{"product_id":"hanna-instruments-hi-7021m-orp-test-solution-240mv-230-ml-bottle","title":"Hanna Instruments HI-7021M ORP test solution, 240mV, 230 mL bottle","description":"\u003cp\u003eTest the precision of an Oxide Reduction Potential (ORP) Electrode with Hanna Preparation and Pre-treatment Solutions.\u003c\/p\u003e\u003cp\u003eThe HI-7021M is an ORP Solution for Platinum and Gold Electrodes and reads 240 mV at 25°C.\u003c\/p\u003e \u003cp\u003eORP standard solutions allow you to test the precision of ORP electrodes. For example, by immersing the electrode in HI-7021 solution, you should read 240 mV at 25°C.\u003c\/p\u003e \u003cp\u003eThe standard solutions are perfect for immersing the electrode and establishing initial readings which should fall within the 200 to 275 mV range at 25 C\/77 F, for example, or within the parameters you are testing.\u003c\/p\u003e \u003cp\u003eIf the reading is outside the indicated range, clean and condition the ORP Electrode in Hanna pre-treatment solution. Use HI-7092 for oxidising or HI-7091 for reducing pre-treatment.\u003c\/p\u003e \u003cp\u003eEach bottle has a Lot number and expiry date clearly listed.\u003c\/p\u003e \u003cp\u003eAll bottles have an air tight, tamper-proof seal to maintain the quality of the solution.\u003c\/p\u003e \u003cp\u003e*A Certificate of Analysis is available on request.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eReducing and Oxidising pre-treatment Solutions\u003c\/strong\u003e\u003c\/p\u003e \u003cp\u003eHI-7091L Reducing pre-treatment solution 500ml\u003c\/p\u003e \u003cp\u003eHI-7091M Reducing pre-treatment Solution 230ml\u003c\/p\u003e \u003cp\u003eHI-7092L Oxidising pre-treatment solution 500ml\u003c\/p\u003e \u003cp\u003eHI-7092M Oxidising pre-treatment solution 230ml\u003c\/p\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":57640072282485,"sku":"HI-7021M","price":29.26,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0574\/5511\/6439\/files\/orp-240mv-test-solution_a7aa69b8-b911-411f-b96f-99a1859ff606.jpg?v=1791580498","url":"https:\/\/testallwater.co.uk\/products\/hanna-instruments-hi-7021m-orp-test-solution-240mv-230-ml-bottle","provider":"Test All Water","version":"1.0","type":"link"}