{"product_id":"ph-orp-replacement-probe-300cm-bnc-cable-aquarium-hydroponics","title":"pH \u0026 ORP Probe 300cm BNC Cable – Aquarium \u0026 Hydroponics","description":"\u003ch2\u003epH \u0026amp; ORP Replacement Probe with 300cm BNC Cable – Aquarium, Hydroponics \u0026amp; Lab Testing\u003c\/h2\u003e\n\n\u003cp\u003eKeep your water quality measurements accurate and consistent with this versatile \u003cstrong\u003epH \u0026amp; ORP Replacement Probe\u003c\/strong\u003e. Featuring a generous \u003cstrong\u003e300 cm (3-meter) BNC cable\u003c\/strong\u003e and built-in \u003cstrong\u003eautomatic temperature compensation (ATC)\u003c\/strong\u003e, this probe delivers stable, fast readings across a wide range of applications — from home aquariums and fish tanks to hydroponics systems, swimming pools, spas, laboratories, and industrial water testing.\u003c\/p\u003e\n\n\u003cp\u003eThe universal \u003cstrong\u003eBNC connector\u003c\/strong\u003e makes this probe a true drop-in replacement compatible with virtually any pH meter or ORP controller that uses a standard BNC input. Whether you're upgrading an existing setup or replacing a worn-out electrode, this probe slots right in without any adapters.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Measuring Range:\u003c\/strong\u003e 0.00–14.00 pH — covers acidic, neutral, and alkaline solutions\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAutomatic Temperature Compensation (ATC):\u003c\/strong\u003e 0–50°C for consistent accuracy across varying water temperatures\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLong 300 cm Cable:\u003c\/strong\u003e Provides excellent reach for deep tanks, large reservoirs, and remote monitoring setups\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUniversal BNC Connector:\u003c\/strong\u003e Compatible with most pH meters, ORP meters, and water quality controllers with a BNC interface\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCombination Electrode:\u003c\/strong\u003e Integrates an indicator electrode and a silver chloride reference electrode in one body for reliable ORP measurement\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFast Response Time:\u003c\/strong\u003e ≤ 1 minute to a stable reading\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDurable ABS Construction:\u003c\/strong\u003e 12 mm diameter probe built to handle regular submersion\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003epH Measuring Range:\u003c\/strong\u003e 0.00–14.00 pH\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOperating Temperature:\u003c\/strong\u003e 0–60°C\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eATC Range:\u003c\/strong\u003e 0–50°C\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eZero Point:\u003c\/strong\u003e 7 ± 0.5 pH\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAlkalinity Error:\u003c\/strong\u003e ≤ 0.2 pH\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTheoretical Slope:\u003c\/strong\u003e ≥ 98.5%\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInternal Resistance:\u003c\/strong\u003e ≤ 250 MΩ\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eResponse Time:\u003c\/strong\u003e ≤ 1 minute\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProbe Diameter:\u003c\/strong\u003e 12 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCable Length:\u003c\/strong\u003e 300 cm (~3 metres)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConnector:\u003c\/strong\u003e BNC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e ABS\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIdeal Applications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eAquariums \u0026amp; fish tanks\u003c\/li\u003e\n  \u003cli\u003eHydroponics \u0026amp; irrigation systems\u003c\/li\u003e\n  \u003cli\u003eSwimming pools \u0026amp; spas\u003c\/li\u003e\n  \u003cli\u003eKombucha brewing \u0026amp; fermentation monitoring\u003c\/li\u003e\n  \u003cli\u003eLaboratory \u0026amp; scientific research\u003c\/li\u003e\n  \u003cli\u003eIndustrial \u0026amp; wastewater water quality testing\u003c\/li\u003e\n  \u003cli\u003eDrinking water analysis\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003ePackage Contents\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e2 × PH-201 Electrodes\u003c\/li\u003e\n  \u003cli\u003e1 × pH 4.01 Buffer Solution\u003c\/li\u003e\n  \u003cli\u003e1 × pH 6.86 Buffer Solution\u003c\/li\u003e\n  \u003cli\u003e2 × pH ORP Buffers\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eMade in China.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cem\u003eNote: Actual product colour may vary slightly from images due to monitor brightness and lighting conditions. Please allow for minor measurement deviations.