{"product_id":"lead-sulfate-combination-ion-selective-electrode-ise-hi4112","title":"Lead\/Sulfate Combination Ion-Selective Electrode (ISE) - HI4112","description":"\u003cp\u003eHanna’s solid-state combination ISEs are designed with a cone style junction. The skirted cone geometry of the sensor forms the liquid junction with the test solution at the tip of the junction cone, producing a highly stable reference potential and consistent flow rates of electrolyte into the solution. A simple press of the top portion of the ISE makes it easy to empty the electrolyte fill solution and replace when necessary.\u003c\/p\u003e\n\u003cp\u003eFor the HI4112 to measure lead accurately, it is important that the ionic strength of the standards and sample be adjusted to a high and constant value with the lead ionic strength adjuster (ISA) solution. The ISA ensures that the activity coefficient is constant so the concentration of free lead ions can be measured. Measuring all solutions with a constant ionic strength reduces the margin of error between measurements. The HI4112 lead\/sulfate solid state ISE can measure from 1µM (0.21 mg\/L) to 0.1M (20, 700 mg\/L).\u003c\/p\u003e\n\u003cp\u003eThe HI4112 can also be used as an indicator to follow the progress and detect the endpoint of a precipitation titration of sulfate. During the titration, the lead\/sulfate ISE follows the lead concentration while a lead perchlorate solution is used to titrate the sample. The lead in the titrant solution reacts with the sulfate ions present in the sample to form a precipitate. Once all of the lead and sulfate ions have reacted, a change in mV occurs to signal the endpoint, and ultimately the sulfate concentration.\u003c\/p\u003e\n\u003ch4\u003eConversion Table for Pb\u003csup\u003e2+\u003c\/sup\u003e\n\u003c\/h4\u003e\n\u003cdiv style=\"overflow-x: auto; margin: 0 0 32px;\"\u003e\u003ctable\u003e\n\u003ccolgroup\u003e \u003ccol width=\"210\"\u003e \u003ccol width=\"*\"\u003e\n\u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eMultiply\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003emoles\/L (M) to ppm (mg\/L)\u003c\/td\u003e\n\u003ctd\u003e2.072 x 10\u003csup\u003e5\u003c\/sup\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eppm (mg\/L) to M (moles\/L)\u003c\/td\u003e\n\u003ctd\u003e4.826 x 10\u003csup\u003e-6\u003c\/sup\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003ch2\u003eFeatures at-a-glance\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eFixed Sensing Modules\u003c\/strong\u003e - Combination solid state ISEs are electrodes that detect free ions in a solution. The highly insoluble, compressed sensing pellet is attached to the electrode by a fixed sensing module for ease of use.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDurable PEI Body\u003c\/strong\u003e - The probe body is composed of durable polyetherimide (PEI) plastic.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBNC Connection\u003c\/strong\u003e - The HI4112 has a universal BNC connector for easy connection to any benchtop meter with a female BNC probe input.\u003c\/p\u003e\n\u003ch2\u003eTheory of Operation\u003c\/h2\u003e\n\u003cp\u003eA solid state sensor electrode develops a voltage due to the ion exchange that occurs between the solution and the inorganic membrane. An equilibrium occurs due to the highly limited solubility of the membrane material in the sample. When the ionic strength of the solution is fixed by the addition of ISA, the voltage is proportional to the concentration of free ions in solution.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003eHI4112\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eName\u003c\/td\u003e\n\u003ctd\u003eLead\/Sulfate Combination Ion-Selective Electrode (ISE) - HI4112\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDescription\u003c\/td\u003e\n\u003ctd\u003ecombination\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMeasurement Range\u003c\/td\u003e\n\u003ctd\u003elead (Pb\u003csup\u003e2+\u003c\/sup\u003e) 0.1M to 1 10\u003csup\u003e-6\u003c\/sup\u003eM, 20,700 to 0.21 mg\/L (ppm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature Range\u003c\/td\u003e\n\u003ctd\u003e0 to 80 °C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBody Material\u003c\/td\u003e\n\u003ctd\u003ePEI\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptimum pH Range\u003c\/td\u003e\n\u003ctd\u003epH 4 to 7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBody Length\/Overall Length\u003c\/td\u003e\n\u003ctd\u003e120 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter Diameter\u003c\/td\u003e\n\u003ctd\u003e12 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCable\u003c\/td\u003e\n\u003ctd\u003ecoaxial; 1 m (3.3’)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConnector Type\u003c\/td\u003e\n\u003ctd\u003eBNC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNotes\u003c\/td\u003e\n\u003ctd\u003eApproximate Slope +27 mV\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eManuals\u003c\/h3\u003e\u003cp\u003e\u003ca href=\"https:\/\/manuals.hannainst.com\/HI4112\" target=\"_blank\" rel=\"noopener\"\u003eLead\/Sulfate Combination Ion-Selective Electrode (ISE) - HI4112\u003c\/a\u003e\u003c\/p\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":67871278137713,"sku":"HI4112","price":150950.25,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1086\/9535\/5761\/files\/hi4112_2016.jpg?v=1792646033","url":"https:\/\/hannainst.in\/products\/lead-sulfate-combination-ion-selective-electrode-ise-hi4112","provider":"hanna","version":"1.0","type":"link"}