--- product_id: 11931791 title: "- Total Hardness Test Kit, Model 5-B, Water Analysis Kit for Drop Count Titration, with 2 Reagents, Measuring Tube, Square Bottle & Measuring Scoop, 145300" price: "287 zł" currency: PLN in_stock: true reviews_count: 8 url: https://www.desertcart.pl/products/11931791-total-hardness-test-kit-model-5-b-water-analysis-kit store_origin: PL region: Poland --- # Measures hardness 1-30 gpg Approx. 100 accurate tests Includes 2 precise reagents - Total Hardness Test Kit, Model 5-B, Water Analysis Kit for Drop Count Titration, with 2 Reagents, Measuring Tube, Square Bottle & Measuring Scoop, 145300 **Price:** 287 zł **Availability:** ✅ In Stock ## Summary > 💧 Know your water, own your wellness. ## Quick Answers - **What is this?** - Total Hardness Test Kit, Model 5-B, Water Analysis Kit for Drop Count Titration, with 2 Reagents, Measuring Tube, Square Bottle & Measuring Scoop, 145300 - **How much does it cost?** 287 zł with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/11931791-total-hardness-test-kit-model-5-b-water-analysis-kit) ## Best For - Customers looking for quality international products ## Why This Product - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Comprehensive Kit Components:** Includes reagents, measuring tube, square bottle, and scoop for a seamless testing experience. - • **Cost-Effective & Long-Lasting:** Run up to 100 tests per kit—ideal for ongoing monitoring without breaking the bank. - • **Instant Troubleshooting Power:** Diagnose water softener issues quickly and avoid costly repairs with clear, repeatable results. - • **Precision Drop-Count Titration:** Get exact CaCO3 hardness levels with a simple drop count method—no guesswork, just reliable data. - • **Professional-Grade Testing Kit:** Trusted by water treatment pros and industries for consistent, lab-quality results in the field. ## Overview The Hach Total Hardness Test Kit Model 5-B offers a professional, drop-count titration method to measure water hardness as CaCO3 within a 1-30 gpg range. Equipped with two reagents and all necessary tools, it delivers approximately 100 precise tests, making it the go-to solution for homeowners and professionals seeking accurate, repeatable water hardness analysis to optimize water softener performance and prevent costly maintenance. ## Description Product description Specifications Test Kits Single parameter kits offer simplicity when testing for a specific parameter in your home, in the field, or throughout the facility. Each Hach test kit comes with everything needed to begin testing. Hardness is a measure of the soap consuming capacity of water. The term comes from an expression of how difficult or "hard" it is to wash clothes with the water. When soap is mixed with hard water, these minerals combine with the soap and form a solid precipitate. This decreases the cleaning efficiency of the soap and forms soap scum. As more soap is added, solids continue to form until the minerals are depleted. When the minerals are no longer available, the soap forms a lather and works as a cleaning agent. The minerals that precipitate with soap are cations such as calcium, magnesium, iron, manganese, and zinc. The concentration of calcium and magnesium in natural waters generally far exceeds that of any other polyvalent cation. Therefore, hardness is generally considered to be the concentration of calcium and magnesium in water. Hardness can be classified as carbonate and non-carbonate hardness. Carbonate hardness refers to calcium and magnesium bicarbonate. Sometimes it is referred to as temporary hardness because it can be removed or lowered by boiling. When calcium bicarbonate is heated, solid calcium carbonate forms. This is the primary cause of scale formation in water heaters and boilers. Non-carbonate hardness is caused primarily by calcium and magnesium nitrates, chlorides, and sulfates. Noncarbonate hardness is sometimes referred to as permanent hardness. The amount of carbonate vs. non-carbonate hardness can be found by measuring alkalinity [link to the Alkalinity Parameter Page]. If the alkalinity is equal to or greater than the hardness, all of the hardness is carbonate. Any excess hardness is non-carbonate hardness. In the US hardness is typically reported in mg/L as CaCO3 or gpg (grain per gallon) as CaCO3. Because alkalinity is also reported as CaCO3, the results of the two tests can be compared directly. Total Hardness is the sum of all carbonate and non-carbonate calcium and magnesium salts present in the water. ## Features - Trust the original Hach test kit! Simple drop-count titration measures hardness as CaCO3 (1 gpg = 17.1 mg/L). Utilizes drop count titration with a range of 1-30 gpg. Contains approximately 100 tests. Drop count titration - a simple, economical titration method! - Includes two reagents, measuring tube, square bottle, and measuring scoop. - Field and lab water hardness testing made simple - Our water hardness test kits are trusted by professionals in water treatment, food and beverage, textile, manufacturing, and other industries. - Method Name: Drop count titration/EDTA-bulk powder. Parameter: Hardness, total - As CaCO₃. Platform: Drop Count Titration ## Technical Specifications | Specification | Value | |---------------|-------| | Customer Reviews | 4.6 out of 5 stars 2,029 Reviews | ## Images ![- Total Hardness Test Kit, Model 5-B, Water Analysis Kit for Drop Count Titration, with 2 Reagents, Measuring Tube, Square Bottle & Measuring Scoop, 145300 - Image 1](https://m.media-amazon.com/images/I/81yV7KboZvL.jpg) ## Questions & Answers **Q: Okay, what am I doing wrong. The water was blue, not pink when I added the microspoon of chemical, no drops added.** A: It means your water is soft already. If it was pink, then however many drops you add to turn it blue, thats how many grains hard your water is. Since you did not have to add any drops that means your water is 0 grains hard. **Q: What is the hardness range for this test kit? Thanks** A: You can always dilute your sample to extend the range. Dilute with soft water (distilled, clean rain water, or previously softened water). Just check that the soft water tests for zero hardness before using it. 1:1 dilution would double your range. 1:9 would extend the range by a factor of 10. A cheap drugstore syringe could be used for dilutions if you don't want to eyeball it. **Q: Does this kit come with the test tube and mixing bottle like the one from Hach?** A: Hach's part number 145300 does come with the measuring tube PN43800 and Glass Bottle PN 43900 **Q: Why would the color of soft water turn blue as soon as the indicator is added to the sample, without any additionof the titrant?** A: This happens normally, if the water is soft (zero grains of harness). The grains of hardness is the number of drops of titrant you have to add to get the water to turn blue. If you do not have to add any drops of titrant, then you have zero grains! ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by M***4 on March 3, 2026* ### ⭐⭐⭐⭐⭐ Review *by M***3 on March 7, 2017* ### ⭐⭐⭐⭐⭐ Review *by N***E on February 12, 2026* ## Frequently Bought Together - Hach Total Hardness Test Kit, Model 5-B, Water Analysis Kit for Drop Count Titration, with 2 Reagents, Measuring Tube, Square Bottle & Measuring Scoop, 145300 - HoneForest Water Quality Tester, Accurate and Reliable, TDS Meter, EC Meter & Temperature Meter 3 in 1, 0-9990ppm, Ideal Water Test Meter for Drinking Water, Aquariums, etc. --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.pl/products/11931791-total-hardness-test-kit-model-5-b-water-analysis-kit](https://www.desertcart.pl/products/11931791-total-hardness-test-kit-model-5-b-water-analysis-kit) --- *Product available on Desertcart Poland* *Store origin: PL* *Last updated: 2026-05-03*