{"product_id":"pool-link-500-series-fac-probe-gel","title":"Pool Link 500 Series, FAC Probe Gel","description":"\u003cp data-path-to-node=\"0\" class=\"first-token\"\u003e\u003cspan class=\"\"\u003eThe \u003c\/span\u003e\u003cb data-path-to-node=\"0\" data-index-in-node=\"4\"\u003ePool Link 500 Series FAC Probe Gel\u003c\/b\u003e\u003cspan\u003e (Pool Link \/ Link Automation) is a specialized,\u003c\/span\u003e\u003cspan\u003e pre-buffered electrochemical electrolyte gel formulated specifically for the internal reservoir of the Pool Link 500 Series Amperometric Free Available Chlorine (FAC) 0–20 PPM probe.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-path-to-node=\"1\"\u003e\u003cspan\u003eHeld in place behind the probe's microporous membrane cap,\u003c\/span\u003e\u003cspan\u003e the electrolyte provides an ion-conductive pathway between the internal silver\/silver chloride (\u003c\/span\u003e\u003cspan class=\"math-inline\" data-math=\"\\text{Ag\/AgCl}\" data-index-in-node=\"155\"\u003e$\\text{Ag\/AgCl}$\u003c\/span\u003e\u003cspan\u003e) reference anode and the noble metal (gold or platinum) working cathode.\u003c\/span\u003e\u003cspan\u003e It maintains a constant internal chemical environment to facilitate the electrochemical reduction of hypochlorous acid (\u003c\/span\u003e\u003cspan class=\"math-inline\" data-math=\"\\text{HOCl}\" data-index-in-node=\"363\"\u003e$\\text{HOCl}$\u003c\/span\u003e\u003cspan\u003e) into chloride ions,\u003c\/span\u003e\u003cspan\u003e producing the measurable micro-current proportional to chlorine concentration.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 data-path-to-node=\"3\"\u003eChemical Formulation \u0026amp; Functional Characteristics\u003c\/h3\u003e\n\u003cp data-path-to-node=\"4\"\u003e\u003cspan\u003eEngineered to maintain stable baseline polarization and linear current response in continuous commercial aquatic operation:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul data-path-to-node=\"5\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"5,0,0\"\u003e\u003cb data-path-to-node=\"5,0,0\" data-index-in-node=\"0\"\u003eHigh-Purity Buffered Matrix:\u003c\/b\u003e\u003cspan\u003e Formulated with a stabilized potassium chloride (\u003c\/span\u003e\u003cspan class=\"math-inline\" data-math=\"KCl\" data-index-in-node=\"78\"\u003e$KCl$\u003c\/span\u003e\u003cspan\u003e) or sodium chloride base buffered to a precise internal pH to maintain steady ionic strength and reference potential.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"5,1,0\"\u003e\u003cb data-path-to-node=\"5,1,0\" data-index-in-node=\"0\"\u003eGelled High-Viscosity Rheology:\u003c\/b\u003e\u003cspan\u003e Formulated with high-grade,\u003c\/span\u003e\u003cspan\u003e non-reactive cellulosic or synthetic polymer thickening agents.\u003c\/span\u003e\u003cspan\u003e The gelled consistency prevents rapid electrolyte weeping or boundary layer drying behind the microporous membrane under line pressure variations (up to 50 PSI).\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"5,2,0\"\u003e\u003cb data-path-to-node=\"5,2,0\" data-index-in-node=\"0\"\u003eAnti-Evaporative \u0026amp; Thermal Stabilizers:\u003c\/b\u003e\u003cspan\u003e Contains conditioning agents to maintain electrolyte fluidity and prevent crystal dropout or desiccation across standard operating pool temperatures (35°F to 120°F \/ 2°C to 49°C).\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"5,3,0\"\u003e\u003cb data-path-to-node=\"5,3,0\" data-index-in-node=\"0\"\u003eAir-Release Optimization:\u003c\/b\u003e\u003cspan\u003e Formulated with surface tension characteristics that allow trapped micro-air bubbles to rise and escape easily during cap filling,\u003c\/span\u003e\u003cspan\u003e preventing bubble entrapment against the cathode face.