--- product_id: 11931791 title: "Hach Total Hardness Test Kit, Model 5-B, Drop Count Titration, 145300 | Water Analysis Kit, 2 Reagents, Measuring Tube, Square Bottle, Measuring Scoop" price: "MX$1757" currency: MXN in_stock: true reviews_count: 8 url: https://www.desertcart.mx/products/11931791-hach-total-hardness-test-kit-model-5-b-drop-count store_origin: MX region: Mexico --- # Measures hardness 1-30 gpg Drop count titration for precise results Includes 100 tests with 2 reagents Hach Total Hardness Test Kit, Model 5-B, Drop Count Titration, 145300 | Water Analysis Kit, 2 Reagents, Measuring Tube, Square Bottle, Measuring Scoop **Price:** MX$1757 **Availability:** ✅ In Stock ## Summary > 💧 Get the facts, not the guesswork — test your water hardness like a pro! ## Quick Answers - **What is this?** Hach Total Hardness Test Kit, Model 5-B, Drop Count Titration, 145300 | Water Analysis Kit, 2 Reagents, Measuring Tube, Square Bottle, Measuring Scoop - **How much does it cost?** MX$1757 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.mx](https://www.desertcart.mx/products/11931791-hach-total-hardness-test-kit-model-5-b-drop-count) ## 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 - • **User-Friendly Design:** Clear instructions and easy-to-use components make field and lab testing straightforward and reliable. - • **Economical & Efficient:** Provides up to 100 tests per kit, delivering long-lasting value for professionals and DIYers alike. - • **Precision You Can Trust:** Accurately measures total hardness as CaCO₃ with a simple drop-count titration method. - • **Optimize Your Water System:** Pinpoint water softener performance and avoid costly guesswork with exact grains per gallon readings. - • **Professional Grade Reliability:** Trusted by water treatment, manufacturing, and food & beverage industries for consistent, repeatable results. ## Overview The Hach Total Hardness Test Kit Model 5-B uses a simple, precise drop count titration method to measure water hardness from 1 to 30 grains per gallon (gpg) as CaCO₃. Designed for both field and lab use, it includes two reagents, a measuring tube, bottle, and scoop, enabling approximately 100 accurate tests. Trusted by professionals across multiple industries, this kit delivers reliable, repeatable results that help optimize water softener performance and troubleshoot hard water issues with confidence. ## Description Hach Total Hardness Test Kit, Model 5-B, Drop Count Titration, 145300 | Water Analysis Kit, 2 Reagents, Measuring Tube, Square Bottle, Measuring Scoop: Air Tool Maintenance Kits: desertcart.com: Industrial & Scientific Review: This kit helped me prove my water softener wasn’t actually softening - I bought the Hach Model 5-B Total Hardness Test Kit because I was troubleshooting my water softener and needed real numbers — not guesswork. Test strips weren’t cutting it. I needed to know exactly what my grains per gallon were. My raw water tested at 7–8 drops (around 7–8 GPG), and after running multiple regen cycles and adjusting salt settings, I was still getting 7 drops on the “soft” side. That told me immediately something wasn’t right with my system — seals, piston, resin, something. Without this kit, I would’ve assumed the softener was working because it was cycling normally. The drop-count method is super simple: fill the tube, add drops until it turns blue, and count. That’s it. Clear, repeatable results every time. No vague color matching or guessing like cheap strips. And it’s consistent — I tested from multiple bibs and got matching numbers. If you’re serious about dialing in a water softener or diagnosing problems, this kit is worth every penny. It gives you facts, not feelings. Helped me narrow down my issue and saved me from replacing parts blindly. Highly recommend for homeowners who like to troubleshoot their own equipment instead of just throwing parts at it. Review: Accurate, Affordable, Easy To Use. - Exactly what I needed. Tests for the most common hardness in my area. It doesn't test for iron, but there's kits available for that. We have very hard water ( 29.2 gr. per gallon with 0.2 clear water iron) and use this to check my softener's efficiency. Checked the reserve capacity settings of my new softener by letting it run down to zero available gallons, doing the laundry, dishwasher,showers,etc. and then checking the hardness before it regenerated. Still less than 1 grain per gallon after all that. Helps to know if you need to set your softener to high efficiency or high capacity. Saves me a lot of wasted salt and water from having the wrong settings. This is far and away the handiest kit I've seen. More accurate than the test strip kits. Instructions are straightforward. I've used titration equipment previously in a lab setting and this is very basic by comparison. But it works admirably for it's price. Our local water department has sophisticated water testing facilities and this inexpensive kit is spot on with their results. It won't check to the tenth of a grain, but who really needs that in a homeowner setting. There's enough material to do more tests than I'll ever use. Seems I have a lot of friends now that need their water checked. ## 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 - Includes instructions in English on outside of box as