{"product_id":"milwaukee-mi56p","title":"Milwaukee MI56P Replacement pH \u0026 Temperature Probe for pH55 and pH56","description":"\u003cp\u003e\u003cspan\u003eThe \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eMilwaukee MI56P\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e is a genuine replacement pH and temperature electrode designed for the Milwaukee pH55 PRO and pH56 PRO waterproof testers.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eIf the original electrode on your Milwaukee tester has become slow to respond, produces unstable readings or has reached the end of its working life, replacing the probe can restore the instrument's measurement performance without needing to purchase a completely new tester.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe MI56P combines pH and temperature-sensing functions in one replaceable electrode. When connected to a compatible Milwaukee tester, it supports automatic temperature compensation for reliable pH measurements.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eIt is a practical replacement for aquarium keepers, aquaculture professionals and water-quality users who rely on their Milwaukee pH55 or pH56 for regular testing.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eKey Features\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eGenuine Milwaukee replacement electrode\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – designed for the pH55 PRO and pH56 PRO testers.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003epH and temperature measurement\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – combination electrode with integrated temperature-sensing capability.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eReplaceable design\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – extends the useful life of your existing Milwaukee tester.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eEasy installation\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – slides into the tester fitting and secures with a screw-on connection.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eDouble-junction pH electrode\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – designed for dependable pH measurement and reduced maintenance.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eAutomatic temperature compensation support\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – works with the compatible tester's temperature-compensation function.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eSuitable for aquarium testing\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – ideal for routine pH monitoring in freshwater and marine aquarium applications.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eAquaculture applications\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – suitable for maintaining pH measurement capability in fish-farming and aquatic systems.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan\u003eWhy Replace Your pH Electrode?\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003epH electrodes naturally deteriorate with use and age. Over time, you may notice:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eSlower response when measuring pH.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eUnstable or fluctuating readings.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eDifficulty calibrating the tester.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eReduced measurement reliability.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003ePhysical damage or deterioration of the sensing element.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan\u003eReplacing the electrode with a compatible MI56P can help restore the performance of your Milwaukee pH55 or pH56 tester.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eDesigned for Aquarium pH Monitoring\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eMaintaining stable pH is an important part of aquarium management. Different fish, invertebrates and aquatic plants have different pH requirements, making regular measurement useful for monitoring water conditions.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe MI56P allows existing Milwaukee pH55 and pH56 owners to continue monitoring:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eFreshwater aquarium pH.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eMarine aquarium water pH.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eReef aquarium water as part of a wider testing routine.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eAquaculture water conditions.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eWater used for aquarium water changes.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003epH changes during aquarium maintenance and water treatment.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan\u003eThe probe measures pH and temperature. It does not measure other aquarium parameters such as ammonia, nitrite, nitrate, alkalinity or salinity.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eCompatible Milwaukee Testers\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eThe Milwaukee MI56P is designed for:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eMilwaukee pH55 PRO\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – waterproof pH and temperature tester with 0.1 pH resolution.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eMilwaukee pH56 PRO\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – waterproof pH and temperature tester with 0.01 pH resolution.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan\u003eThe probe is not a standalone instrument. A compatible Milwaukee tester is required to display measurements.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eEasy Replacement\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eThe MI56P features a replaceable design that allows the electrode to be changed without replacing the complete tester.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eInstallation involves removing the existing electrode and fitting the replacement into the tester's connection. The probe slides into the fitting and is secured by screwing the retaining section into the meter body.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eFollow Milwaukee's instructions when replacing the electrode and take care not to damage the connector or sealing components.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eElectrode Care and Maintenance\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eCorrect maintenance helps maximise electrode life and maintain reliable readings.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eFor best results:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eRinse the probe with clean water after use.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eKeep the pH sensing element hydrated during storage.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eStore the electrode using Milwaukee MA9015 storage solution.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eNever store the pH electrode in distilled or deionised water.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eClean the electrode periodically using suitable pH electrode cleaning solution.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eRecalibrate the tester after replacing the electrode.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eUse fresh calibration solutions for accurate calibration.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan\u003eRecommended maintenance products:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eMilwaukee MA9015\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – pH electrode storage solution.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eMilwaukee MA9016\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – pH electrode cleaning solution.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eMilwaukee M10007B\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – pH 7.01 calibration solution.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eMilwaukee M10004B\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – pH 4.01 calibration solution.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan\u003eTechnical Specifications\u003c\/span\u003e\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cspan\u003eSpecification\u003c\/span\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cspan\u003eDetails\u003c\/span\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eModel\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eMilwaukee MI56P\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eProduct type\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eReplacement pH and temperature electrode\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eCompatible testers\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eMilwaukee pH55 PRO and pH56 PRO\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eMeasurement\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003epH and temperature sensing\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eElectrode type\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eGel-filled, double-junction pH electrode\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eTemperature compensation\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eSupports automatic temperature compensation on compatible testers\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eReplacement design\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eRemovable, screw-in electrode\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eInstallation\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eSlides into tester fitting and screws into meter body\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e\u003cspan\u003eImportant Compatibility Information\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eThe MI56P is specifically designed for the Milwaukee pH55 PRO and pH56 PRO.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eIt is not a universal replacement pH electrode and should not be purchased for other Milwaukee testers without checking compatibility first.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eKeep your Milwaukee aquarium pH tester performing reliably with the genuine MI56P replacement electrode.\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Replace a deteriorated probe rather than the entire instrument and continue monitoring aquarium and aquaculture water conditions.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Milwaukee","offers":[{"title":"Default Title","offer_id":47856324575546,"sku":"MS-MI56P","price":50.18,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0247\/9531\/6278\/files\/milwaukee-mi56p-replacement-electrode-for-ph55-and-ph56-2-in-1-ph-temperature-testers-ms-mi56p-3752928.jpg?v=1757078494","url":"https:\/\/groaqua.store\/en-gb\/products\/milwaukee-mi56p","provider":"GroAqua","version":"1.0","type":"link"}