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-path-to-node=\"7\"\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul data-path-to-node=\"8\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"8,0,0\"\u003e\u003cb data-path-to-node=\"8,0,0\" data-index-in-node=\"0\"\u003eCompatible Sensor:\u003c\/b\u003e\u003cspan\u003e Pool Link 500 Series Amperometric Free Available Chlorine (FAC) Probe (0–20 PPM).\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"8,1,0\"\u003e\u003cb data-path-to-node=\"8,1,0\" data-index-in-node=\"0\"\u003eElectrochemical Compatibility:\u003c\/b\u003e\u003cspan\u003e Formulated specifically for \u003c\/span\u003e\u003cspan class=\"math-inline\" data-math=\"\\text{Au-Ag\/AgCl}\" data-index-in-node=\"59\"\u003e$\\text{Au-Ag\/AgCl}$\u003c\/span\u003e\u003cspan\u003e or \u003c\/span\u003e\u003cspan class=\"math-inline\" data-math=\"\\text{Pt-Ag\/AgCl}\" data-index-in-node=\"80\"\u003e$\\text{Pt-Ag\/AgCl}$\u003c\/span\u003e\u003cspan\u003e amperometric cell pairs.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"8,2,0\"\u003e\u003cb data-path-to-node=\"8,2,0\" data-index-in-node=\"0\"\u003epH Buffering Range:\u003c\/b\u003e\u003cspan\u003e Stabilized neutral\/mildly acidic internal buffer system to optimize the reduction potential of diffused \u003c\/span\u003e\u003cspan class=\"math-inline\" data-math=\"\\text{HOCl}\" data-index-in-node=\"124\"\u003e$\\text{HOCl}$\u003c\/span\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"8,3,0\"\u003e\u003cb data-path-to-node=\"8,3,0\" data-index-in-node=\"0\"\u003eOperating Temperature Limits:\u003c\/b\u003e\u003cspan\u003e 35°F to 120°F (2°C to 49°C).\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"8,4,0\"\u003e\u003cb data-path-to-node=\"8,4,0\" data-index-in-node=\"0\"\u003eShelf Life:\u003c\/b\u003e\u003cspan\u003e \u003c\/span\u003e\u003cb data-path-to-node=\"8,4,0\" data-index-in-node=\"12\"\u003e2 years\u003c\/b\u003e\u003cspan\u003e when stored sealed in original dropper bottles at room temperature (50°F to 80°F \/ 10°C to 27°C) protected from direct sunlight.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"8,5,0\"\u003e\u003cb data-path-to-node=\"8,5,0\" data-index-in-node=\"0\"\u003eStandard Container Volume:\u003c\/b\u003e\u003cspan\u003e Typically supplied in \u003c\/span\u003e\u003cb data-path-to-node=\"8,5,0\" data-index-in-node=\"49\"\u003e30 mL to 60 mL\u003c\/b\u003e\u003cspan\u003e (approx.\u003c\/span\u003e\u003cspan\u003e 1 to 2 fl.\u003c\/span\u003e\u003cspan\u003e oz.\u003c\/span\u003e\u003cspan\u003e) squeeze dropper bottles fitted with a precision needle-tip nozzle for clean membrane filling.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"8,6,0\"\u003e\u003cb data-path-to-node=\"8,6,0\" data-index-in-node=\"0\"\u003eRefill Yield:\u003c\/b\u003e\u003cspan\u003e One 30 mL bottle delivers approximately \u003c\/span\u003e\u003cb data-path-to-node=\"8,6,0\" data-index-in-node=\"54\"\u003e10 to 15 complete membrane cap recharges\u003c\/b\u003e\u003cspan\u003e (typical fill volume is 1.\u003c\/span\u003e\u003cspan class=\"\"\u003e5 mL to 2.\u003c\/span\u003e\u003cspan class=\"\"\u003e5 mL per service).\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-path-to-node=\"10\" class=\"\"\u003eCap Refilling \u0026amp; Re-Commissioning Procedure\u003c\/h3\u003e\n\u003cdiv class=\"attachment-container unknown md-has-block-component\"\u003e\n\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003csequence class=\"lm-enabled ng-star-inserted\"\u003e\u003cdiv role=\"list\" class=\"sequence-container\" jslog=\"308913;track:impression,attention\" data-hveid=\"0\" decode-data-ved=\"1\" data-ved=\"0CAAQse0SahgKEwjHxM7M582XAxUAAAAAHQAAAAAQjwc\"\u003e\n\u003cdiv role=\"listitem\" class=\"sequence-event ng-star-inserted\"\u003e\u003cdiv class=\"sequence-event-content\"\u003e\u003cdiv class=\"sequence-event-description gds-body-l\"\u003e\n\u003cspan only-show-to-message-actions=\"\" data-test-id=\"sequence-export-header\" class=\"only-show-to-message-actions\"\u003e\u003cstrong\u003e\u003c!