align:top;\" colspan=\"2\">Water conductivity level of 100 \u00b5S\/cm or greater is necessary for reliable detection of water. Deionized water or water below 100 \u00b5S\/cm may not be detected.<br>The water conductivity circuit may not reliably detect water that has frozen around the electrodes, i.e. below 0\u00b0C (32\u00b0F).<\/td><\/tr><tr><td style=\"vertical-align:top;\"><strong>Radio Power<\/strong><\/td><td style=\"vertical-align:top;\" colspan=\"2\">1 mW (0 dBm)<\/td><\/tr><tr><td style=\"vertical-align:top;\"><strong>Transmission Range<\/strong><\/td><td style=\"vertical-align:top;\" colspan=\"2\">Approximately 30.5 m (100 ft) line-of-sight in air<\/td><\/tr><tr><td style=\"vertical-align:top;\"><strong>Wireless Data Standard<\/strong><\/td><td style=\"vertical-align:top;\" colspan=\"2\">Bluetooth Low Energy (Bluetooth Smart)<\/td><\/tr><tr><td style=\"vertical-align:top;\"><strong>Logging Rate<\/strong><\/td><td style=\"vertical-align:top;\" colspan=\"2\">1 second to 18 hours<\/td><\/tr><tr><td style=\"vertical-align:top;\"><strong>Logging Modes<\/strong><\/td><td style=\"vertical-align:top;\" colspan=\"2\">Fixed interval (normal, statistics) or burst<\/td><\/tr><tr><td style=\"vertical-align:top;\"><strong>Memory Modes<\/strong><\/td><td style=\"vertical-align:top;\" colspan=\"2\">Wrap when full or stop when full<\/td><\/tr><tr><td style=\"vertical-align:top;\"><strong>Start Modes<\/strong><\/td><td style=\"vertical-align:top;\" colspan=\"2\">Immediate, push button, date &amp; time, or next interval<\/td><\/tr><tr><td style=\"vertical-align:top;\"><strong>Stop Modes<\/strong><\/td><td style=\"vertical-align:top;\" colspan=\"2\">When memory is full, push button, date &amp; time, or after a set logging period<\/td><\/tr><tr><td style=\"vertical-align:top;\"><strong>Time Accuracy<\/strong><\/td><td style=\"vertical-align:top;\" colspan=\"2\">\u00b11 minute per month 0\u00b0 to 50\u00b0C (32\u00b0 to 122\u00b0F)<\/td><\/tr><tr><td style=\"vertical-align:top;\"><strong>Battery Type<\/strong><\/td><td style=\"vertical-align:top;\" colspan=\"2\">One AA 1.5 Volt, user-replaceable<\/td><\/tr><tr><td style=\"vertical-align:top;\"><strong>Battery Life<\/strong><\/td><td style=\"vertical-align:top;\" colspan=\"2\">1 year typical at 25\u00b0C (77\u00b0F) with logging interval of 1 minute and Bluetooth Always On selected in software.<br>2 years typical at 25\u00b0C (77\u00b0F) with logging interval of 1 minute and Bluetooth Off Water Detect enabled in software.<br>3 years typical at 25\u00b0C (77\u00b0F) with logging interval of 1 minute and Bluetooth Always Off selected in software.<br>Faster logging intervals and statistics sampling intervals, burst logging, remaining connected with the app, excessive downloads, and paging may impact battery life.<\/td><\/tr><tr><td style=\"vertical-align:top;\"><strong>pH Electrode Typical Minimum Life<\/strong><\/td><td style=\"vertical-align:top;\" colspan=\"2\">6 months in sample with ionic strength \u2265 100 \u00b5S\/cm<\/td><\/tr><tr><td style=\"vertical-align:top;\"><strong>Memory<\/strong><\/td><td style=\"vertical-align:top;\" colspan=\"2\">152 KB (43,300 measurements, maximum)<\/td><\/tr><tr><td style=\"vertical-align:top;\"><strong>Full Memory Download Time<\/strong><\/td><td style=\"vertical-align:top;\" colspan=\"2\">Approximately 60 seconds; may take longer the farther the mobile device is from the logger<\/td><\/tr><tr><td style=\"vertical-align:top;\"><strong>Dimensions<\/strong><\/td><td style=\"vertical-align:top;\" colspan=\"2\">22.86 x 4.27 cm (9.0 x 1.68 inches); mounting hole 0.64 cm (0.25 inches)<\/td><\/tr><tr><td style=\"vertical-align:top;\"><strong>Weight<\/strong><\/td><td style=\"vertical-align:top;\" colspan=\"2\">268.2 g (9.46 