{"id":1582110085,"title":"HANNA HI 3840 CTK - Hardness Low Range Test Kit","handle":"hi3840","description":"\u003cdiv id=\"Product-Body\"\u003e\n\u003cp\u003eWater hardness has traditionally been defined as the capacity of water to precipitate soap. The ionic species in the water causing the precipitation was later found to be primarily calcium and magnesium. In the present. therefore. water hardness is actually a quantitative measure of these ions in the water sample. It is also now known that certain other ion species. such as iron. zinc and manganese. contribute to the overall water hardness. The measure and subsequent control of water hardness is essential to prevent scaling and clogging in water pipes.\u003c\/p\u003e\n\u003cp\u003eThe HI 3840 test kit determines total hardness in water via a titrimetric method.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOrder Information:\u003c\/strong\u003e\u003cbr\u003eHI 3840 test kit comes with 30 mL hardness LR reagent and 50 mL calibrated vessel.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"TabbedPanels1\" class=\"TabbedPanels\"\u003e\n\u003cdiv class=\"TabbedPanelsContentGroup\"\u003e\n\u003cdiv class=\"TabbedPanelsContent TabbedPanelsContentVisible\"\u003e\n\u003ctable class=\"spec_table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMethod\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003eTitration\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRange\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e0-150 mg\/L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSmallest Increment\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e5 mg\/L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChemical Method\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003eEDTA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Tests\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003eapprox 50\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e120 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","published_at":"2026-06-25T16:28:36+12:00","created_at":"2015-09-01T15:08:57+12:00","vendor":"Hanna Instruments","type":"Electrochemical","tags":["Manufacturer_Hanna Instruments","Type_Chemical Test Kits"],"price":1520,"price_min":1520,"price_max":1520,"available":true,"price_varies":false,"compare_at_price":null,"compare_at_price_min":0,"compare_at_price_max":0,"compare_at_price_varies":false,"variants":[{"id":4857186693,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":"HI3840","requires_shipping":false,"taxable":true,"featured_image":null,"available":true,"name":"HANNA HI 3840 CTK - Hardness Low Range Test Kit","public_title":null,"options":["Default Title"],"price":1520,"weight":0,"compare_at_price":null,"inventory_quantity":1,"inventory_management":null,"inventory_policy":"deny","barcode":null,"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}}],"images":["\/\/acornsci.co.nz\/cdn\/shop\/products\/31gluhj8kul__sl500_aa300_51e068e166014_2015_05485791-3277-4223-930c-195b650a52d7.jpeg?v=1465536733"],"featured_image":"\/\/acornsci.co.nz\/cdn\/shop\/products\/31gluhj8kul__sl500_aa300_51e068e166014_2015_05485791-3277-4223-930c-195b650a52d7.jpeg?v=1465536733","options":["Title"],"media":[{"alt":"HI 3840 CTK - Hardness Low Range Test Kit - Acorn Scientific","id":21281210467,"position":1,"preview_image":{"aspect_ratio":1.0,"height":800,"width":800,"src":"\/\/acornsci.co.nz\/cdn\/shop\/products\/31gluhj8kul__sl500_aa300_51e068e166014_2015_05485791-3277-4223-930c-195b650a52d7.jpeg?v=1465536733"},"aspect_ratio":1.0,"height":800,"media_type":"image","src":"\/\/acornsci.co.nz\/cdn\/shop\/products\/31gluhj8kul__sl500_aa300_51e068e166014_2015_05485791-3277-4223-930c-195b650a52d7.jpeg?v=1465536733","width":800}],"requires_selling_plan":false,"selling_plan_groups":[],"content":"\u003cdiv id=\"Product-Body\"\u003e\n\u003cp\u003eWater hardness has traditionally been defined as the capacity of water to precipitate soap. The ionic species in the water causing the precipitation was later found to be primarily calcium and magnesium. In the present. therefore. water hardness is actually a quantitative measure of these ions in the water sample. It is also now known that certain other ion species. such as iron. zinc and manganese. contribute to the overall water hardness. The measure and subsequent control of water hardness is essential to prevent scaling and clogging in water pipes.\u003c\/p\u003e\n\u003cp\u003eThe HI 3840 test kit determines total hardness in water via a titrimetric method.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOrder Information:\u003c\/strong\u003e\u003cbr\u003eHI 3840 test kit comes with 30 mL hardness LR reagent and 50 mL calibrated vessel.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"TabbedPanels1\" class=\"TabbedPanels\"\u003e\n\u003cdiv class=\"TabbedPanelsContentGroup\"\u003e\n\u003cdiv class=\"TabbedPanelsContent TabbedPanelsContentVisible\"\u003e\n\u003ctable class=\"spec_table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMethod\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003eTitration\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRange\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e0-150 mg\/L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSmallest Increment\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e5 mg\/L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChemical Method\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003eEDTA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Tests\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003eapprox 50\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e120 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e"}