----\u003e\u003c!----\u003e1.\u003c!----\u003e\u003c!----\u003eIsolate Bypass Flow and Remove Probe:\u003c!----\u003e\u003c\/strong\u003ePrerequisite.\u003c!----\u003e\u003c!----\u003e\u003c\/span\u003e\u003cstructured-node-sequence _nghost-ng-c1241692568=\"\" class=\"ng-star-inserted\"\u003e\u003cstructured-text _ngcontent-ng-c1241692568=\"\" class=\"ng-star-inserted\"\u003e\u003c!----\u003e\u003c!----\u003e\u003cp class=\"ng-star-inserted\"\u003eClose the inlet and outlet isolation valves on the 500 Series acrylic flow cell to relieve hydraulic pressure. Unthread the probe's compression collar and extract the sensor body from the manifold.\u003c\/p\u003e\n\u003cp class=\"ng-star-inserted\"\u003e\u003ci\u003eVerification:\u003c\/i\u003e Flow cell pressure gauge drops to 0 PSI and no bypass water flows from the open port.\u003c\/p\u003e\n\u003c!----\u003e\u003c!----\u003e\u003c\/structured-text\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c\/structured-node-sequence\u003e\u003c!----\u003e\n\u003c\/div\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003cdiv role=\"listitem\" class=\"sequence-event ng-star-inserted\"\u003e\u003cdiv class=\"sequence-event-content\"\u003e\u003cdiv class=\"sequence-event-description gds-body-l\"\u003e\n\u003cspan only-show-to-message-actions=\"\" data-test-id=\"sequence-export-header\" class=\"only-show-to-message-actions\"\u003e\u003cstrong\u003e\u003c!----\u003e\u003c!----\u003e2.\u003c!----\u003e\u003c!----\u003eFlush Depleted Electrolyte and Clean Electrode:\u003c!----\u003e\u003c\/strong\u003e2 min.\u003c!----\u003e\u003c!----\u003e\u003c\/span\u003e\u003cstructured-node-sequence _nghost-ng-c1241692568=\"\" class=\"ng-star-inserted\"\u003e\u003cstructured-text _ngcontent-ng-c1241692568=\"\" class=\"ng-star-inserted\"\u003e\u003c!----\u003e\u003c!----\u003e\u003cp class=\"ng-star-inserted\"\u003eUnscrew the lower membrane cap and discard old electrolyte into a sink or waste container. Rinse the internal cathode tip and cap reservoir thoroughly with distilled or deionized water, then gently blot dry with a lint-free tissue.\u003c\/p\u003e\n\u003cp class=\"ng-star-inserted\"\u003e\u003ci\u003eVerification:\u003c\/i\u003e The internal chamber is clean and the cathode surface is free of mineral buildup or discolored gel residue.\u003c\/p\u003e\n\u003c!----\u003e\u003c!----\u003e\u003c\/structured-text\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c\/structured-node-sequence\u003e\u003c!----\u003e\n\u003c\/div\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003cdiv role=\"listitem\" class=\"sequence-event ng-star-inserted\"\u003e\u003cdiv class=\"sequence-event-content\"\u003e\u003cdiv class=\"sequence-event-description gds-body-l\"\u003e\n\u003cspan only-show-to-message-actions=\"\" data-test-id=\"sequence-export-header\" class=\"only-show-to-message-actions\"\u003e\u003cstrong\u003e\u003c!----\u003e\u003c!----\u003e3.\u003c!----\u003e\u003c!----\u003eFill Membrane Cap with Fresh Gel:\u003c!----\u003e\u003c\/strong\u003e3 min.\u003c!----\u003e\u003c!----\u003e\u003c\/span\u003e\u003cstructured-node-sequence _nghost-ng-c1241692568=\"\" class=\"ng-star-inserted\"\u003e\u003cstructured-text _ngcontent-ng-c1241692568=\"\" class=\"ng-star-inserted\"\u003e\u003c!----\u003e\u003c!----\u003e\u003cp class=\"ng-star-inserted\"\u003eInvert the FAC Probe Gel bottle and tap it gently to dislodge air bubbles from the dispensing nozzle. Carefully fill the membrane cap approximately \u003cb\u003e3\/4 full\u003c\/b\u003e with fresh gel, avoiding micro-bubble entrapment.