{"product_id":"hanna-instruments-hi-4001-40-ammonia-filling-solution","title":"Hanna Instruments HI-4001-40 Ammonia Filling Solution","description":"\u003cp\u003eHI-4001-40 is a set of 4 x 30 mL bottles of fill solution made specifically for Hanna’s ammonia gas sensing Ion Selective Electrodes (ISEs).\u003c\/p\u003e\u003cp\u003eThe electrolyte solution should be added to the outer probe body of the HI-4101 ISE before final assembly to ensure optimum performance.\u003c\/p\u003e \u003cp\u003eThe HI-4001-40 fill solution is a chloride ion-containing electrolyte that is required to provide a reference potential for the HI-4101 ammonia gas sensing Ion Selective Electrode (ISE). As ammonia 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 ammonia gas in the solution.\u003c\/p\u003e \u003ch3\u003eSafety Data Sheets\u003c\/h3\u003e \u003cp\u003eAccess safety data sheets online here. When using any form of chemical, it is important you download the relevant safety datasheet and make yourself aware of any precautions you should take when handling the chemical. You can access our library of safety datasheets and download a copy by following the link below.\u003c\/p\u003e \u003cp\u003ePlease note that the '-' in HI- products should be removed from all searches to find the correct information.\u003c\/p\u003e \u003cp\u003e\u003ca href=\"https:\/\/sds.hannainst.com\/v\/856999\" target=\"_blank\" rel=\"noreferrer noopener\"\u003eclick here\u003c\/a\u003e\u003c\/p\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":57640061501813,"sku":"HI-4001-40","price":155.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0574\/5511\/6439\/files\/ammonia-filling-solution.jpg?v=1791580110","url":"https:\/\/testallwater.co.uk\/products\/hanna-instruments-hi-4001-40-ammonia-filling-solution","provider":"Test All Water","version":"1.0","type":"link"}