--- product_id: 451922683 title: "Hanna Instruments Hanna Marine Magnesium Checker HC HI783 Saltwater Aquariums, Marine, Aquaculture Applications Magnesium Tester 64 grams" brand: "hanna instruments" price: "€ 182.32" currency: EUR in_stock: true category: "Hanna Instruments" url: https://www.desertcart.hr/products/451922683-hanna-instruments-hanna-marine-magnesium-checker-hc-hi783-saltwater-aquariums store_origin: HR region: Croatia --- # Fast digital readout Color-coded syringes Compact handheld design Hanna Instruments Hanna Marine Magnesium Checker HC HI783 Saltwater Aquariums, Marine, Aquaculture Applications Magnesium Tester 64 grams **Brand:** hanna instruments **Price:** € 182.32 **Availability:** ✅ In Stock ## Summary > ⚡ Measure Magnesium Like a Pro — Fast, Simple, Spot-On! ## Quick Answers - **What is this?** Hanna Instruments Hanna Marine Magnesium Checker HC HI783 Saltwater Aquariums, Marine, Aquaculture Applications Magnesium Tester 64 grams by hanna instruments - **How much does it cost?** € 182.32 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/451922683-hanna-instruments-hanna-marine-magnesium-checker-hc-hi783-saltwater-aquariums) ## 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 - • **Compact & Portable:** Handheld, lightweight design fits perfectly in your toolkit or lab bench. - • **Save Time & Stress:** Fewer steps than traditional chemical tests means more time enjoying your marine life. - • **Simplified Testing:** Color-coded syringes eliminate guesswork—test with confidence every time. - • **Effortless Precision:** Digital readout delivers quick, accurate magnesium levels in just minutes. - • **Marine-Grade Accuracy:** Specifically engineered for saltwater aquariums, marine, and aquaculture use. ## Overview The Hanna Marine Magnesium Checker HC HI783 is a handheld digital tester designed for precise, quick measurement of magnesium levels in saltwater environments. Featuring color-coded syringes and a user-friendly interface, it streamlines testing for marine aquariums and aquaculture, ensuring optimal conditions for coral and invertebrate health with minimal effort. ## Description Our Marine Magnesium Checker HC (HI783) is designed to accurately and quickly determine the magnesium level in marine (saltwater) samples. The digital readout makes measurements effortless. Our Magnesium Checker HC (HI783) is the first marine magnesium test of its kind! This Checker provides an uncomplicated, accurate, and budget-friendly way to measure magnesium in saltwater/marine environments. Color-coded syringes and straightforward testing steps ensure quick and easy measurements every time! Magnesium is vital in saltwater environments as it allows calcium and carbonate to be bioavailable for corals and invertebrates. Designed as a more accurate alternative to chemical test kits, our Marine Magnesium Checker HC (HI783) provides quick, accurate results in a few easy steps. Magnesium Checker Tips & Tricks for Accurate Measurements Measure liquids accurately by syringe by drawing up the plunger until the bottom seal of the plunger is at the desired volume mark. Do NOT raise the liquid to the mark as this will give a false high volume. An air gap between the plunger and liquid is normal. Always use clean, dry cuvettes and syringes/tips. Rinse with deionized (RODI) water only; never rinse with tank water. Dry the cuvettes before use to prevent dilution. Ensure the sample does not contain any debris. Whenever the cuvette is placed into the checker, it must be dry outside and free of fingerprints, oil and dirt. Wipe the cuvette thoroughly with HI731318 microfiber cleaning cloth or a lint-free cloth prior to insertion. Shaking the cuvette can generate bubbles, causing higher readings. To obtain accurate measurements, remove such bubbles by swirling or by gently tapping the cuvette. Do not let the reacted sample stand too long after reagent has been added, as accuracy will be affected. Discard the sample immediately after the readng has been taken or the glass might become permanently stained. Keep the tips with their appropriate syringes during measurement. ## Features - Fewer steps than other chemical tests - Color-coded syringes make the magnesium test simple and effortless - Dedicated to a single parameter - Small size, big convenience - Ideal for: Saltwater Aquariums, Marine, and Aquaculture Applications ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0B337ZK5N | | Brand Name | Hanna Instruments | | Customer Reviews | 4.3 4.3 out of 5 stars (252) | | Item Form | handheld | | Item Weight | 0.59 Kilograms | | Manufacturer | Hanna Marine Magnesium Checker® HC HI783 | | Number of Items | 1 | | Number of Packs | 1 | | Pet Type | Fish | | Target Species | Fish | | Unit Count | 1 Count | ## Product Details - **Brand:** Hanna Instruments - **Item form:** handheld - **Item weight:** 0.59 Kilograms - **Number of Packs:** 1 - **Unit count:** 1 Count ## Images ![Hanna Instruments Hanna Marine Magnesium Checker HC HI783 Saltwater Aquariums, Marine, Aquaculture Applications Magnesium Tester 64 grams - Image 1](https://m.media-amazon.com/images/I/41fpKPdLfKL.jpg) ## Frequently Bought Together - Hanna Instruments Hanna Marine Magnesium Checker HC HI783 Saltwater Aquariums, Marine, Aquaculture Applications Magnesium Tester 64 grams - Hanna Instruments High Range Nitrate Checker HI782 --- ## 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/451922683-hanna-instruments-hanna-marine-magnesium-checker-hc-hi783-saltwater-aquariums](https://www.desertcart.hr/products/451922683-hanna-instruments-hanna-marine-magnesium-checker-hc-hi783-saltwater-aquariums) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-10-09*