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products You May Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003ca href=\"\/products\/100-pcs-plant-support-clips-orchid-flower-vine-stem-garden\"\u003e100 PCS Plant Support Clips for Orchid, Flower \u0026amp; Vine Stems\u003c\/a\u003e — great for keeping hydroponics setups neat and organised\u003c\/li\u003e\n  \u003cli\u003e\n\u003ca href=\"\/products\/air-compressor-pressure-gauge-0-10-0-12-0-25-bar-hydraulic-diy\"\u003eAir Compressor Pressure Gauge 0-10\/0-12\/0-25 Bar | DIY Tool\u003c\/a\u003e — another precision measurement instrument for your workshop or lab\u003c\/li\u003e\n  \u003cli\u003e\n\u003ca href=\"\/products\/electromagnetic-induction-tester-coil-motherboard-fault-detector\"\u003eElectromagnetic Induction Tester – Coil \u0026amp; Circuit Fault Detector\u003c\/a\u003e — a handy diagnostic tool for testing electrical components\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.osha.gov\/eye-face-protection\" target=\"_blank\" rel=\"noopener\"\u003eOSHA on eye and face protection\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\n\u003ch4\u003eQ: Is this pH ORP probe compatible with my existing pH meter or controller?\u003c\/h4\u003e\n\u003cp\u003eA: Yes — as long as your pH meter or water quality controller uses a standard BNC connector, this replacement probe will be fully compatible. The universal BNC interface is the most common connector type used across pH meters, ORP meters, and water quality analysers from virtually all major brands.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What is automatic temperature compensation (ATC) and why does it matter?\u003c\/h4\u003e\n\u003cp\u003eA: Automatic temperature compensation (ATC) automatically adjusts pH readings to account for changes in water temperature, which can affect measurement accuracy. This probe's ATC range of 0–50°C ensures you get consistent, reliable results whether you're testing a cold aquarium, a warm pool, or a heated hydroponics reservoir — without needing to manually correct for temperature.\u003c\/p\u003e\n\n\u003ch4\u003eQ: How do I care for and store the pH ORP probe to maximise its lifespan?\u003c\/h4\u003e\n\u003cp\u003eA: When not in use, keep the probe tip submerged in a small amount of storage solution or pH 4.01 buffer — never allow the glass bulb to dry out completely, as this can damage the electrode membrane. Rinse the probe gently with clean water between measurements and avoid scratching the glass tip. Proper storage will help maintain accuracy and extend the working life of the probe significantly.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Can this probe be used for both pH and ORP measurements?\u003c\/h4\u003e\n\u003cp\u003eA: This listing includes both pH electrodes and ORP replacement probes. The ORP probe contains a combination electrode (indicator electrode + silver chloride reference electrode) specifically designed for measuring the oxidation-reduction potential (ORP) of water — ideal for pools, aquaculture, and water treatment systems. Always match the correct probe type to the corresponding meter input for accurate readings.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Is this pH ORP probe compatible with my existing pH meter or controller?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes — as long as your pH meter or water quality controller uses a standard BNC connector, this replacement probe will be fully compatible. 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Always match the correct probe type to the corresponding meter input for accurate readings.\"}}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"BreadcrumbList\", \"itemListElement\": [{\"@type\": \"ListItem\", \"position\": 1, \"name\": \"Home\", \"item\": \"https:\/\/n8ande-60.myshopify.com\/\"}, {\"@type\": \"ListItem\", \"position\": 2, \"name\": \"Home page\", \"item\": \"https:\/\/n8ande-60.myshopify.com\/collections\/frontpage\"}, {\"@type\": \"ListItem\", \"position\": 3, \"name\": \"pH \u0026 ORP Probe 300cm BNC Cable – Aquarium \u0026 Hydroponics\", \"item\": \"https:\/\/n8ande-60.myshopify.com\/products\/ph-orp-replacement-probe-300cm-bnc-cable-aquarium-hydroponics\"}]}\u003c\/script\u003e","brand":"Axl","offers":[{"title":"China Mainland","offer_id":44139112693847,"sku":"200007763:201336100","price":138.21,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0676\/6008\/7383\/files\/S95dfaaff74b14c14854fcd05cfc08baeh_d09aa102-36e3-4634-b14f-50070297aa42.webp?v=1786465150","url":"https:\/\/axlcustomersupport.com\/products\/ph-orp-replacement-probe-300cm-bnc-cable-aquarium-hydroponics","provider":"Axl","version":"1.0","type":"link"}