\u003c\/p\u003e\n\u003cp class=\"ng-star-inserted\"\u003e\u003ci\u003eVerification:\u003c\/i\u003e The gel inside the cap is clear, continuous, and free of visible air pockets.\u003c\/p\u003e\n\u003c!----\u003e\u003c!----\u003e\u003c\/structured-text\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c\/structured-node-sequence\u003e\u003c!----\u003e\n\u003c\/div\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003cdiv role=\"listitem\" class=\"sequence-event ng-star-inserted\"\u003e\u003cdiv class=\"sequence-event-content\"\u003e\u003cdiv class=\"sequence-event-description gds-body-l\"\u003e\n\u003cspan only-show-to-message-actions=\"\" data-test-id=\"sequence-export-header\" class=\"only-show-to-message-actions\"\u003e\u003cstrong\u003e\u003c!----\u003e\u003c!----\u003e4.\u003c!----\u003e\u003c!----\u003eThread Cap and Vent Hydrostatic Pressure:\u003c!----\u003e\u003c\/strong\u003e2 min.\u003c!----\u003e\u003c!----\u003e\u003c\/span\u003e\u003cstructured-node-sequence _nghost-ng-c1241692568=\"\" class=\"ng-star-inserted\"\u003e\u003cstructured-text _ngcontent-ng-c1241692568=\"\" class=\"ng-star-inserted\"\u003e\u003c!----\u003e\u003c!----\u003e\u003cp class=\"ng-star-inserted\"\u003eHolding the probe vertically, slowly screw the filled membrane cap onto the probe shaft. Allow excess gel to escape through the pressure-relief threads\/vent without forcing or stretching the delicate membrane face.\u003c\/p\u003e\n\u003cp class=\"ng-star-inserted\"\u003e\u003ci\u003eVerification:\u003c\/i\u003e The cap is firmly seated against its stop and the outer membrane remains smooth and flat.\u003c\/p\u003e\n\u003c!----\u003e\u003c!----\u003e\u003c\/structured-text\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c\/structured-node-sequence\u003e\u003c!----\u003e\n\u003c\/div\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003cdiv role=\"listitem\" class=\"sequence-event ng-star-inserted\"\u003e\u003cdiv class=\"sequence-event-content\"\u003e\u003cdiv class=\"sequence-event-description gds-body-l\"\u003e\n\u003cspan only-show-to-message-actions=\"\" data-test-id=\"sequence-export-header\" class=\"only-show-to-message-actions\"\u003e\u003cstrong\u003e\u003c!----\u003e\u003c!----\u003e5.\u003c!----\u003e\u003c!----\u003eReinstall in Flow Cell and Polarize:\u003c!----\u003e\u003c\/strong\u003e1–2 hours.\u003c!----\u003e\u003c!----\u003e\u003c\/span\u003e\u003cstructured-node-sequence _nghost-ng-c1241692568=\"\" class=\"ng-star-inserted\"\u003e\u003cstructured-text _ngcontent-ng-c1241692568=\"\" class=\"ng-star-inserted\"\u003e\u003c!----\u003e\u003c!----\u003e\u003cp class=\"ng-star-inserted\"\u003eReinstall the probe in the acrylic flow cell, tighten the compression collar, and reopen the bypass valves. Restore steady water flow (0.5 to 1.5 GPM) and let the sensor polarize under power for 1 to 2 hours before running span calibration.\u003c\/p\u003e\n\u003cp class=\"ng-star-inserted\"\u003e\u003ci\u003eVerification:\u003c\/i\u003e The FAC reading on the Pool Link 501 controller settles into a stable, non-drifting baseline matching a DPD photometer test.\u003c\/p\u003e\u003c\/structured-text\u003e\u003c\/structured-node-sequence\u003e\n\u003c\/div\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/sequence\u003e\n\u003c\/div\u003e","brand":"Commercial Pool and Spa Supplies","offers":[{"title":"Default Title","offer_id":67968942506095,"sku":"LINK-FACGEL","price":445.0,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0678\/3785\/3807\/files\/mermade-filter-500-series-automatic-chemical-feed-controller-by-pool-link-474-474_d4279122-6b2c-41b3-b454-449be02908c2.jpg?v=1792681416","url":"https:\/\/commercialpoolandspasupplies.com\/products\/pool-link-500-series-fac-probe-gel","provider":"Commercial Pool and Spa Supplies ","version":"1.0","type":"link"}