{"product_id":"hach-total-hardness-test-kit-model-5-b-drop-count-titration-145300","title":"Total Water Hardness Test Kit with Drop-Count Titration, 1–30 GPG Range and Approximately 100 Tests – Hach 5-B","description":"\u003cp\u003eA total water hardness test kit uses drop-count titration to measure hardness as calcium carbonate in field or laboratory samples. Hach Model 5-B offers a straightforward single-parameter method for water treatment, food and beverage, textile, manufacturing and facility work, helping users quantify mineral content rather than estimate it from soap performance or visible scale.\u003c\/p\u003e\u003cp\u003eThe kit measures from 1 to 30 grains per gallon in one-GPG increments, with one grain per gallon equal to 17.1mg\/L as CaCO3. Supplies support approximately 100 tests and include two reagents, a measuring tube, square bottle, scoop and multilingual instructions. Collect a representative sample, follow the specified reagent sequence and count drops until the endpoint color appears. Record the result using the kit conversion, prevent reagent cross-contamination and observe all handling and disposal directions supplied with the chemicals.\u003c\/p\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eProduct: Total hardness test kit\u003c\/li\u003e\n\u003cli\u003eBrand: Hach\u003c\/li\u003e\n\u003cli\u003eModel: 5-B\u003c\/li\u003e\n\u003cli\u003ePart number: 145300\u003c\/li\u003e\n\u003cli\u003eMethod: Drop-count titration\u003c\/li\u003e\n\u003cli\u003eParameter: Total hardness as CaCO3\u003c\/li\u003e\n\u003cli\u003eRange: 1 to 30 GPG\u003c\/li\u003e\n\u003cli\u003eIncrement: 1 GPG\u003c\/li\u003e\n\u003cli\u003eApproximate tests: 100\u003c\/li\u003e\n\u003cli\u003eIncluded: Reagents, tube, bottle, scoop and instructions\u003c\/li\u003e\n\u003c\/ul\u003e\u003csection class=\"product-faq\"\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdiv class=\"qa\"\u003e\n\u003ch3\u003eWhat range does the Hach 5-B kit measure?\u003c\/h3\u003e\n\u003cp\u003eIt measures total hardness from 1 to 30 grains per gallon as calcium carbonate.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"qa\"\u003e\n\u003ch3\u003eHow many tests can the kit perform?\u003c\/h3\u003e\n\u003cp\u003eThe supplied reagents support approximately 100 tests.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"qa\"\u003e\n\u003ch3\u003eWhat does one grain per gallon equal?\u003c\/h3\u003e\n\u003cp\u003eOne GPG is equivalent to 17.1mg\/L as calcium carbonate.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"My Store","offers":[{"title":"Default","offer_id":45515454120051,"sku":"B008FM7WLU","price":75.55,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0703\/2012\/8115\/files\/81yV7KboZvL._SL1500.jpg?v=1789696104","url":"https:\/\/truegoodsmall.com\/products\/hach-total-hardness-test-kit-model-5-b-drop-count-titration-145300","provider":"True Goods Mall","version":"1.0","type":"link"}