--- product_id: 271343783 title: "Hach 145300 Total Hardness Test Kit, Model 5-b" brand: "hach" price: "£76.17" currency: GBP in_stock: true url: https://www.desertcart.co.uk/products/271343783-hach-145300-total-hardness-test-kit-model-5-b store_origin: GB region: United Kingdom --- # Precise drop-count method Measures total hardness in grains per gallon Quick diagnostics for water softeners Hach 145300 Total Hardness Test Kit, Model 5-b **Brand:** hach **Price:** £76.17 **Availability:** ✅ In Stock ## Summary > 💧 Know your water, own your home’s health! ## Quick Answers - **What is this?** Hach 145300 Total Hardness Test Kit, Model 5-b by hach - **How much does it cost?** £76.17 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/271343783-hach-145300-total-hardness-test-kit-model-5-b) ## Best For - hach enthusiasts ## Why This Product - Trusted hach brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Save on Soap & Energy:** Control hardness to reduce soap usage and prevent scale buildup in appliances. - • **Simple Drop-Count Testing:** No guesswork—just add drops until color changes for clear, repeatable results. - • **Optimize Your Water Softener:** Diagnose inefficiencies early and avoid costly repairs with real data. - • **Trusted by Homeowners & Pros:** Highly rated, easy-to-use kit for anyone serious about water quality. - • **Accurate Hardness Measurement:** Pinpoint your water’s calcium & magnesium levels with lab-grade precision. ## Overview The Hach 145300 Total Hardness Test Kit uses a precise drop-count titration method to measure total water hardness caused by calcium and magnesium ions. Designed for quick, reliable testing, it helps homeowners and professionals diagnose water softener performance and prevent costly damage from hard water. Compact and easy to use, this kit delivers lab-quality results without the guesswork of test strips. ## Description Water hardness is caused almost entirely by calcium and magnesium ions. Other di- and trizalent metals have a similar effect, but usually are not present in high enough concentration in potable waters to cause problems. Hardness increases soap consumption in laundries and causes scale in boilers. Hardness test kits include the inexpensive Models 5-B and 5-EP designed for those needing quick checks on the efficiency of water softeners. More sophisticated test kits allow the determination of total hardness as well as calcium and magnesium (by difference). ## Features - Water hardness is caused almost entirely by calcium and magnesium ions - Hardness increases soap consumption - Hardness test kits include the inexpensive Models 5-B and 5-EP ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B008FM7WLU | | ASIN | B008FM7WLU | | Batteries Included? | No | | Batteries Required? | No | | Customer Reviews | 4.6 4.6 out of 5 stars (1,881) | | Customer reviews | 4.6 4.6 out of 5 stars (1,881) | | Date First Available | 15 February 2015 | | Date First Available | 15 February 2015 | | Included components | Lab | | Is Discontinued By Manufacturer | No | | Item Package Quantity | 1 | | Item Weight | 254 g | | Item model number | 145300 | | Item model number | 145300 | | Manufacturer | HACH COMPANY | | Manufacturer | HACH COMPANY | | Package Dimensions | 12.7 x 6.91 x 6.6 cm; 254.01 g | | Package Dimensions | 12.7 x 6.91 x 6.6 cm; 254.01 g | | Part number | 145300 | ## Images ![Hach 145300 Total Hardness Test Kit, Model 5-b - 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! ## 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.co.uk/products/271343783-hach-145300-total-hardness-test-kit-model-5-b](https://www.desertcart.co.uk/products/271343783-hach-145300-total-hardness-test-kit-model-5-b) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-05-22*