--- product_id: 476248255 title: "HI774-25 Phosphate Ultra Low Range Checker HC Reagents (2 Set - 50 Tests)" brand: "hanna instruments" price: "€ 205.43" currency: EUR in_stock: true reviews_count: 5 category: "Hanna Instruments" url: https://www.desertcart.hr/products/476248255-hi774-25-phosphate-ultra-low-range-checker-hc-reagents-2 store_origin: HR region: Croatia --- # Ultra low range detection 0.00-0.90 ppm Fast & accurate phosphate readings Pre-measured high purity reagents HI774-25 Phosphate Ultra Low Range Checker HC Reagents (2 Set - 50 Tests) **Brand:** hanna instruments **Price:** € 205.43 **Availability:** ✅ In Stock ## Summary > ⚡ Stay ahead of water quality with ultra-precise phosphate checks! ## Quick Answers - **What is this?** HI774-25 Phosphate Ultra Low Range Checker HC Reagents (2 Set - 50 Tests) by hanna instruments - **How much does it cost?** € 205.43 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/476248255-hi774-25-phosphate-ultra-low-range-checker-hc-reagents-2) ## Best For - hanna instruments enthusiasts ## Why This Product - Trusted hanna instruments brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Trusted by the Pros:** Backed by Hanna Instruments’ 4.7-star rating and industry-leading reliability. - • **Plug & Play Convenience:** Ready-to-use packets eliminate guesswork and speed up your testing process. - • **Precision in Every Drop:** Pre-measured reagents ensure consistent, lab-grade accuracy every test. - • **Tailored for Professionals:** Designed specifically for aquariums, aquaculture, and environmental water quality experts. - • **Ultra Low Range Sensitivity:** Detect phosphate levels as low as 0.00 ppm up to 0.90 ppm—perfect for critical water quality monitoring. ## Overview The Hanna Instruments HI774-25 reagent set offers pre-measured, ultra low range phosphate testing (0.00-0.90 ppm) with fast, accurate results using the Ascorbic Acid Method. Ideal for aquariums, aquaculture, and environmental monitoring, these reagents simplify testing while delivering lab-grade precision trusted by professionals worldwide. ## Description The HI774-25 are high-quality reagents that are pre-measured, allowing for users to achieve fast and accurate measurements with their Phosphate Ultra Low Range Checker HC. These reagents follow the Ascorbic Acid Method in which the reaction between phosphorus and reagents causes a blue tint in the sample. By simply adding the packet of HI774-25 reagent to the sample, the reaction will take place and the HI774 will determine the concentration from the color that is produced. The results will be displayed in ppb of phosphorus. These reagents are designed to be used with samples that have an expected range of 0.00 to 0.90 ppm phosphate. Easier to use and more accurate than chemical test kits; Dedicated to a single parameter; Small size, big convenience; Ideal for: Aquariums, Environmental, Aquaculture, Water Quality. Review: This is where Hannah makes their millions. Mr and Mrs. HANNAH know that without their regeants, the little eggs are useless. But they do a good job giv8ng accurate test results. Review: Alkalinity is very important in your saltwater aquarium and I absolutely love this product. ## Features - Causes serious eye damage. - Causes severe skin burns and eye damage. - Contains POTASSIUM ANTIMONYL TARTRATE. May produce an allergic reaction. - Corrosive to the respiratory tract. - Toxic if inhaled. - Pre-made reagents for ease of use - Prepared with high purity chemicals - HI774 Ultra Low Range Phosphate Checker will be essentially the same specifications as the HI736 Ultra Low Range Phosphorus Checker however it will not require a conversion but read directly in parts per million phosphates compared to parts per billion phosphorus. - Ideal for: Aquariums, Environmental, Aquaculture, Water Quality ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B09CHH2649 | | Best Sellers Rank | 176,045 in Pet Supplies ( See Top 100 in Pet Supplies ) 388 in Aquarium Test Kits | | Brand | Hanna Instruments | | Customer Reviews | 4.7 4.7 out of 5 stars (150) | | Item Weight | 0.05 Kilograms | | Manufacturer | Hanna Instruments | ## Product Details - **Brand:** Hanna Instruments - **Item weight:** 0.05 Kilograms - **Manufacturer:** Hanna Instruments ## Images ![HI774-25 Phosphate Ultra Low Range Checker HC Reagents (2 Set - 50 Tests) - Image 1](https://m.media-amazon.com/images/I/61npaGUwCZL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by L***R on 15 August 2025* This is where Hannah makes their millions. Mr and Mrs. HANNAH know that without their regeants, the little eggs are useless. But they do a good job giv8ng accurate test results. ### ⭐⭐⭐⭐⭐ Review *by J***6 on 31 May 2025* Alkalinity is very important in your saltwater aquarium and I absolutely love this product. ### ⭐⭐⭐⭐⭐ Review *by T***A on 19 March 2025* Great Easy to use ## Frequently Bought Together - HI774-25 Hanna Instruments Phosphate Ultra Low Range Checker HC Reagents (2 Set - 50 Tests) - Hanna Instruments HI782-25 Marine Nitrate High Range Checker Reagents (25 Tests) - WLR Industries Hanna HI772-26 REAGENTS - 2 Pack - for HI772 checker Saltwater Aquarium Alkalinity Colorimeter Checker Tester - 50 Test Pack --- ## 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.hr/products/476248255-hi774-25-phosphate-ultra-low-range-checker-hc-reagents-2](https://www.desertcart.hr/products/476248255-hi774-25-phosphate-ultra-low-range-checker-hc-reagents-2) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-05-20*