well as an insert inside the box for Spanish, French and Portuguese. ## Technical Specifications | Specification | Value | |---------------|-------| | Customer Reviews | 4.6 out of 5 stars 2,046 Reviews | ## Images ![Hach Total Hardness Test Kit, Model 5-B, Drop Count Titration, 145300 | Water Analysis Kit, 2 Reagents, Measuring Tube, Square Bottle, Measuring Scoop - 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 ### ⭐⭐⭐⭐⭐ This kit helped me prove my water softener wasn’t actually softening *by M***4 on March 3, 2026* I bought the Hach Model 5-B Total Hardness Test Kit because I was troubleshooting my water softener and needed real numbers — not guesswork. Test strips weren’t cutting it. I needed to know exactly what my grains per gallon were. My raw water tested at 7–8 drops (around 7–8 GPG), and after running multiple regen cycles and adjusting salt settings, I was still getting 7 drops on the “soft” side. That told me immediately something wasn’t right with my system — seals, piston, resin, something. Without this kit, I would’ve assumed the softener was working because it was cycling normally. The drop-count method is super simple: fill the tube, add drops until it turns blue, and count. That’s it. Clear, repeatable results every time. No vague color matching or guessing like cheap strips. And it’s consistent — I tested from multiple bibs and got matching numbers. If you’re serious about dialing in a water softener or diagnosing problems, this kit is worth every penny. It gives you facts, not feelings. Helped me narrow down my issue and saved me from replacing parts blindly. Highly recommend for homeowners who like to troubleshoot their own equipment instead of just throwing parts at it. ### ⭐⭐⭐⭐⭐ Accurate, Affordable, Easy To Use. *by A***. on February 14, 2021* Exactly what I needed. Tests for the most common hardness in my area. It doesn't test for iron, but there's kits available for that. We have very hard water ( 29.2 gr. per gallon with 0.2 clear water iron) and use this to check my softener's efficiency. Checked the reserve capacity settings of my new softener by letting it run down to zero available gallons, doing the laundry, dishwasher,showers,etc. and then checking the hardness before it regenerated. Still less than 1 grain per gallon after all that. Helps to know if you need to set your softener to high efficiency or high capacity. Saves me a lot of wasted salt and water from having the wrong settings. This is far and away the handiest kit I've seen. More accurate than the test strip kits. Instructions are straightforward. I've used titration equipment previously in a lab setting and this is very basic by comparison. But it works admirably for it's price. Our local water department has sophisticated water testing facilities and this inexpensive kit is spot on with their results. It won't check to the tenth of a grain, but who really needs that in a homeowner setting. There's enough material to do more tests than I'll ever use. Seems I have a lot of friends now that need their water checked. ### ⭐⭐⭐⭐⭐ Buy it, well worth the money. *by J***T on February 12, 2015* Kit does exactly what it says it does. I recently replaced my water softener but needed a way to validate whether or not it was working. Some of the bigger chain home improvement stored do carry water testing kits, but those kits are generally about $10 and only have "one time use" test strips, typically only 1 water hardness test. The other tests are for Iron, Sulfates, etc...If you happen to find a Morton Salt pamphlet in one of those stores, they include for free one single use water hardness kit; I didn't want to take 10 free pamphlets just so I could have a supply of water hardness test kits - besides, those test strips don't graduate the hardness scale very well. This kit does it extremely well. For years, I've read and had plumbers tell me that the cold water supply to the kitchen sink is typically not softened water - designed that way for taste as hard water tastes better than softened water. So I got this kit after installing a new water softener, went to the kitchen cold water facet, performed a test, and the hardness tested at 21 grains. Our municipal water supply is advertised at 19.5 - 22 grains, so this was right on the money. Next I went to the bathroom and tested cold water from the shower. Zero (0) grains of hardness. This instantly proved my water softener was working properly and gave me important information to relay to the next owner of this house. The kit has the directions in 3 languages on the side of the box. If you can't follow the direction...let's just say a 10 year old could probably do it. The kit claims about 100 water tests so at $38, that comes out to about .40/test including the shipping costs. Forty cents vs $10.95 + tax for just one hardness test.... I've already done like 5 tests so do the math (wanted to test softener performance after 500 gallon intervals between regenerations). This is an easy 5 star product. ## 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.mx/products/11931791-hach-total-hardness-test-kit-model-5-b-drop-count](https://www.desertcart.mx/products/11931791-hach-total-hardness-test-kit-model-5-b-drop-count) --- *Product available on Desertcart Mexico* *Store origin: MX* *Last updated: 2026-08-22*