{"product_id":"hanna-instruments-hi-4004-51-calcium-module-for-half-cell","title":"Hanna Instruments HI-4004-51 Calcium Module for Half Cell","description":"\u003cp\u003eThe HI-4004-51 is a replacement sensing module for the calcium half-cell Ion Selective Electrode.\u003c\/p\u003e\u003cp\u003eUsed with the HI-4004 calcium half-cell Ion Selective Electrode (ISE), the liquid membrane sensor contains an organic polymer within the PVC matrix which is responsible for exchange of calcium ions across the membrane.\u003c\/p\u003e \u003cp\u003eA charge imbalance develops between the sample and the internal cell in response to the calcium ion activity.\u003c\/p\u003e \u003cp\u003eThe HI-4004-51 calcium half-cell module easily fits onto the HI-4004 probe body, allowing for quick replacement.\u003c\/p\u003e \u003cp\u003ePre-soaking the calcium sensor in HI-4004-45 conditioning solution or a calcium standard (0.01M) without ionic strength adjuster (ISA) for a while before calibration will help to optimise the sensor response.\u003c\/p\u003e \u003cp\u003eRefrigeration of the HI-4004-51 calcium module will help extend its life.\u003c\/p\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":57640061862261,"sku":"HI-4004-51","price":299.54,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0574\/5511\/6439\/files\/calcium-module-for-half-cell.jpg?v=1791580127","url":"https:\/\/testallwater.co.uk\/products\/hanna-instruments-hi-4004-51-calcium-module-for-half-cell","provider":"Test All Water","version":"1.0","type":"link"}