{"product_id":"total-hardness-test-kit-hi38033","title":"Total Hardness Test Kit - HI38033","description":"\u003cp\u003eThe HI38033 is a titration-based chemical test kit that determines the total hardness concentration within the 0 to 30 grains per gallon (gpg) range. The HI38033 is supplied with all of the necessary reagents and equipment to perform the analysis. The test kit contains enough reagents for perform approximately 100 tests. The hardness level as gpg calcium carbonate (CaCO\u003csub\u003e3\u003c\/sub\u003e) is determined by an EDTA (ethylene-diamine-tetraacetic acid) titration. The solution is first adjusted to a pH of 10 using a buffer solution. The indicator chelates with metal ions such as magnesium or calcium to form a red colored complex. As EDTA is added, metal ions complex with it. After all the free metal ions have been complexed, an excess EDTA removes the metal ions complexed with the indicator to form a blue colored solution. This color change from red to blue is the endpoint of the titration.\u003c\/p\u003e\n\u003ch2\u003eFeatures at-a-glance\u003c\/h2\u003e\n\u003cul\u003e\u003cli\u003e\n\u003cstrong\u003eComplete setup \u003c\/strong\u003e\u003cul\u003e\u003cli\u003eAll required materials are included with the test kit, such as the sample beaker, plastic pipette, and reagent bottles.\u003c\/li\u003e\u003c\/ul\u003e\n\u003c\/li\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003cli\u003e\n\u003cstrong\u003eHigh resolution\u003c\/strong\u003e\u003cul\u003e\u003cli\u003eReadings from 0 to 30 gpg are determined to 1 gpg resolution.\u003c\/li\u003e\u003c\/ul\u003e\n\u003c\/li\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003cli\u003e\n\u003cstrong\u003eReplacement reagents available\u003c\/strong\u003e\u003cul\u003e\u003cli\u003eThere is no need to buy a new kit when reagents are exhausted. The HI38033-100 reagent set can be ordered to replace the reagents supplied with the kit. This reagent set comes with 1 (30 mL) dropper bottle of buffer solution, 1 (10 mL) dropper bottle of Calmagite indicator, and 2 (75 mL) bottles of HI38033-0 EDTA solution.\u003c\/li\u003e\u003c\/ul\u003e\n\u003c\/li\u003e\u003c\/ul\u003e\n\u003ch2\u003eSignificance of Use\u003c\/h2\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. Thus, water hardness is actually a quantitative measure of these ions in the water. 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\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003eHI38033\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eName\u003c\/td\u003e\n\u003ctd\u003eTotal Hardness Test Kit - HI38033\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHardness, Total Measurement Type\u003c\/td\u003e\n\u003ctd\u003etitration\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHardness, Total Range\u003c\/td\u003e\n\u003ctd\u003e0 to 30 gpg CaCO₃\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHardness, Total Resolution\u003c\/td\u003e\n\u003ctd\u003e1 gpg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHardness, Total Method\u003c\/td\u003e\n\u003ctd\u003eEDTA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHardness, Total Number of Tests\u003c\/td\u003e\n\u003ctd\u003e100\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e457 g (16.1 oz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e235x175x115 mm (9.2x6.9x4.5 in.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eOrdering Info\u003c\/h3\u003e\u003cp\u003eHI38033 test kit comes with 30 mL buffer solution, 10 mL calmagite indicator, 75 mL EDTA solution (2), 20 mL plastic beaker with cap, and 1 mL plastic pipette.\u003c\/p\u003e\u003ch3\u003eManuals\u003c\/h3\u003e\u003cp\u003e\u003ca href=\"https:\/\/manuals.hannainst.com\/HI38033\" target=\"_blank\" rel=\"noopener\"\u003eTotal Hardness Test Kit - HI38033\u003c\/a\u003e\u003c\/p\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":67871254118769,"sku":"HI38033","price":2637.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1086\/9535\/5761\/files\/hi38033_1_1.jpg?v=1792645956","url":"https:\/\/hannainst.in\/products\/total-hardness-test-kit-hi38033","provider":"hanna","version":"1.0","type":"link"}