oz)<\/td><\/tr><tr><td style=\"vertical-align:top;\"><strong>Buoyancy<\/strong><\/td><td style=\"vertical-align:top;\" colspan=\"2\">Fresh water: 13.6 g (0.48 oz) negative<br>Salt water: 19.6 g (0.69 oz) negative<\/td><\/tr><tr><td style=\"vertical-align:top;\"><strong>Wetted Materials<\/strong><\/td><td style=\"vertical-align:top;\" colspan=\"2\">Logger: PVC housing and sensor end cap, polycarbonate closure caps and mounting end cap with a TPE switch<br>pH electrode: plastic-bodied with Pellon\u00ae junctions and gel electrolyte, glass pH sensor bulb<\/td><\/tr><tr><td style=\"vertical-align:top;\">&nbsp;<\/td><td style=\"vertical-align:top;\" colspan=\"2\">&nbsp;<\/td><\/tr><tr><td><article class=\"media media--type-image media--view-mode-default media--orientation-unset\" data-embed-button=\"embed_image\" data-width=\"24\" data-height=\"19\">\n \n \n <div class=\"field field--name-field-media-image field--type-image field--label-visually_hidden\">\n <div class=\"field__label visually-hidden\">Image<\/div>\n <div class=\"field__item field__item__odd field__item__first field__item__last\"> <img loading=\"lazy\" src=\"\/sites\/default\/files\/embedded-product-images\/CE.jpg\" width=\"24\" height=\"19\" alt=\"Description: ce\" typeof=\"foaf:Image\" class=\"img-fluid\">\n\n<\/div>\n <\/div>\n\n <\/article>\n<\/td><td style=\"vertical-align:top;\" colspan=\"2\">The CE Marking identifies this product as complying with all relevant directives in the European Union (EU).<\/td><\/tr><tr><td> <\/td><td style=\"vertical-align:top;\" colspan=\"2\">&nbsp;<\/td><\/tr><\/tbody><\/table>"}],"product_status":"active","product_type":"Data Loggers","search_keys":"water temperature, ph","solution":["Stand-alone Bluetooth Data Loggers ","Stand-alone Data Loggers "],"warranty":"1","warranty_premium":"1","whats_in_the_box":["MX2501 pH and Temperature Data Logger","pH electrode","Bottle of storage solution that can also be used as a storage container for the electrode","Anti-biofouling copper guard","Tube of silicone grease","AA battery"],"digital_item":"0"},[{"nid":"10416","uuid":"2e586390-d0cf-444c-866e-36989c4d9ac8","vid":"45076","langcode":"und","revision_timestamp":"1676588422","status":"1","title":"Quick Start for the HOBO\u00ae MX pH and Temperature Logger 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data-list-item-id=\"e282b98aa28045aafdcfa11ce4fae1afd\">Configuring and starting your data logger<\/li><li data-list-item-id=\"e260ec1866dabe5281b564664b0960c72\">Viewing current conditions<\/li><li data-list-item-id=\"e801170d04655525bdbe2475bafb39908\">Downloading, exporting, and sharing your data<\/li><li data-list-item-id=\"e69b11aab7d1342b5db0af2d2e939822b\">Connecting your logger to LI-COR Cloud\u00ae<\/li><\/ul>","archive_resource":"0","associated_products":["MX1101"],"brand":"HOBO","documentation_hoboconnect":"0","documentation_intemp_app":"0","documentation_is_datasheet":"0","environment":["Indoor","Outdoor","Water"],"form_type":"webform","hoboconnect_docs_sorting":"0","hobomobile_docs_sorting":"0","intemp_cx_docs_sorting":"0","layout_style":"two_column","files":{"media_image":"https:\/\/dev-d9.onsetcomp.com\/sites\/default\/files\/2022-09\/Featured%5B1%29_HOBO-MX2300-Series.jpg"},"videos":{"media_video":"https:\/\/youtu.be\/EvU7_hFxVL0"},"FIELDS":[["field_media_video","entity_reference","remote_video"]],"meta_tags":"a:2:{s:11:\"description\";s:174:\"Learn the basic steps of data logging, setting up your new data logger, downloading and sharing data, and the option to upload your data to the cloud using HOBOlink software.\";s:5:\"title\";s:76:\"Getting Started Guide for HOBO\u00ae MX Data Loggers | [current-brand:site-name]\";}","resource_topic":["Getting 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