{"product_id":"hanna-instruments-hi-72911b-industrial-use-ph-electrode","title":"Hanna Instruments HI-72911B Industrial Use pH Electrode","description":"\u003cp\u003eThe HI-72911B is a titanium body, polymer filled, double reference junction pH electrode with a BNC + phono connector. This flat tip sensing portion of this electrode is made with general purpose glass.\u003c\/p\u003e\u003cp\u003eThe HI-72911B has a PTFE type junction along with a built-in temperature sensor. This design consideration is ideal for measuring the pH in boilers and cooling towers. The HI-72911B is designed for use with Hanna’s HI-98191 pH meter.\u003c\/p\u003e \u003cul\u003e \u003cli\u003eUnbreakable Titanium Body\u003c\/li\u003e \u003cli\u003eBuilt-In Temperature Sensor for Automatic Temperature Compensation\u003c\/li\u003e \u003cli\u003eLarge Annular PTFE Junction with Increased Surface Area for the Reference Cell\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eGeneral Purpose Glass Formulation\u003c\/h3\u003e \u003cp\u003eThe measurement of pH at very high temperatures is detrimental to the sensitive glass bulb and will shorten the life of it. A pH electrode with general purpose (GP) glass will have a resistance of 100 megaohms at 25°C while the resistance of LT glass is around 50 megaohms at 25°C. As the temperature of the glass decreases in the sample, the resistance of the LT glass will approach that of GP glass. If using GP glass, the resistance would increase above the optimum range, resulting in increased impedance and ultimately affecting the measurement. The HI-72911B is suitable to use with samples that measure from 0 to 80°C.\u003c\/p\u003e \u003ch3\u003eFlat Tip Bulb\u003c\/h3\u003e \u003cp\u003eThe recessed flat tip bulb of the HI-72911B is easy to clean and prevents solids in solution from collecting on the sensor. Other tip shapes include conic for penetration and spheric for aqueous measurements.\u003c\/p\u003e \u003ch3\u003eTitanium Body\u003c\/h3\u003e \u003cp\u003eA titanium body increases immunity to electrostatic and magnetic fields. It also allows for strong corrosion resistance, even in seawater.\u003c\/p\u003e \u003ch3\u003ePTFE Junction\u003c\/h3\u003e \u003cp\u003ePorous polytetrafluoroethylene (PTFE) is a hydrophobic material that is available with different porosities. This type of junction is often used on electrodes with polymer electrolytes. Because of its chemical advantages, PTFE is widely used in industrial applications.\u003c\/p\u003e \u003ch3\u003eBNC + RCA Connector\u003c\/h3\u003e \u003cp\u003eThe HI-72911B uses a BNC + RCA connector. This type of connector is universal in that it can be used on Hanna pH meters that have a female BNC connector for pH and RCA input for temperature.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eBody Material\u003c\/td\u003e\n\u003ctd\u003etitanium\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReference\u003c\/td\u003e\n\u003ctd\u003edouble, Ag\/AgCl\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eJunction \/ Flow Rate\u003c\/td\u003e\n\u003ctd\u003ePTFE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eElectrolyte\u003c\/td\u003e\n\u003ctd\u003epolymer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRange\u003c\/td\u003e\n\u003ctd\u003epH: 0 to 12\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Pressure\u003c\/td\u003e\n\u003ctd\u003e3.0 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTip Shape\u003c\/td\u003e\n\u003ctd\u003eflat\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDiameter\u003c\/td\u003e\n\u003ctd\u003e14 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBody Length \/ Overall Length\u003c\/td\u003e\n\u003ctd\u003e110 mm \/ 150.5 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRecommended Operating Temperature\u003c\/td\u003e\n\u003ctd\u003e0 to 80°C (32 to 176°F) - GP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature Sensor\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMatching Pin\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAmplifier\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDigital\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCable\u003c\/td\u003e\n\u003ctd\u003e7 pole; 1 m (3.3’)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConnection\u003c\/td\u003e\n\u003ctd\u003eBNC + phono\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplications\u003c\/td\u003e\n\u003ctd\u003eBoilers, cooling towers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e6 months\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":57640079917429,"sku":"HI-72911B","price":221.25,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0574\/5511\/6439\/files\/industrial-use-ph-electrode.jpg?v=1791580755","url":"https:\/\/testallwater.co.uk\/products\/hanna-instruments-hi-72911b-industrial-use-ph-electrode","provider":"Test All Water","version":"1.0","type":"link"}