{"product_id":"hanna-instruments-hi-4005-40-carbon-dioxide-filling-solution","title":"Hanna Instruments HI-4005-40 Carbon Dioxide Filling Solution","description":"\u003cp\u003eHI-4005-40 is a set of 4 x 30 mL bottles of chloride ion-containing fill solution made specifically for Hanna’s carbon dioxide gas sensing Ion Selective Electrodes (ISEs).\u003c\/p\u003e\u003cp\u003eThe electrolyte solution should be added to the outer probe body of the HI-4105 ISE before final assembly to ensure optimum performance.\u003c\/p\u003e \u003cp\u003e\u003ci\u003eThe way it works\u003c\/i\u003e - As carbon dioxide diffuses through the gas permeable membrane, the thin film of electrolyte on the surface of the pH sensing glass undergoes a pH change. The change in pH of the filling solution is proportional to the concentration of carbon dioxide gas in the solution.\u003c\/p\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":57640061993333,"sku":"HI-4005-40","price":137.66,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0574\/5511\/6439\/files\/carbon-dioxide-filling-solution.jpg?v=1791580133","url":"https:\/\/testallwater.co.uk\/products\/hanna-instruments-hi-4005-40-carbon-dioxide-filling-solution","provider":"Test All Water","version":"1.0","type":"link"}