{"product_id":"portable-galvanic-dissolved-oxygen-meter","title":"Portable Polarographic Dissolved Oxygen Meter","description":"\u003cp\u003eThe meter is a rugged, portable, waterproof dissolved oxygen (DO) meter designed to provide reliable measurements under harsh environmental conditions. The meter features manual calibration and an auto-off function. The unit is supplied complete with polarographic probe, PTFE membrane caps, electrolyte fill solution, protective shield, and rugged carrying case.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eEasily Replaceable Membrane Caps\u003c\/li\u003e\n\u003cli\u003eOne or Two Point Calibration\u003c\/li\u003e\n\u003cli\u003eWaterproof\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003ePolarographic Measuring System\u003c\/strong\u003e\u003cspan\u003e - The meter and probe use polarographic sensor technology based on the Ross and Clark polarographic measurement method. The probe is comprised of a platinum cathode and silver anode in an electrolyte solution held in place over the surfaces of the electrodes by a polymer membrane. An external voltage applied across the system establishes a current proportional to the concentration of dissolved oxygen.\u003c\/span\u003e\u003c\/p\u003e","brand":"Aquatic Equipment \u0026 Design Inc.","offers":[{"title":"HI9142: Polarographic Portable Dissolved Oxygen Meter","offer_id":56203021615270,"sku":null,"price":690.0,"currency_code":"USD","in_stock":true},{"title":"HI76407\/4F: Polarographic DO Probe with Protective Sleeve w\/ 4m cable","offer_id":56203021648038,"sku":null,"price":300.0,"currency_code":"USD","in_stock":true},{"title":"HI76407A\/P: Replacement DO Screw Cap Membranes","offer_id":56203021680806,"sku":null,"price":105.0,"currency_code":"USD","in_stock":true},{"title":"HI7041S: Polarographic DO Electrolyte Solution (30 mL)","offer_id":56203021713574,"sku":null,"price":25.0,"currency_code":"USD","in_stock":true},{"title":"HI7040L: Zero Oxygen Solution Set (500 mL)","offer_id":56203021746342,"sku":null,"price":25.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0731\/6344\/0294\/files\/PolargraphicDOmeter.png?v=1771363075","url":"https:\/\/gridfreesupply.com\/products\/portable-galvanic-dissolved-oxygen-meter","provider":"Grid Free Supply","version":"1.0","type":"link"}